Josely Koury - Academia.edu (original) (raw)

Papers by Josely Koury

Research paper thumbnail of Bioelectrical impedance vector analysis and body composition in cervical spinal cord injury: A pilot study

Frontiers in Nutrition

IntroductionBody composition assessment in cervical spinal cord injury (c-SCI) individuals is imp... more IntroductionBody composition assessment in cervical spinal cord injury (c-SCI) individuals is important to monitor the fat free-mass (FFM) loss, due to immobilization, or gain, due to exercise practice. Single frequency bioelectrical impedance analysis (SF-BIA) is low in cost, simple and easy.ObjectivesThe aims of this study are: to evaluate the concordance between the FFM values obtained using dual X-ray absorptiometry (DXA) and the three SF-BIA previous predictive equations; and to test the applicability of the bioelectrical impedance vector analysis (BIVA).MethodsTwenty-three c-SCI males were divided into two groups: Physically active (PA; n = 13; at least 150 min/week) and non-active individuals (NPA) and were assessed by DXA and SF-BIA simultaneously.ResultsFFM values were similar between groups PA and NPA. Considering all participants, FFM values obtained by Kocina and Heyward (>11%) and Sun (<15.4%) predictive equations were different when compared to DXA (p < 0.01)....

Research paper thumbnail of Fat-Free Mass Using Bioelectrical Impedance Analysis as an Alternative to Dual-Energy X-Ray Absorptiometry in Calculating Energy Availability in Female Adolescent Athletes

International Journal of Sport Nutrition and Exercise Metabolism

Energy availability (EA) is calculated by subtracting exercise energy expenditure from energy int... more Energy availability (EA) is calculated by subtracting exercise energy expenditure from energy intake, adjusted for fat-free mass (FFM) obtained using accurate methods, such as dual-energy X-ray absorptiometry (DXA). Unlike DXA, the bioelectrical impedance analysis (BIA) is low in cost, simple and easy to carry out. This study aimed to test the concordance between the calculation of EA using FFM values from four BIA predictive equations and FFM obtained using DXA in female adolescent athletes (n = 94), recruited via social media. Paired Student’s t test, Wilcoxon test, Lin’s concordance correlation coefficient, root mean square error, limits of agreement, and mean absolute percentage error were used to evaluate agreement between the FFM values obtained by the four SF-BIA predictive equations and DXA. Regression linear analysis was used to determine the relation between FFM values obtained using DXA and the BIA predictive equations. Standardized residuals of the FFM and EA were calcul...

Research paper thumbnail of Physical exercise practice influences serum concentrations of 25(OH)D and PTH in spinal cord injured men

Research paper thumbnail of Influence of bone age and allelic variants of the vitamin D receptor (VDR) gene on bone mass indices in adolescent boys

Research paper thumbnail of Vitamin D is directly associated with favorable glycemic, lipid, and inflammatory profiles in individuals with at least one component of metabolic syndrome irrespective of total adiposity: Pró-Saúde Study, Brazil

Nutrition Research, 2021

Vitamin D insufficiency has been suggested as a risk factor for several metabolic disorders. The ... more Vitamin D insufficiency has been suggested as a risk factor for several metabolic disorders. The objective of the study was to investigate the association between serum 25 hydroxyvitamin D [25(OH)D] and metabolic health markers of Brazilian individuals with normal-weight, overweight or obesity. We hypothesized that serum 25(OH)D would be inversely associated with glycemic, lipid and inflammatory markers indicative of metabolic abnormality. Data of 511 individuals (33-79 years), recruited from a longitudinal investigation (Pró-Saúde Study), were analyzed cross-sectionally. Anthropometric, biochemical, body composition, socio-demographic and lifestyle data were collected. Based on body mass index (BMI; normal weight, overweight, obesity) and metabolic health (metabolically healthy (MH) and metabolically unhealthy (MU)) categories, the participants were classified into 6 phenotypes. Individuals having zero components of the metabolic syndrome were considered as "MH". MH obesity was frequent in 2.0% of the participants and 56.0% exhibited vitamin D insufficiency (<20 ng/mL). In the subgroups of the same BMI category, there were no significant differences in 25(OH)D concentrations between individuals classified as MH and MU. After adjustments (including %body fat and BMI), an inverse association was observed between 25(OH)D and visceral adipose tissue (B = -6.46, 95% confidence interval, CI: -12.87, -0.04), leptin (B = -0.09, 95% confidence interval, CI: -0.14, -0.03), insulin (B = -0.21, 95%CI: -0.34, -0.07), HOMA-IR (B = -0.06, 95%CI: -0.10, -0.02), triglycerides (B = -2.44, 95%CI: -3.66, -1.22), and TNF-α (B = -0.12, 95%CI: -0.24, -0.005) only in MU individuals. Our results indicate that the association of 25(OH)D concentrations with a favorable biochemical profile (glycemic, lipidic and inflammatory) seems to depend on the individual's overall metabolic health, suggesting more benefits from higher serum vitamin D in MU individuals, regardless of their adiposity.

Research paper thumbnail of Assessment of trends of nutritional status, central obesity, and growth profile using anthropometric measurements in adolescent athletes from a sport-oriented public school

The Journal of Sports Medicine and Physical Fitness, 2019

BACKGROUND The aims were to evaluate the nutritional status, central adiposity, and physical grow... more BACKGROUND The aims were to evaluate the nutritional status, central adiposity, and physical growth profile of adolescents in a sports-oriented public school (SOPS) and to describe the results considering the Brazilian and American adolescents' survey studies. METHODS This study was a dynamic cohort, performed in 2012-2013 and 2015. 1,082 adolescent athletes (11-16 years old) participated. Anthropometric data (height [H], weight, and waist circumference [WC]) were collected yearly. The nutritional status was assessed using BMI z-score; trunk fat, using WC and WC/H ratio; and growth, using height z-score. The SOPS results were described considering data from the Brazilian Household Budget Survey (HBS-Southeast region) and the National Health and Nutrition Examination Survey (NHANES). Anthropometric data was compared using linear mixed effects regression models, considering sex, age group and time. RESULTS Considering height z-score and BMI z-score values, none of the adolescents in the SOPS had short stature or underweight, and the obesity prevalence was approximately 1% throughout the study. HBS survey revealed 3.4% of obesity prevalence in adolescents (11-16 years old). Considering age and time, significant differences in WC for both sexes were observed. However, considering NHANES data, our participants were classified in P5-25. CONCLUSIONS These results suggest that the nutritional status of adolescents in the SOPS was good, obesity prevalence was 1% and WC measurement was within P5-25 considering NHANES data. This supports the public policies encouraging involvement in sports at school, which should be one of the priorities in the health promotion agenda, reducing the development of future chronic diseases.

Research paper thumbnail of Leptin Gene Polymorphism, Plasma Leptin Levels And Aerobic Capacity In Response To Intense Exercise

Medicine & Science in Sports & Exercise, 2019

PURPOSE: The aim of the present study was to determine the association between single nucleotide ... more PURPOSE: The aim of the present study was to determine the association between single nucleotide polymorphisms (SNPs) in the leptin (LEP) and leptin receptor (LEPR) genes, and body composition, plasma leptin levels, and aerobic capacity in response to 48 h of intense exercise. METHODS: Male Brazilian Army cadets (n=163; 21.6±0.4 years) were genotyped for the LEP 19G>A (rs2167270) and -2548G>A (rs7799039), and LEPR 668A>G (rs1137101) polymorphisms. Anthropometric, hormonal and aerobic capacity parameters were measured 48 h after intense military exercise. RESULTS: Sixty-seven percent of participants were classified as having superior aerobic conditioning (VO2max=55.2±0.2 mL∙kg-1∙min-1), and had lower plasma leptin levels (36%, P=0.008) than subjects classified as having excellent aerobic conditioning. Considering all subjects VO2max correlated negatively with fat mass (r=-0.212; P=0.007), whereas plasma leptin level correlated positively with body fat (r=0.642, P=0.005) and fat mass (r=0.723, P=0.001), and negatively with VO2max (r=-0.223, P=0.005). Only individuals homozygous for the wildtype homozygote for LEP -2548G>A SNP had higher plasma leptin values (59%), body fat (85%), and fat mass (82%) (P<0.05) compared to those with a GA genotype. LEP -2548G>A SNP was a positive predictor for plasma leptin levels (B=0.217, P=0.02), after adjusting for fat mass, and therefore, genotype effects may affect leptin levels. CONCLUSIONS: Polymorphism in the leptin promoter gene may influence plasma leptin levels, but not aerobic capacity, in response to intense physical exercise. Additional studies are needed to show the precise contribution of the SNPs on aerobic capacity. Financial support FAPERJ.

Research paper thumbnail of Smoking status affects bioimpedance-derived phase angle in men but not in women: The Pró-Saúde Study, Brazil

Nutrition, 2019

This is a PDF file of an unedited manuscript that has been accepted for publication. As a service... more This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Highlights  Current male smokers have lower phase angle (PhA) values than never smokers.  PhA in current male smokers may result from cell damage due to unhealthy lifestyle.  Inflammation caused by smoking may be an additional contribution to lower PhA.  PhA values are not different between female smoking categories.

Research paper thumbnail of Fat-free mass in adolescent athletes: Accuracy of bioimpedance equations and identification of new predictive equations

Nutrition, 2019

This is a PDF file of an unedited manuscript that has been accepted for publication. As a service... more This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Highlights 1-This study showed that, besides chronological age, biological maturity is also important; 2-The effect of biological maturity on bioelectrical values was observed; 3-Selected BIA equations, from literature, were not adequate for analyzing body composition in Brazilian adolescent athletes; 4-New BIA equations were proposed, considering age and skeletal maturity for both sexes, and menarche status for females; 5-BIVA showed higher phase angle for mature adolescents.

Research paper thumbnail of Açai (Euterpe oleracea Mart.) seed flour prevents obesity-induced hepatic steatosis regulating lipid metabolism by increasing cholesterol excretion in high-fat diet-fed mice

Food research international (Ottawa, Ont.), 2018

Açai (Euterpe oleracea Mart.) seed flour prevents obesity-induced hepatic steatosis regulating li... more Açai (Euterpe oleracea Mart.) seed flour prevents obesity-induced hepatic steatosis regulating lipid metabolism by increasing cholesterol excretion in high-fat diet-fed mice

Research paper thumbnail of Bioimpedance parameters in adolescent athletes in relation to bone maturity and biochemical zinc indices

Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS), 2018

Phase angle (PA) is derived from resistance and reactance determined by bioimpedance analysis (BI... more Phase angle (PA) is derived from resistance and reactance determined by bioimpedance analysis (BIA) and it appears to relate to cellular stability and integrity. Interpretation of PA values could be complemented by bioelectrical impedance vector analysis (BIVA), which relates to body hydration and structure. Body composition, age, sex, and nutrients are known to stabilize cell membranes, such as zinc, have been related to PA although information is scarce in adolescent athletes. The aim of the present study was to assess the association of body composition, skeletal maturity and zinc biochemical indices with phase angle and bioelectrical impedance parameters, in forty male adolescent soccer athletes (13.4±0.6years). BIA was performed with a single-frequency tetrapolar analyzer. PA and BIVA were determined using resistance and reactance BIA data. Plasma and erythrocyte zinc concentrations were measured using inductively coupled plasma-optical emission spectrometry. Body composition w...

Research paper thumbnail of Zinc and Copper Biochemical Indices of Antioxidant Status in Elite Athletes of Different Modalities

International Journal of Sport Nutrition and Exercise Metabolism, 2004

The purpose of this study was lo compare zinc and copper biochemical indices of antioxidant statu... more The purpose of this study was lo compare zinc and copper biochemical indices of antioxidant status and their relationship in elite athletes of different modalities: aerobic with high-impact (triathletes, n = 10 and long-distance runners, n = 12), anaerobic with high-impact (short-distance runners, n = 9), and anaerobic with low-impact (short-distance swimmers, n = 13). The influence of recent dietary intake and body composition was also evaluated. A venous blood sample was drawn 16-20 hr after competition for the following measurements: packed-cell volume and hemoglobin in blood; copper and zinc in plasma and erythrocytes; ceruloplasmin in plasma; superoxide dismutase activity and metal-lothionein in erythrocyles; and erythrocyte osmotic fragility. Zinc and copper intakes were not different in the athlete groups and did not affect the biochemical indices measured. Athletes of the long-distance high-impact aerobic modalities had higher indices of antioxidant protection (erythrocyte z...

Research paper thumbnail of Associação entre a bioimpedância elétrica e a prova de função respiratória em homens com câncer de pulmão do tipo não pequenas células

Research paper thumbnail of O Consumo De Resveratrol Por Jogadores De Basquete Reduz a Concentração De Albumina, Ácido Úrico e Ferro Plasmáticos

Research paper thumbnail of Distribuição De Gordura Corporal e Capacidade Antioxidante Em Atletas Femininas

Research paper thumbnail of Aerobic Conditioning Might Protect Against Liver and Muscle Injury Caused by Short-Term Military Training

Journal of strength and conditioning research / National Strength & Conditioning Association, 2016

Koury, JC, Daleprane, JB, Pitaluga-Filho, MV, de Oliveira, CF, Gonçalves, MC, and Passos, MCF. Ae... more Koury, JC, Daleprane, JB, Pitaluga-Filho, MV, de Oliveira, CF, Gonçalves, MC, and Passos, MCF. Aerobic conditioning might protect against liver and muscle injury caused by short-term military training. J Strength Cond Res 30(2): 454-460, 2016-This study aimed to compare the biochemical markers of muscle and liver injury and total antioxidant capacity in army cadets after a traditional army physical training program and to correlate these effects with aerobic conditioning. Male army cadets (n = 87; age, 20 ± 2 years) were evaluated 12 hours before the start of training (T0), 12 hours after a 30-km march (T1), and 48 hours after military training (T2). Creatine kinase (CK), aspartate aminotransferase (AST), and alanine aminotransferase (ALT) serum levels were measured using an autoanalyzer. Total antioxidant capacity was determined by 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity (Sc%). Seventy-four percent of army cadets were classified as having excellent aerobic conditi...

Research paper thumbnail of Effects of proanthocyanidin on oxidative stress biomarkers and adipokines in army cadets: a placebo-controlled, double-blind study

European journal of nutrition, Jan 24, 2015

The relatively recent advent of polyphenol supplement for exercise studies has been tested in a v... more The relatively recent advent of polyphenol supplement for exercise studies has been tested in a variety of forms and doses. However, the dose-response on adipokines and oxidative stress biomarker effect remains unknown. The aim of the present study was to assess the effect of intense, long-duration (48-h) exercise, and a single dose of proanthocyanidin, on plasma leptin, adiponectin, and electronegative low-density lipoprotein (LDL(-)) concentrations. Fifty-four healthy male army cadets (22 ± 2 years) participated in a double-blind, randomized, placebo-controlled study and were distributed between control (CG; n = 27) and supplemented groups (SG; n = 27). Immediately before the start of the exercise, both CG and SG groups received a capsule containing starch (200 mg) or proanthocyanidin (dry Vitis vinifera extract, 200 mg), respectively. Following a 12-h fasting period, the plasma adiponectin, leptin, and LDL(-) concentrations were measured prior to the start of the exercise after 2...

Research paper thumbnail of Is it possible to identify underlying cardiovascular risk in young trained military?

The Journal of sports medicine and physical fitness, Jan 4, 2014

Exercise is an important tool used in the prevention of cardiovascular risk. Contradictorily, eli... more Exercise is an important tool used in the prevention of cardiovascular risk. Contradictorily, elite athletes and military have been found to have at high cardiovascular risk. This study aimed to identify underlying cardiovascular risk in young trained military using different parameters including the leptin:adiponectin (L:A) ratio. Healthy military males (n=54) participated in this study. Anthropometric and body composition were measured; after overnight fast were determined: plasma lipid profile, electronegative-LDL (LDL (-)), leptin and adiponectin concentrations. Data were expressed as median [25th and 75th percentiles]. The relationship between variables was tested using the Spearman correlation, with p<0.05 considered significant. Total cholesterol (143[130-157 mg/dL]), triglycerides (TG 88.5[63-116 mg/dL]) and LDL-c (77.6[68.8-94.5 mg/dL]) plasma levels were adequate. However, all participants were found to have HDL-c below 60 mg/dL (43[40-49 mg/dL]) and 44% (n=24) had a TG...

Research paper thumbnail of Phase Angle and Bioelectrical Impedance Vectors in Adolescent and Adult Male Athletes

International Journal of Sports Physiology and Performance, 2014

The aim of the current study was to assess phase angle (PA) and bioelectrical impedance vectors (... more The aim of the current study was to assess phase angle (PA) and bioelectrical impedance vectors (BIVA) in adolescent (n = 105, 12–19 y) and adult (n = 90, 20–50 y) male athletes practicing varied sports modalities. Bioelectrical impedance analysis (BIA) was performed with a single-frequency tetrapolar impedance analyzer after the athletes had fasted overnight for 8 h. PA and BIVA were determined from BIA data. PA presented correlations (P < .01) with body-mass index (r = .58) in all athletes and also with age in adolescent (r = .63) and adult (r = –.27) athletes. Compared with adults, adolescent athletes presented lower PA and higher frequency of PA below the 5th percentile of a reference population (P < .001). The adolescents with low PA were mostly football and basketball players. The BIVA confidence ellipses of adult and adolescent athletes were different (P < .001) between them and from their respective reference populations and were closer than those of adult and adole...

Research paper thumbnail of Effect of the Period of Resting in Elite Judo Athletes: Hematological Indices and Copper/ Zinc-Dependent Antioxidant Capacity

Biological Trace Element Research, 2005

The purpose of this study was to evaluate the effect of the resting period on hematological and c... more The purpose of this study was to evaluate the effect of the resting period on hematological and copper-zinc-dependent antioxidant indices in Brazilian elite judo athletes (n = 7). Venous blood samples were collected after 24-h and 5-d periods of resting following a competition, with an interval of 30 d between collections. Two months prior to and during the study, each athlete received an individualized adequate diet. Body composition was determined at both study periods. The following were analyzed: in whole blood, hemoglobin, hematocrit, red cell count, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration, red cell distribution width, and white cell count; in plasma, zinc, copper, iron, ceruloplasmin, and total iron-binding capacity; in erythrocytes, metallothionein, copper/zinc superoxide dismutase, and osmotic fragility. Dietary intake and body composition did not affect the biochemical measurements. A significant reduction in ceruloplasmin and superoxide dismutase activity was found after 5 d compared to 24 h of resting. A significant correlation between erythrocyte metallothionein and red cell distribution width was observed after 24 h of resting (r = -0.83, p = 0.02), whereas positive correlations of metallothionein with hemoglobin, red cell count, and mean corpuscular hemoglobin concentration were observed after 5 d of resting (r &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;gt;/= 0.76, p &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;/= 0.05). Our results suggest that a longer resting period favors homeostatic adjustments in the erythrocyte population and in the copper/zinc-dependent antioxidant system in elite judo athletes.

Research paper thumbnail of Bioelectrical impedance vector analysis and body composition in cervical spinal cord injury: A pilot study

Frontiers in Nutrition

IntroductionBody composition assessment in cervical spinal cord injury (c-SCI) individuals is imp... more IntroductionBody composition assessment in cervical spinal cord injury (c-SCI) individuals is important to monitor the fat free-mass (FFM) loss, due to immobilization, or gain, due to exercise practice. Single frequency bioelectrical impedance analysis (SF-BIA) is low in cost, simple and easy.ObjectivesThe aims of this study are: to evaluate the concordance between the FFM values obtained using dual X-ray absorptiometry (DXA) and the three SF-BIA previous predictive equations; and to test the applicability of the bioelectrical impedance vector analysis (BIVA).MethodsTwenty-three c-SCI males were divided into two groups: Physically active (PA; n = 13; at least 150 min/week) and non-active individuals (NPA) and were assessed by DXA and SF-BIA simultaneously.ResultsFFM values were similar between groups PA and NPA. Considering all participants, FFM values obtained by Kocina and Heyward (>11%) and Sun (<15.4%) predictive equations were different when compared to DXA (p < 0.01)....

Research paper thumbnail of Fat-Free Mass Using Bioelectrical Impedance Analysis as an Alternative to Dual-Energy X-Ray Absorptiometry in Calculating Energy Availability in Female Adolescent Athletes

International Journal of Sport Nutrition and Exercise Metabolism

Energy availability (EA) is calculated by subtracting exercise energy expenditure from energy int... more Energy availability (EA) is calculated by subtracting exercise energy expenditure from energy intake, adjusted for fat-free mass (FFM) obtained using accurate methods, such as dual-energy X-ray absorptiometry (DXA). Unlike DXA, the bioelectrical impedance analysis (BIA) is low in cost, simple and easy to carry out. This study aimed to test the concordance between the calculation of EA using FFM values from four BIA predictive equations and FFM obtained using DXA in female adolescent athletes (n = 94), recruited via social media. Paired Student’s t test, Wilcoxon test, Lin’s concordance correlation coefficient, root mean square error, limits of agreement, and mean absolute percentage error were used to evaluate agreement between the FFM values obtained by the four SF-BIA predictive equations and DXA. Regression linear analysis was used to determine the relation between FFM values obtained using DXA and the BIA predictive equations. Standardized residuals of the FFM and EA were calcul...

Research paper thumbnail of Physical exercise practice influences serum concentrations of 25(OH)D and PTH in spinal cord injured men

Research paper thumbnail of Influence of bone age and allelic variants of the vitamin D receptor (VDR) gene on bone mass indices in adolescent boys

Research paper thumbnail of Vitamin D is directly associated with favorable glycemic, lipid, and inflammatory profiles in individuals with at least one component of metabolic syndrome irrespective of total adiposity: Pró-Saúde Study, Brazil

Nutrition Research, 2021

Vitamin D insufficiency has been suggested as a risk factor for several metabolic disorders. The ... more Vitamin D insufficiency has been suggested as a risk factor for several metabolic disorders. The objective of the study was to investigate the association between serum 25 hydroxyvitamin D [25(OH)D] and metabolic health markers of Brazilian individuals with normal-weight, overweight or obesity. We hypothesized that serum 25(OH)D would be inversely associated with glycemic, lipid and inflammatory markers indicative of metabolic abnormality. Data of 511 individuals (33-79 years), recruited from a longitudinal investigation (Pró-Saúde Study), were analyzed cross-sectionally. Anthropometric, biochemical, body composition, socio-demographic and lifestyle data were collected. Based on body mass index (BMI; normal weight, overweight, obesity) and metabolic health (metabolically healthy (MH) and metabolically unhealthy (MU)) categories, the participants were classified into 6 phenotypes. Individuals having zero components of the metabolic syndrome were considered as "MH". MH obesity was frequent in 2.0% of the participants and 56.0% exhibited vitamin D insufficiency (<20 ng/mL). In the subgroups of the same BMI category, there were no significant differences in 25(OH)D concentrations between individuals classified as MH and MU. After adjustments (including %body fat and BMI), an inverse association was observed between 25(OH)D and visceral adipose tissue (B = -6.46, 95% confidence interval, CI: -12.87, -0.04), leptin (B = -0.09, 95% confidence interval, CI: -0.14, -0.03), insulin (B = -0.21, 95%CI: -0.34, -0.07), HOMA-IR (B = -0.06, 95%CI: -0.10, -0.02), triglycerides (B = -2.44, 95%CI: -3.66, -1.22), and TNF-α (B = -0.12, 95%CI: -0.24, -0.005) only in MU individuals. Our results indicate that the association of 25(OH)D concentrations with a favorable biochemical profile (glycemic, lipidic and inflammatory) seems to depend on the individual's overall metabolic health, suggesting more benefits from higher serum vitamin D in MU individuals, regardless of their adiposity.

Research paper thumbnail of Assessment of trends of nutritional status, central obesity, and growth profile using anthropometric measurements in adolescent athletes from a sport-oriented public school

The Journal of Sports Medicine and Physical Fitness, 2019

BACKGROUND The aims were to evaluate the nutritional status, central adiposity, and physical grow... more BACKGROUND The aims were to evaluate the nutritional status, central adiposity, and physical growth profile of adolescents in a sports-oriented public school (SOPS) and to describe the results considering the Brazilian and American adolescents' survey studies. METHODS This study was a dynamic cohort, performed in 2012-2013 and 2015. 1,082 adolescent athletes (11-16 years old) participated. Anthropometric data (height [H], weight, and waist circumference [WC]) were collected yearly. The nutritional status was assessed using BMI z-score; trunk fat, using WC and WC/H ratio; and growth, using height z-score. The SOPS results were described considering data from the Brazilian Household Budget Survey (HBS-Southeast region) and the National Health and Nutrition Examination Survey (NHANES). Anthropometric data was compared using linear mixed effects regression models, considering sex, age group and time. RESULTS Considering height z-score and BMI z-score values, none of the adolescents in the SOPS had short stature or underweight, and the obesity prevalence was approximately 1% throughout the study. HBS survey revealed 3.4% of obesity prevalence in adolescents (11-16 years old). Considering age and time, significant differences in WC for both sexes were observed. However, considering NHANES data, our participants were classified in P5-25. CONCLUSIONS These results suggest that the nutritional status of adolescents in the SOPS was good, obesity prevalence was 1% and WC measurement was within P5-25 considering NHANES data. This supports the public policies encouraging involvement in sports at school, which should be one of the priorities in the health promotion agenda, reducing the development of future chronic diseases.

Research paper thumbnail of Leptin Gene Polymorphism, Plasma Leptin Levels And Aerobic Capacity In Response To Intense Exercise

Medicine & Science in Sports & Exercise, 2019

PURPOSE: The aim of the present study was to determine the association between single nucleotide ... more PURPOSE: The aim of the present study was to determine the association between single nucleotide polymorphisms (SNPs) in the leptin (LEP) and leptin receptor (LEPR) genes, and body composition, plasma leptin levels, and aerobic capacity in response to 48 h of intense exercise. METHODS: Male Brazilian Army cadets (n=163; 21.6±0.4 years) were genotyped for the LEP 19G>A (rs2167270) and -2548G>A (rs7799039), and LEPR 668A>G (rs1137101) polymorphisms. Anthropometric, hormonal and aerobic capacity parameters were measured 48 h after intense military exercise. RESULTS: Sixty-seven percent of participants were classified as having superior aerobic conditioning (VO2max=55.2±0.2 mL∙kg-1∙min-1), and had lower plasma leptin levels (36%, P=0.008) than subjects classified as having excellent aerobic conditioning. Considering all subjects VO2max correlated negatively with fat mass (r=-0.212; P=0.007), whereas plasma leptin level correlated positively with body fat (r=0.642, P=0.005) and fat mass (r=0.723, P=0.001), and negatively with VO2max (r=-0.223, P=0.005). Only individuals homozygous for the wildtype homozygote for LEP -2548G>A SNP had higher plasma leptin values (59%), body fat (85%), and fat mass (82%) (P<0.05) compared to those with a GA genotype. LEP -2548G>A SNP was a positive predictor for plasma leptin levels (B=0.217, P=0.02), after adjusting for fat mass, and therefore, genotype effects may affect leptin levels. CONCLUSIONS: Polymorphism in the leptin promoter gene may influence plasma leptin levels, but not aerobic capacity, in response to intense physical exercise. Additional studies are needed to show the precise contribution of the SNPs on aerobic capacity. Financial support FAPERJ.

Research paper thumbnail of Smoking status affects bioimpedance-derived phase angle in men but not in women: The Pró-Saúde Study, Brazil

Nutrition, 2019

This is a PDF file of an unedited manuscript that has been accepted for publication. As a service... more This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Highlights  Current male smokers have lower phase angle (PhA) values than never smokers.  PhA in current male smokers may result from cell damage due to unhealthy lifestyle.  Inflammation caused by smoking may be an additional contribution to lower PhA.  PhA values are not different between female smoking categories.

Research paper thumbnail of Fat-free mass in adolescent athletes: Accuracy of bioimpedance equations and identification of new predictive equations

Nutrition, 2019

This is a PDF file of an unedited manuscript that has been accepted for publication. As a service... more This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Highlights 1-This study showed that, besides chronological age, biological maturity is also important; 2-The effect of biological maturity on bioelectrical values was observed; 3-Selected BIA equations, from literature, were not adequate for analyzing body composition in Brazilian adolescent athletes; 4-New BIA equations were proposed, considering age and skeletal maturity for both sexes, and menarche status for females; 5-BIVA showed higher phase angle for mature adolescents.

Research paper thumbnail of Açai (Euterpe oleracea Mart.) seed flour prevents obesity-induced hepatic steatosis regulating lipid metabolism by increasing cholesterol excretion in high-fat diet-fed mice

Food research international (Ottawa, Ont.), 2018

Açai (Euterpe oleracea Mart.) seed flour prevents obesity-induced hepatic steatosis regulating li... more Açai (Euterpe oleracea Mart.) seed flour prevents obesity-induced hepatic steatosis regulating lipid metabolism by increasing cholesterol excretion in high-fat diet-fed mice

Research paper thumbnail of Bioimpedance parameters in adolescent athletes in relation to bone maturity and biochemical zinc indices

Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS), 2018

Phase angle (PA) is derived from resistance and reactance determined by bioimpedance analysis (BI... more Phase angle (PA) is derived from resistance and reactance determined by bioimpedance analysis (BIA) and it appears to relate to cellular stability and integrity. Interpretation of PA values could be complemented by bioelectrical impedance vector analysis (BIVA), which relates to body hydration and structure. Body composition, age, sex, and nutrients are known to stabilize cell membranes, such as zinc, have been related to PA although information is scarce in adolescent athletes. The aim of the present study was to assess the association of body composition, skeletal maturity and zinc biochemical indices with phase angle and bioelectrical impedance parameters, in forty male adolescent soccer athletes (13.4±0.6years). BIA was performed with a single-frequency tetrapolar analyzer. PA and BIVA were determined using resistance and reactance BIA data. Plasma and erythrocyte zinc concentrations were measured using inductively coupled plasma-optical emission spectrometry. Body composition w...

Research paper thumbnail of Zinc and Copper Biochemical Indices of Antioxidant Status in Elite Athletes of Different Modalities

International Journal of Sport Nutrition and Exercise Metabolism, 2004

The purpose of this study was lo compare zinc and copper biochemical indices of antioxidant statu... more The purpose of this study was lo compare zinc and copper biochemical indices of antioxidant status and their relationship in elite athletes of different modalities: aerobic with high-impact (triathletes, n = 10 and long-distance runners, n = 12), anaerobic with high-impact (short-distance runners, n = 9), and anaerobic with low-impact (short-distance swimmers, n = 13). The influence of recent dietary intake and body composition was also evaluated. A venous blood sample was drawn 16-20 hr after competition for the following measurements: packed-cell volume and hemoglobin in blood; copper and zinc in plasma and erythrocytes; ceruloplasmin in plasma; superoxide dismutase activity and metal-lothionein in erythrocyles; and erythrocyte osmotic fragility. Zinc and copper intakes were not different in the athlete groups and did not affect the biochemical indices measured. Athletes of the long-distance high-impact aerobic modalities had higher indices of antioxidant protection (erythrocyte z...

Research paper thumbnail of Associação entre a bioimpedância elétrica e a prova de função respiratória em homens com câncer de pulmão do tipo não pequenas células

Research paper thumbnail of O Consumo De Resveratrol Por Jogadores De Basquete Reduz a Concentração De Albumina, Ácido Úrico e Ferro Plasmáticos

Research paper thumbnail of Distribuição De Gordura Corporal e Capacidade Antioxidante Em Atletas Femininas

Research paper thumbnail of Aerobic Conditioning Might Protect Against Liver and Muscle Injury Caused by Short-Term Military Training

Journal of strength and conditioning research / National Strength & Conditioning Association, 2016

Koury, JC, Daleprane, JB, Pitaluga-Filho, MV, de Oliveira, CF, Gonçalves, MC, and Passos, MCF. Ae... more Koury, JC, Daleprane, JB, Pitaluga-Filho, MV, de Oliveira, CF, Gonçalves, MC, and Passos, MCF. Aerobic conditioning might protect against liver and muscle injury caused by short-term military training. J Strength Cond Res 30(2): 454-460, 2016-This study aimed to compare the biochemical markers of muscle and liver injury and total antioxidant capacity in army cadets after a traditional army physical training program and to correlate these effects with aerobic conditioning. Male army cadets (n = 87; age, 20 ± 2 years) were evaluated 12 hours before the start of training (T0), 12 hours after a 30-km march (T1), and 48 hours after military training (T2). Creatine kinase (CK), aspartate aminotransferase (AST), and alanine aminotransferase (ALT) serum levels were measured using an autoanalyzer. Total antioxidant capacity was determined by 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity (Sc%). Seventy-four percent of army cadets were classified as having excellent aerobic conditi...

Research paper thumbnail of Effects of proanthocyanidin on oxidative stress biomarkers and adipokines in army cadets: a placebo-controlled, double-blind study

European journal of nutrition, Jan 24, 2015

The relatively recent advent of polyphenol supplement for exercise studies has been tested in a v... more The relatively recent advent of polyphenol supplement for exercise studies has been tested in a variety of forms and doses. However, the dose-response on adipokines and oxidative stress biomarker effect remains unknown. The aim of the present study was to assess the effect of intense, long-duration (48-h) exercise, and a single dose of proanthocyanidin, on plasma leptin, adiponectin, and electronegative low-density lipoprotein (LDL(-)) concentrations. Fifty-four healthy male army cadets (22 ± 2 years) participated in a double-blind, randomized, placebo-controlled study and were distributed between control (CG; n = 27) and supplemented groups (SG; n = 27). Immediately before the start of the exercise, both CG and SG groups received a capsule containing starch (200 mg) or proanthocyanidin (dry Vitis vinifera extract, 200 mg), respectively. Following a 12-h fasting period, the plasma adiponectin, leptin, and LDL(-) concentrations were measured prior to the start of the exercise after 2...

Research paper thumbnail of Is it possible to identify underlying cardiovascular risk in young trained military?

The Journal of sports medicine and physical fitness, Jan 4, 2014

Exercise is an important tool used in the prevention of cardiovascular risk. Contradictorily, eli... more Exercise is an important tool used in the prevention of cardiovascular risk. Contradictorily, elite athletes and military have been found to have at high cardiovascular risk. This study aimed to identify underlying cardiovascular risk in young trained military using different parameters including the leptin:adiponectin (L:A) ratio. Healthy military males (n=54) participated in this study. Anthropometric and body composition were measured; after overnight fast were determined: plasma lipid profile, electronegative-LDL (LDL (-)), leptin and adiponectin concentrations. Data were expressed as median [25th and 75th percentiles]. The relationship between variables was tested using the Spearman correlation, with p<0.05 considered significant. Total cholesterol (143[130-157 mg/dL]), triglycerides (TG 88.5[63-116 mg/dL]) and LDL-c (77.6[68.8-94.5 mg/dL]) plasma levels were adequate. However, all participants were found to have HDL-c below 60 mg/dL (43[40-49 mg/dL]) and 44% (n=24) had a TG...

Research paper thumbnail of Phase Angle and Bioelectrical Impedance Vectors in Adolescent and Adult Male Athletes

International Journal of Sports Physiology and Performance, 2014

The aim of the current study was to assess phase angle (PA) and bioelectrical impedance vectors (... more The aim of the current study was to assess phase angle (PA) and bioelectrical impedance vectors (BIVA) in adolescent (n = 105, 12–19 y) and adult (n = 90, 20–50 y) male athletes practicing varied sports modalities. Bioelectrical impedance analysis (BIA) was performed with a single-frequency tetrapolar impedance analyzer after the athletes had fasted overnight for 8 h. PA and BIVA were determined from BIA data. PA presented correlations (P < .01) with body-mass index (r = .58) in all athletes and also with age in adolescent (r = .63) and adult (r = –.27) athletes. Compared with adults, adolescent athletes presented lower PA and higher frequency of PA below the 5th percentile of a reference population (P < .001). The adolescents with low PA were mostly football and basketball players. The BIVA confidence ellipses of adult and adolescent athletes were different (P < .001) between them and from their respective reference populations and were closer than those of adult and adole...

Research paper thumbnail of Effect of the Period of Resting in Elite Judo Athletes: Hematological Indices and Copper/ Zinc-Dependent Antioxidant Capacity

Biological Trace Element Research, 2005

The purpose of this study was to evaluate the effect of the resting period on hematological and c... more The purpose of this study was to evaluate the effect of the resting period on hematological and copper-zinc-dependent antioxidant indices in Brazilian elite judo athletes (n = 7). Venous blood samples were collected after 24-h and 5-d periods of resting following a competition, with an interval of 30 d between collections. Two months prior to and during the study, each athlete received an individualized adequate diet. Body composition was determined at both study periods. The following were analyzed: in whole blood, hemoglobin, hematocrit, red cell count, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration, red cell distribution width, and white cell count; in plasma, zinc, copper, iron, ceruloplasmin, and total iron-binding capacity; in erythrocytes, metallothionein, copper/zinc superoxide dismutase, and osmotic fragility. Dietary intake and body composition did not affect the biochemical measurements. A significant reduction in ceruloplasmin and superoxide dismutase activity was found after 5 d compared to 24 h of resting. A significant correlation between erythrocyte metallothionein and red cell distribution width was observed after 24 h of resting (r = -0.83, p = 0.02), whereas positive correlations of metallothionein with hemoglobin, red cell count, and mean corpuscular hemoglobin concentration were observed after 5 d of resting (r &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;gt;/= 0.76, p &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;/= 0.05). Our results suggest that a longer resting period favors homeostatic adjustments in the erythrocyte population and in the copper/zinc-dependent antioxidant system in elite judo athletes.