Walking is a fundamental activity, but recent research reveals that how we walk—specifically the variability in our step lengths—can significantly impact our energy expenditure. A study from the Department of Kinesiology at University of Massachusetts (Amherst) involving 18 young adults demonstrated that increased step length variability raises the metabolic cost of walking. Participants who varied their step length by 10% used more energy than those with consistent steps.
While high gait variability is often seen in older adults and individuals with neurological conditions, leading to greater fatigue, it also presents potential exercise benefits. Controlled increases in gait variability could serve as a form of resistance training for the body. By intentionally incorporating variability into walking routines, individuals might enhance their cardiovascular fitness and muscular endurance due to the higher energy demands.
Moreover, exercises designed to manage and improve gait consistency could help reduce overall energy expenditure during daily activities, making movement more efficient and less tiring. This dual approach—using variability as a training tool while working towards consistency—could optimize physical health. Thus, understanding and manipulating gait variability offers a promising avenue for enhancing fitness and mobility, particularly in populations prone to higher gait irregularities.
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