PTOtherJournal of physical therapy science2017

Gender differences in joint torque focused on hip internal and external rotation during a change in direction while walking.

Wataru Yamazaki, Yoshitsugu Tanino

PMID 29643595

WHAT IT FOUND

During a crossover step while walking, females had higher right hip external and internal rotation torques and males had higher ankle plantar flexion torques.

No gender differences appeared for walking or side step. These were measurements in healthy young adults.

Key findings

01Significant gender differences in joint torque appeared during the crossover step, but not during walking or the side step.

02During the crossover step, females had significantly higher right hip external and internal rotation torques, and males had significantly higher left and right ankle plantar flexion torques.

03Pelvis width alone did not correlate with the torques, but the pelvis-to-shoulder ratio did.

STILL TO COME

How it was doneWhat they foundWhat it means for PTs

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What it does not show

The participants were healthy young adults, so the results do not show what happens in older patients or people with hip, knee, or ankle problems. The study measured joint torque in a laboratory task and did not test a treatment or measure falls. The sample was ten males and ten females. Upper-body momentum was not calculated, so the relationship between upper-body rotation and pelvic rotation was not clarified. Pelvis width alone did not correlate with the torques, and the paper did not show that the pelvis-to-shoulder ratio caused the torque differences. The paper does not describe randomisation, blinding, or dropout handling.

The easy way to misread this

Do not conclude that hip rotator or ankle plantar flexion training will improve turning or reduce falls. The study measured healthy young adults in a laboratory task, reported torque differences during a crossover step, and did not test any treatment or falls outcome.

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