evaluating-postural-control-lower-extremity-muscle-activation

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability

Computerized dynamic posturography (CDP) is an objective technique for the evaluation of postural stability under static and dynamic conditions and ...

evaluating-the-function-of-the-foot-core-system-in-the-elderly

Evaluating the Function of the Foot Core System in the Elderly

As a complex structure to link the body and the ground, the foot contributes to postural control in human static and dynamic activities. The foot core is ...

Shanghai University of Sport

Badminton players often perform powerful and long-distance lunges during such competitive matches. The objective of this study is to compare the plantar loads of three one-step maximum forward lunges in badminton.

Characteristics of Plantar Loads in Maximum Forward Lunge Tasks in Badminton.

This study aims to investigate the effects of adding whole-body vibration (WBV) exercise to squat training (ST) on the physical function and muscle strength of patients with knee osteoarthritis (KOA).

Effect of adding whole-body vibration training to squat training on physical function and muscle strength in individuals with knee osteoarthritis.

The study aimed to investigate the effects of 24 weeks Taichi intervention on knee and ankle proprioception amongst individuals with knee osteoarthritis (KOA). Ninety-two patients with KOA were included in the current study, involving 52 participants in the intervention group and 40 participants in the control group. The intervention group performed Taichi exercise for 24 weeks, the control group accepted the health education lectures. The main outcome of this study was the proprioception of the knee and ankle which was measured by an electric-driven movable frame. Between- and within-group differences were evaluated through the repeated-measurement ANOVA. For the Taichi group, the differences in the changes in ankle proprioception were significant on ankle plantarflexion (p = 0.03), ankle dorsiflexion (p = 0.043), ankle varus (p = 0.019) and knee flexion (p = 0.01) between the baseline and post-test measures. Twenty-four weeks Taichi exercise may improve the ankle and knee proprioception of patients with KOA.

Effects of Taichi exercise on knee and ankle proprioception among individuals with knee osteoarthritis.

Twenty-four healthy adults, including 12 females and 12 males, participated in the study. Each female participant completed three trials in three different phases of one menstrual cycle, which included follicular, ovulatory, and luteal phases. The study aimed to investigate whether there is any difference in joint kinetic sense, neuromuscular coordination, and isokinetic muscle strength (a) between healthy males and females at different phases of the menstrual cycle and (b) between females at different phases of the menstrual cycle. The outcome measures included the number of jumps in the square-hop test and ankle and knee proprioception, which were assessed by an electric-driven movable frame rotated at 0.4 deg/s and isokinetic muscle strength measured by a computerized dynamometer (Biodex). For the square-hop test (p = .006), ankle dorsiflexion/plantar flexion (p < .05), knee flexion/extension (p < .05), the relative peak torque of the isokinetic muscle strength at the 60° and 180° knee flexion/extension (p < .001), and the 30° and 120° ankle plantar flexion/dorsiflexion (p < .05) between females and males showed significant differences. For the females at different phases of the menstrual cycle, significant differences were found on ankle dorsiflexion (p = .003), plantar flexion (p = .023), knee extension (p = .029), the square-hop test (p = .036), and relative peak torque of isokinetic muscle strength at 180° knee flexion (p = .029). This study demonstrated that there are sex differences in lower limb proprioception and mechanical function. Females at ovulatory and luteal phases have better lower limb proprioception than at the follicular phase.

Sex Differences in Lower Limb Proprioception and Mechanical Function Among Healthy Adults.

Foot strike patterns influence the running efficiency and may be an injury risk. However, differences in the leg stiffness between runners with habitual forefoot (hFFS) and habitual rearfoot (hRFS) strike patterns remain unclear. This study aimed at determining the differences in the stiffness, associated loading rate, and kinematic performance between runners with hFFS and hRFS during running. Kinematic and kinetic data were collected amongst 39 runners with hFFS and 39 runners with hRFS running at speed of 3.3 m/s, leg stiffness (Kleg), and vertical stiffness (Kvert), and impact loads were calculated. Results found that runners with hFFS had greater Kleg ( = 0.010, Cohen's  = 0.60), greater peak vertical ground reaction force (vGRF) ( = 0.040, Cohen's  = 0.47), shorter contact time(  ) ( < 0.001, Cohen's  = 0.85), and smaller maximum leg compression (Δ  ( = 0.002, Cohen's  = 0.72) compared with their hRFS counterparts. Runners with hFFS had lower impact peak (IP) ( < 0.001, Cohen's  = 1.65), vertical average loading rate (VALR) ( < 0.001, Cohen's  = 1.20), and vertical instantaneous loading rate (VILR) ( < 0.001, Cohen's  = 1.14) compared with runners with hRFS. Runners with hFFS landed with a plantar flexed ankle, whereas runners with hRFS landed with a dorsiflexed ankle ( < 0.001, Cohen's  = 3.35). Runners with hFFS also exhibited more flexed hip ( = 0.020, Cohen's  = 0.61) and knee ( < 0.001, Cohen's  = 1.15) than runners with hRFS at initial contact. These results might indicate that runners with hFFS were associated with better running economy through the transmission of elastic energy.

Leg Stiffness and Vertical Stiffness of Habitual Forefoot and Rearfoot Strikers during Running.

To investigate effects of taping techniques on arch deformation in adults with pes planus.

Effects of taping techniques on arch deformation in adults with pes planus: A meta-analysis.

Falls are one of the most common accidents in older adults, often leading to injury, disability and quality-of-life declines. Foot core function contributes to postural stability in most static postures and dynamic activities. As efficient foot core training, the intrinsic-foot-muscle exercise has been proposed to improve postural control. However, the effects of the exercise on postural stability in the elderly remain unclear. Therefore, this study attempts to investigate the effect of 12-week intrinsic-foot-muscle exercise on postural stability in older adults with fall risk.

Effects of intrinsic-foot-muscle exercise combined with the lower extremity resistance training on postural stability in older adults with fall risk: study protocol for a randomised controlled trial.

Xiaoyue Hu

School of Kinesiology,
Shanghai Frontiers Science Research Base of Exercise and Metabolic Health

Shanghai University of Sport

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability

Evaluating the Function of the Foot Core System in the Elderly

Xiaoyue Hu

School of Kinesiology,Shanghai Frontiers Science Research Base of Exercise and Metabolic Health

Shanghai University of Sport

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability

Evaluating the Function of the Foot Core System in the Elderly

School of Kinesiology,
Shanghai Frontiers Science Research Base of Exercise and Metabolic Health