Andrew Hatchett - Academia.edu (original) (raw)

Papers by Andrew Hatchett

The aim of this research was to determine the influence a shoe insert with a textured, thermos-pl... more The aim of this research was to determine the influence a shoe insert with a textured, thermos-plastic heel has on running gait. Sixteen (16) participants completed a three-stage protocol to assess step length, contact time and gait imbalance in barefoot, shod and shod with insert conditions. Results indicated significant correlations between the barefoot condition and shod with the insert condition for contact time (r=0.773, p=0.015), imbalance (r=0.838, p=0.005) and step length (r=1.000, p=0.000). Further analysis revealed no significant difference between the barefoot and shod with the insert conditions for contact time, imbalance and step length. Based upon these results, running with a textured, thermos-plastic insert may influence a runner’s gait to more resemble that of a barefoot condition.

Introduction: Exercise induced muscle damage (EIMD) can result in a condition commonly known as d... more Introduction: Exercise induced muscle damage (EIMD) can result in a condition commonly known as delayed onset of muscle soreness (DOMS). The influence the well-known anti-inflammatory effects of cannabidiol (CBD) can have on DOMS has yet to be determined. The aim of this study was to determine the influence CBD can have on EIMD DOMS. Materials and Methods: Twenty-three trained participants completed a lower extremity EIMD protocol prior to being randomly assigned to either a CBD, MCT or null group. Self-report visual analog scale (VAS) scores were used to determine the level of soreness the participant was experiencing throughout the study (pre-, post-EIMD protocol, 24-, 48-, 72- and 96-hours post-EIMD protocol). The CBD group was given a 1ml solution of CBD and MCT oil. This solution contained 16.67mg of CBD. The MCT group received 1ml of MCT. The null group received nothing. Results: Each group reported significantly different post-EIMD VAS score when compared to pre-EIMD. The CBD...

Medicine & Science in Sports & Exercise

Sports

Running on a non-motorized, curved-deck treadmill is thought to improve gait mechanics. It is not... more Running on a non-motorized, curved-deck treadmill is thought to improve gait mechanics. It is not known, though, whether the change in gait carries over to running on a motorized treadmill on level ground. To determine the effect of running on a curved non-motorized treadmill (CNT) on gait characteristics, measured during a subsequent bout of running on a traditional motorized treadmill (TMT), sixteen healthy college-aged participants, aged (mean ± SD) 20.4 ± 1.6 years, volunteered to have their gait analyzed while running on a TMT and CNT. After familiarization with, and a warm-up on, both treadmills, each subject completed five 4-min bouts of running, alternating between traditional motorized and curved non-motorized treadmills: TMT-1, CNT-1, TMT-2, CNT-2, and TMT-3. Variables of interest included step length (m), stride length (m), imbalance score (%), and stride angle (•), and were measured using Optogait gait analysis equipment. We found differences in gait characteristics among TMT-1, TMT-2, and TMT-3, which can be attributed to running on the CNT. The results show that running on a CNT resulted in significant changes in gait characteristics (step length, stride length, imbalance score and stride angle). These findings suggest that running on a CNT can significantly influence running gait.

Journal of Sports Research

Ergometers have been developed as off-season or dryland training tools for sports such as rowing ... more Ergometers have been developed as off-season or dryland training tools for sports such as rowing and crosscountry skiing. These ergometers have recently been staples in the training methods for functional fitness athletes. Purpose: To examine the relationship between athlete strength and power with rowing ergometer and ski ergometer performance. Methods: Eight healthy college-aged participants, age 18-26 years volunteered to go through a series of strength and ergometric exercises while being assessed with a metabolic cart to measure gas exchange. The three strength measures were a maximal effort on bench press, back squat, and deadlift. A watt bike was also used to assess lower body power output. All strength tests were performed following the National Strength and Conditioning Association protocols. The ergometric performances on ski ergometer and rower were performed both using the Concept2 model with the damper settings at 10. Results: A significant relationship exists between strength and ergometer performance at both sprint and mid-distances. Conclusions: Athlete strength is a significant contributor to ski ergometer and rowing ergometer performance at 100-meter and 2000-meter performances. When considering training protocols for rowing and crosscountry skiing, athletes and coaches should invest in addressing strength as a meaningful portion of the training effort. Contribution/Originality: The paper's primary contribution is finding the relationship athlete strength and power have with ergometer performance.

Biomedical Journal of Scientific & Technical Research

Sports

The purpose of the study reported here was to determine the relationship between an endurance pad... more The purpose of the study reported here was to determine the relationship between an endurance paddle-sport athlete's total functional movement screening (FMS) score and individual race performance. Fifty elite level endurance canoeists and kayakers completed the seven-stage FMS protocol prior to the 2016 United States Canoe and Kayak Association National Championship race. Time taken to finish the race was then associated to overall FMS score and respective sub-scores. Total FMS score and various sub-scores were significantly related to race performance. Female and male athletes differed in which sub-scores were shown to be significantly correlated to finishing time. Outcomes from this study indicate that limitations in functional movement are related to endurance paddle-sport race performance.

Medicine & Science in Sports & Exercise

Medicine & Science in Sports & Exercise

Sports, 2016

This investigation sought to examine the effect that a chocolate milk solution (CMS) and a raw mi... more This investigation sought to examine the effect that a chocolate milk solution (CMS) and a raw milk solution (RMS) had on lower extremity induced delayed onset of muscle soreness (DOMS). Twenty trained male participants completed a set of questionnaires, prior to completing a lower extremity DOMS protocol, to determine the level of discomfort and functional limitations. Once the DOMS protocol was completed, participants were randomly assigned to either the CM or RM group. Once assigned, participants ingested 240 mL of the respective solution and completed the same set of questionnaires immediately post, 24-, 48-and 72-h post DOMS protocol. Additionally, for 10 days post-ingestion participants were contacted to learn if any negative effects were experienced as a result of ingesting either solution. Both groups reported an increase in lower extremity discomfort at each data collection interval post-DOMS protocol (post, 24-, 48-and 72-h). Participants assigned to the RM group reported high discomfort post and a relative decline in discomfort from immediately post-DOMS protocol to 72-h post. The RMS group reported substantially less discomfort at 72-h when compared to the CMS group. Ingestion of a raw milk solution immediately post strength exercise can substantially reduce the level of self-reported discomfort associated with DOMS.

Biology of Sport, 2015

CrossFit is becoming increasingly popular as a method to increase fitness and as a competitive sp... more CrossFit is becoming increasingly popular as a method to increase fitness and as a competitive sport in both the Unites States and Europe. However, little research on this mode of exercise has been performed to date. The purpose of the present investigation involving experienced CrossFit athletes and naïve healthy young men was to investigate the relationship of aerobic capacity and anaerobic power to performance in two representative CrossFit workouts: the first workout was 12 minutes in duration, and the second was based on the total time to complete the prescribed exercise. The participants were 32 healthy adult males, who were either naïve to CrossFit exercise or had competed in CrossFit competitions. Linear regression was undertaken to predict performance on the first workout (time) with age, group (naïve or CrossFit athlete), VO 2 max and anaerobic power, which were all significant predictors (p<0.05) in the model. The second workout (repetitions), when examined similarly using regression, only resulted in CrossFit experience as a significant predictor (p<0.05). The results of the study suggest that a history of participation in CrossFit competition is a key component of performance in CrossFit workouts which are representative of those performed in CrossFit, and that, in at least one these workouts, aerobic capacity and anaerobic power are associated with success.

Psycho-Oncology, 2013

The aim of this study is to evaluate a 12-week social cognitive theory (SCT)-based email interven... more The aim of this study is to evaluate a 12-week social cognitive theory (SCT)-based email intervention designed to influence the physical activity of survivors of breast cancer. Seventy-four volunteers (intervention group, n = 36; control group, n = 38) were recruited by mass email and written letter solicitation. Participants completed a series of online questionnaires measuring demographic characteristics, physical activity readiness, level of physical activity and selected SCT variables at baseline, 6 and 12 weeks. The intervention group received email messages based on SCT designed specifically for breast cancer survivors and targeting physical activity. For the first 6 weeks of the intervention, participants assigned to the intervention group received messages weekly, from weeks 7 to 12, participants received messages every other week and had access to an e-counselor. The control group did not receive email messages, nor did they have access to an e-counselor. Significant differences in levels of self-reported vigorous physical activity were found between groups at 6 and 12 weeks. Significant differences were also found for self-reported moderate physical activity at 12 weeks. Email-based interventions based on SCT can significantly influence levels of self-reported physical activity of breast cancer survivors.

Medicine & Science in Sports & Exercise, 2009

Medicine & Science in Sports & Exercise, 2009

Medicine & Science in Sports & Exercise, 2010

Medicine & Science in Sports & Exercise, 2007

Medicine & Science in Sports & Exercise, 2008

Running on a non-motorized, curved-deck treadmill is thought to improve gait mechanics. It is not... more Running on a non-motorized, curved-deck treadmill is thought to improve gait mechanics. It is not known, though, if the change in gait carries over to running on a motorized treadmill or level ground. To determine the effect of running on a curved non-motorized treadmill (CNT) on gait characteristics measured during a subsequent bout of running on a traditional motorized treadmill (TMT). Sixteen healthy college-aged participants, age (mean±SD) 20.4±1.6 years volunteered to have their gait analyzed while running on a TMT and CNT. After familiarization and warm-up on both treadmills, each subject completed five, 4-minute bouts of running alternating between traditional motorized and curved non-motorized treadmills: TMT-1, CNT-1, TMT-2, CNT-2, and TMT-3. Variables of interest included step length (m), stride length (m), imbalance score (%), and step angle (°) and were measured using Optogait gait analysis equipment. Differences in gait char acteristics among TMT-1, TM...

The aim of this research was to determine the influence a shoe insert with a textured, thermos-pl... more The aim of this research was to determine the influence a shoe insert with a textured, thermos-plastic heel has on running gait. Sixteen (16) participants completed a three-stage protocol to assess step length, contact time and gait imbalance in barefoot, shod and shod with insert conditions. Results indicated significant correlations between the barefoot condition and shod with the insert condition for contact time (r=0.773, p=0.015), imbalance (r=0.838, p=0.005) and step length (r=1.000, p=0.000). Further analysis revealed no significant difference between the barefoot and shod with the insert conditions for contact time, imbalance and step length. Based upon these results, running with a textured, thermos-plastic insert may influence a runner’s gait to more resemble that of a barefoot condition.

Introduction: Exercise induced muscle damage (EIMD) can result in a condition commonly known as d... more Introduction: Exercise induced muscle damage (EIMD) can result in a condition commonly known as delayed onset of muscle soreness (DOMS). The influence the well-known anti-inflammatory effects of cannabidiol (CBD) can have on DOMS has yet to be determined. The aim of this study was to determine the influence CBD can have on EIMD DOMS. Materials and Methods: Twenty-three trained participants completed a lower extremity EIMD protocol prior to being randomly assigned to either a CBD, MCT or null group. Self-report visual analog scale (VAS) scores were used to determine the level of soreness the participant was experiencing throughout the study (pre-, post-EIMD protocol, 24-, 48-, 72- and 96-hours post-EIMD protocol). The CBD group was given a 1ml solution of CBD and MCT oil. This solution contained 16.67mg of CBD. The MCT group received 1ml of MCT. The null group received nothing. Results: Each group reported significantly different post-EIMD VAS score when compared to pre-EIMD. The CBD...

Medicine & Science in Sports & Exercise

Sports

Running on a non-motorized, curved-deck treadmill is thought to improve gait mechanics. It is not... more Running on a non-motorized, curved-deck treadmill is thought to improve gait mechanics. It is not known, though, whether the change in gait carries over to running on a motorized treadmill on level ground. To determine the effect of running on a curved non-motorized treadmill (CNT) on gait characteristics, measured during a subsequent bout of running on a traditional motorized treadmill (TMT), sixteen healthy college-aged participants, aged (mean ± SD) 20.4 ± 1.6 years, volunteered to have their gait analyzed while running on a TMT and CNT. After familiarization with, and a warm-up on, both treadmills, each subject completed five 4-min bouts of running, alternating between traditional motorized and curved non-motorized treadmills: TMT-1, CNT-1, TMT-2, CNT-2, and TMT-3. Variables of interest included step length (m), stride length (m), imbalance score (%), and stride angle (•), and were measured using Optogait gait analysis equipment. We found differences in gait characteristics among TMT-1, TMT-2, and TMT-3, which can be attributed to running on the CNT. The results show that running on a CNT resulted in significant changes in gait characteristics (step length, stride length, imbalance score and stride angle). These findings suggest that running on a CNT can significantly influence running gait.

Journal of Sports Research

Ergometers have been developed as off-season or dryland training tools for sports such as rowing ... more Ergometers have been developed as off-season or dryland training tools for sports such as rowing and crosscountry skiing. These ergometers have recently been staples in the training methods for functional fitness athletes. Purpose: To examine the relationship between athlete strength and power with rowing ergometer and ski ergometer performance. Methods: Eight healthy college-aged participants, age 18-26 years volunteered to go through a series of strength and ergometric exercises while being assessed with a metabolic cart to measure gas exchange. The three strength measures were a maximal effort on bench press, back squat, and deadlift. A watt bike was also used to assess lower body power output. All strength tests were performed following the National Strength and Conditioning Association protocols. The ergometric performances on ski ergometer and rower were performed both using the Concept2 model with the damper settings at 10. Results: A significant relationship exists between strength and ergometer performance at both sprint and mid-distances. Conclusions: Athlete strength is a significant contributor to ski ergometer and rowing ergometer performance at 100-meter and 2000-meter performances. When considering training protocols for rowing and crosscountry skiing, athletes and coaches should invest in addressing strength as a meaningful portion of the training effort. Contribution/Originality: The paper's primary contribution is finding the relationship athlete strength and power have with ergometer performance.

Biomedical Journal of Scientific & Technical Research

Sports

The purpose of the study reported here was to determine the relationship between an endurance pad... more The purpose of the study reported here was to determine the relationship between an endurance paddle-sport athlete's total functional movement screening (FMS) score and individual race performance. Fifty elite level endurance canoeists and kayakers completed the seven-stage FMS protocol prior to the 2016 United States Canoe and Kayak Association National Championship race. Time taken to finish the race was then associated to overall FMS score and respective sub-scores. Total FMS score and various sub-scores were significantly related to race performance. Female and male athletes differed in which sub-scores were shown to be significantly correlated to finishing time. Outcomes from this study indicate that limitations in functional movement are related to endurance paddle-sport race performance.

Medicine & Science in Sports & Exercise

Medicine & Science in Sports & Exercise

Sports, 2016

This investigation sought to examine the effect that a chocolate milk solution (CMS) and a raw mi... more This investigation sought to examine the effect that a chocolate milk solution (CMS) and a raw milk solution (RMS) had on lower extremity induced delayed onset of muscle soreness (DOMS). Twenty trained male participants completed a set of questionnaires, prior to completing a lower extremity DOMS protocol, to determine the level of discomfort and functional limitations. Once the DOMS protocol was completed, participants were randomly assigned to either the CM or RM group. Once assigned, participants ingested 240 mL of the respective solution and completed the same set of questionnaires immediately post, 24-, 48-and 72-h post DOMS protocol. Additionally, for 10 days post-ingestion participants were contacted to learn if any negative effects were experienced as a result of ingesting either solution. Both groups reported an increase in lower extremity discomfort at each data collection interval post-DOMS protocol (post, 24-, 48-and 72-h). Participants assigned to the RM group reported high discomfort post and a relative decline in discomfort from immediately post-DOMS protocol to 72-h post. The RMS group reported substantially less discomfort at 72-h when compared to the CMS group. Ingestion of a raw milk solution immediately post strength exercise can substantially reduce the level of self-reported discomfort associated with DOMS.

Biology of Sport, 2015

CrossFit is becoming increasingly popular as a method to increase fitness and as a competitive sp... more CrossFit is becoming increasingly popular as a method to increase fitness and as a competitive sport in both the Unites States and Europe. However, little research on this mode of exercise has been performed to date. The purpose of the present investigation involving experienced CrossFit athletes and naïve healthy young men was to investigate the relationship of aerobic capacity and anaerobic power to performance in two representative CrossFit workouts: the first workout was 12 minutes in duration, and the second was based on the total time to complete the prescribed exercise. The participants were 32 healthy adult males, who were either naïve to CrossFit exercise or had competed in CrossFit competitions. Linear regression was undertaken to predict performance on the first workout (time) with age, group (naïve or CrossFit athlete), VO 2 max and anaerobic power, which were all significant predictors (p<0.05) in the model. The second workout (repetitions), when examined similarly using regression, only resulted in CrossFit experience as a significant predictor (p<0.05). The results of the study suggest that a history of participation in CrossFit competition is a key component of performance in CrossFit workouts which are representative of those performed in CrossFit, and that, in at least one these workouts, aerobic capacity and anaerobic power are associated with success.

Psycho-Oncology, 2013

The aim of this study is to evaluate a 12-week social cognitive theory (SCT)-based email interven... more The aim of this study is to evaluate a 12-week social cognitive theory (SCT)-based email intervention designed to influence the physical activity of survivors of breast cancer. Seventy-four volunteers (intervention group, n = 36; control group, n = 38) were recruited by mass email and written letter solicitation. Participants completed a series of online questionnaires measuring demographic characteristics, physical activity readiness, level of physical activity and selected SCT variables at baseline, 6 and 12 weeks. The intervention group received email messages based on SCT designed specifically for breast cancer survivors and targeting physical activity. For the first 6 weeks of the intervention, participants assigned to the intervention group received messages weekly, from weeks 7 to 12, participants received messages every other week and had access to an e-counselor. The control group did not receive email messages, nor did they have access to an e-counselor. Significant differences in levels of self-reported vigorous physical activity were found between groups at 6 and 12 weeks. Significant differences were also found for self-reported moderate physical activity at 12 weeks. Email-based interventions based on SCT can significantly influence levels of self-reported physical activity of breast cancer survivors.

Medicine & Science in Sports & Exercise, 2009

Medicine & Science in Sports & Exercise, 2009

Medicine & Science in Sports & Exercise, 2010

Medicine & Science in Sports & Exercise, 2007

Medicine & Science in Sports & Exercise, 2008

Running on a non-motorized, curved-deck treadmill is thought to improve gait mechanics. It is not... more Running on a non-motorized, curved-deck treadmill is thought to improve gait mechanics. It is not known, though, if the change in gait carries over to running on a motorized treadmill or level ground. To determine the effect of running on a curved non-motorized treadmill (CNT) on gait characteristics measured during a subsequent bout of running on a traditional motorized treadmill (TMT). Sixteen healthy college-aged participants, age (mean±SD) 20.4±1.6 years volunteered to have their gait analyzed while running on a TMT and CNT. After familiarization and warm-up on both treadmills, each subject completed five, 4-minute bouts of running alternating between traditional motorized and curved non-motorized treadmills: TMT-1, CNT-1, TMT-2, CNT-2, and TMT-3. Variables of interest included step length (m), stride length (m), imbalance score (%), and step angle (°) and were measured using Optogait gait analysis equipment. Differences in gait char acteristics among TMT-1, TM...