Influence of Leg Dominance on Single-Leg Stance Performance During Dynamic Conditions (original) (raw)
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Türkiye Fiziksel Tıp ve Rehabilitasyon Dergisi, 2013
The primary purpose of the present study was to examine differences in balance performance between the dominant and nondominant legs during dynamic balance tasks in healthy individuals with no regular exercise backgrounds. As a secondary purpose, gender differences in single-leg stance were also investigated. Material and Methods: Twenty-one men and 24 women participated in this study. Single-leg balance performance was evaluated by the Biodex Stability System SD. All subjects were tested at level 1 for 20 sec, and 1-minute rest intervals were provided among 6 trials for each leg. Results: According to the results, there was no multivariate effect of leg dominance on any stability index, indicating symmetry between limbs in terms of balance performance. Mean comparisons showed that women had significantly better balance scores than men on overall (p<0.05), antero-posterior (p<0.05), and medio-lateral (p<0.05) stability indexes. Conclusion: Functional symmetry exists between the dominant and nondominant leg in all stability indexes of balance performance of sedentary individuals. Female subjects swayed less than males on both the dominant and the nondominant leg measurements in all directions (overall, antero-posterior, and medio-lateral directions).
Türk Fizyoterapi ve Rehabilitasyon Dergisi, 2019
Purpose: The aim of the present study was to investigate the effects of age, gender, height, weight, body mass index (BMI), and foot posture on single leg standing balance performance.Methods: A total of 76 healthy young asymptomatic adults were enrolled (52 females and 24 males) with an age range of 19-49 years. Age, gender, height, weight, and BMI, foot posture (Foot Posture Index), and balance (Biodex Balance Systems) were assessed. Balance assessments were performed on the dominant leg.Results: A regression analysis showed that 43.2% of the anterior- posterior (AP) stability index score explained the total variance, and the effects of height (p=0.006, B=-4.387, β=-1.974,SD=1.554), weight (p=0.001, B=0.068, β=4.550, SD=0.020), and BMI (p=0.003, B=-0.171, β=- 2.833, SD=0.056) found statistically significant. The regression analysis also revealed that 66.5% of the variance in the medial-lateral (ML) stability index score and age (p=0.026, B=0.003, β=0.173, SD=0.001) and weight (p=0...
Gender and limb effects on adult normative data for the Biodex Balance System
Kinesiology, 2022
Posturography normative data in healthy populations is crucial for several reasons including monitoring the independence issues related to activities of daily living (ADLs), fall and incapacity avoidance, and residual injury impairment. The Biodex Balance System requires updated normative data regarding healthy persons because of recent revisions to the Biodex Balance System. Further, this study aimed to determine and compare gender and limb performance of 161 adults aged 18-55 years (n = 80 males; n = 81 females). Assessments involved both static and dynamic stability tests such as double-leg and single-leg balance tests at platform stability which served as outcome measurements. Females performed significantly (p≤.05) better on double-leg static balance (p=.031), double-leg dynamic balance (p=.002), and single-leg dynamic balance on both the left (p=.003) and right legs (p=.013) when compared to males. The normative values and findings of this study not only enable the evaluation of individual performance regarding the balance of adults but also suggest the need to use gender-stratified normative data when using the Biodex Balance System to interpret double-and single-leg, static and dynamic balance test performance.
The influence of lower-limb dominance on postural balance
Sao Paulo Medical Journal, 2011
CONTEXT AND OBJECTIVE: Maintainance of postural balance requires detection of body movements, integration of sensory information in the central nervous system and an appropriate motor response. The purpose of this study was to evaluate whether lower-limb dominance has an influence on postural balance. DESIGN AND SETTING: This was a cross-sectional study conducted at Faculdade de Medicina da Universidade de São Paulo (FMUSP) and at Hospital do Coração (HCor). METHODS: Forty healthy sedentary males aged 20 to 40 years, without any injuries, were evaluated. A single-foot balance test was carried out using the Biodex Balance System equipment, comparing the dominant leg with the nondominant leg of the same individual. The instability protocols used were level 8 (more stable) and level 2 (less stable), and three instability indices were calculated: anteroposterior, mediolateral and general. RESULTS: The volunteers' mean age was 26 ± 5 years (range: 20-38), mean weight 72.3 ± 11 kg (ra...
Laterality of Static and Dynamic Balance Abilities during One-leg Standing
Lower human limbs may not show laterality, differing from preferential use of upper limbs, because both legs are generally used at the same time. This study examined laterality of static and dynamic balance abilities during one-leg standing. The subjects were 100 healthy male university students (age 19.6 ± 2.4 years，height 172.3 ± 6.2 cm，weight 64.8 ± 8.5 kg). All subjects were judged right-leg dominant based on a previous survey. They underwent static and dynamic balance tests with each lower limb. A total path length during one-leg standing on a fixed stabilometer for the static balance test and an omnidirectional stability index during one-leg standing on an unstable platform (DYJOC Board) for the dynamic balance test was each used as an evaluation parameter. The mean of two trials was used as a representative value in each test. Intraclass correlation coefficients (ICCs) in both balance tests were very high (ICC = 0.75-0.91). A non-significant difference between means of dominant and non-dominant legs was found in both tests; their correlations were significant and high (0.93 and 0.75). In addition, a correlation between dynamic and static balance tests in both legs was found be significant but low (0.21-0.25). In conclusion, the laterality is not found in the static and dynamic balance abilities during one-leg standing evaluated by the tests selected in this study, and the relation between both abilities is negligible size.
Physical Activity Review, 2019
Introduction: One from the important preconditions for optimal performance of all physical activities is a good quality of balance. Aim of Study: The study is focusing to find out the effect of pressure distribution beneath the foot on the balance and to compare the quality of balance in physically active and inactive young women. Material and Methods: Subjects of our study were two groups of healthy young women. A: physically active women (n=28; age 21.5 years; physical activity 8.8 hour/week), B: physically inactive (n=28; age 22,0 years; physical activity 1.3 hour/week). Three balance test we carried out: double-leg stance, eyes open (EO) and closed (EC) for 30 second, one-leg stance (right, left) for 10 second. Pressure walkway (FDM system, fi. Zebris) was used for data collection. Parameters: COPv: velocity of centre of pressure (mm/s), relative value of average pressure beneath the foot (%). Results: We found out that a physically active group of young women have significantly better results in all tests (p≤0.05). Both groups showed a similar tendency for significant deterioration of the results when elimination the support surface or the visual sensor in relation to the basic OE test. The differences in the distribution of pressures between the groups were significant in the M-L directions. Inactive women significantly more loaded the non-preferred leg and the rear part of the foot. Active women showed a more balanced stance in both directions, with a slight tendency to increase the loading on the front part of foot. Conclusion: It was confirmed that the group B has a partly worse characteristics of balance than physically active peers. The foot load strategy was less favourable for the group B; during EO. Only two interesting correlations were found in active women; between COPv and ratio of feet load. Remaining correlations to COPv were low.
Leg Dominance Effects on Postural Control When Performing Challenging Balance Exercises
Brain Sciences
Leg dominance reflects the preferential use of one leg over another and is typically attributed to asymmetries in the neural circuitry. Detecting leg dominance effects on motor behavior, particularly during balancing exercises, has proven difficult. The current study applied a principal component analysis (PCA) on kinematic data, to assess bilateral asymmetry on the coordinative structure (hypothesis H1) or on the control characteristics of specific movement components (hypothesis H2). Marker-based motion tracking was performed on 26 healthy adults (aged 25.3 ± 4.1 years), who stood unipedally on a multiaxial unstable board, in a randomized order, on their dominant and non-dominant leg. Leg dominance was defined as the kicking leg. PCA was performed to determine patterns of correlated segment movements (“principal movements” PMks). The control of each PMk was characterized by assessing its acceleration (second-time derivative). Results were inconclusive regarding a leg-dominance eff...
Symmetry of lower limb loading in healthy adults during normal and abnormal stance
Acta of bioengineering and biomechanics, 2017
PURPOSE The purpose of the research was twofold: (1) to describe the normal asymmetry in lower limb loading during a normal stance and during a stance with visual and vestibular disturbance relating to the lower limb dominance, (2) to assess relations of loading of both lower limbs with body weight and height (BMI) and leg functional dominance. METHODS The subjects of this study were 95 students. Settings of the two Kistler platforms were used to register the time series of the vertical component of the ground reaction force while the subject was standing (45 seconds) in a normal position and next with eyes covered with a band and head tilted back position with one leg placed on one platform and the other on the second platform. The symmetry index (SI) was used to describe the asymmetry of the left or right loading. RESULTS The greater loading of the left or right leg during standing was independent of the functional leg dominance. The distribution of left and right lower limb loadi...
Journal of athletic training, 2002
OBJECTIVE: To identify differences in postural control among healthy individuals with different architectural foot types. DESIGN AND SETTING: We compared postural control during single-leg stance in healthy individuals with cavus, rectus, and planus foot types in our athletic training research laboratory. SUBJECTS: Thirty healthy, young adults (15 men, 15 women; age, 21.9 +/- 2.0 years; mass, 71.6 +/- 16.7 kg; height, 168.4 +/- 13.6 cm) had their feet categorized based on rearfoot and forefoot alignment measures. The right and left feet of a subject could be classified into different categories, and each foot was treated as a subject. There were 19 cavus, 23 rectus, and 18 planus feet. MEASUREMENTS: Subjects performed three 10-second trials of single-leg stance on each leg with eyes open while standing on a force platform. Dependent measures were center-of-pressure (COP) excursion area and velocity. RESULTS: Subjects with cavus feet used significantly larger COP excursion areas than...
Assessing Static Postural Stability with Balance Error in Female Participants
lower limb muscle fatigue may impair the proprioceptive and kinesthetic properties of joints altering conscious joint awareness. the purpose of this study was to examine the effect of plantar flexor muscle fatigue on postural control. twenty-two female physical education students 21.00 ± 4.36 years old, with no history of injury in the last 6 months or pathology to either lower extremity volunteered to participate in this study. postural stability was measured using Bess; consisting of 6 conditions: double-leg stance, single-leg stance, and tandem stance which were performed on a firm surface and on a foam surface with the eyes closed. errors were counted during each 20-second trial. participants performed calf muscle fatiguing exercises on their dominant leg and used their other leg for control. their body sway was measured by them standing on one leg prior and following these fatiguing exercises. During the plantar flexor muscle fatigue protocol, the participants stood upright supporting on a raised surface with the front place of the sole on their dominate leg and were instructed to conduct as many concentric-eccentric ankle plantar flexor contractions