Strength training improves fall-related gait kinematics in the elderly: a randomized controlled trial

Area of Science:

• Gerontology
• Biomechanics
• Exercise Physiology

Background:

• Falls pose a significant risk to the elderly population.
• Improving muscle strength is a proposed strategy to mitigate fall risk.
• The impact of strength improvements on gait patterns in older adults remains understudied.

Purpose of the Study:

• To investigate the effects of a 12-week lower limb strength training program on gait kinematics in elderly women.
• To identify gait parameters associated with fall risk that are influenced by strength training.
• To compare gait changes in an experimental group undergoing strength training versus a control group.

Main Methods:

• Twenty-seven elderly women were randomized into an experimental (strength training) or control group.
• The experimental group engaged in lower limb strength training for 12 weeks, 3 days/week, with progressive overload.
• Gait kinematics and maximal voluntary isometric contractions were assessed pre- and post-training.

Main Results:

• Strength training led to significant improvements in gait speed, stride length, cadence, and toe clearance.
• The increase in one-repetition maximum was a strong predictor of gait parameter changes.
• Strength training effectively reversed age-related gait alterations, bringing parameters closer to those of young adults.

Conclusions:

• Lower limb strength training enhances fall-related gait kinematic parameters in elderly women.
• Strength training programs are recommended for older women to modify gait patterns towards those of younger adults.
• This intervention offers a viable strategy to improve mobility and reduce fall risk in the elderly.