Effects of age and acute muscle fatigue on reactive postural control in healthy adults

Clinical Biomechanics
Evan V PapaLeland E Dibble

Abstract

Falls can cause moderate to severe injuries such as hip fractures and head trauma in older adults. While declines in muscle strength and sensory function contribute to increased falls in older adults, skeletal muscle fatigue is often overlooked as an additional contributor to fall risk. The purpose of this investigation was to examine the effects of acute lower extremity muscle fatigue and age on reactive postural control in healthy adults. A sample of 16 individuals participated in this study (8 healthy older adults and 8 healthy young persons). Whole body kinematic and kinetic data were collected during anterior and posterior reproducible fall tests before (T0) and immediately after (T1) eccentric muscle fatiguing exercise, as well as after 15-min (T15) and 30-min (T30) of rest. Lower extremity joint kinematics of the stepping limb during the support (landing) phase of the anterior fall were significantly altered by the presence of acute muscle fatigue. Step velocity was significantly decreased during the anterior falls. Statistically significant main effects of age were found for step length in both fall directions. Effect sizes for all outcomes were small. No statistically significant interaction effects were found. Muscle ...Continue Reading

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Citations

Dec 27, 2019·Journal of Athletic Training·Kenneth E GamesJoEllen M Sefton
Dec 18, 2019·Experimental Brain Research·Andrew Philip LavenderKemal Sitki Türker
Feb 6, 2017·Current Geriatrics Reports·Evan V PapaNicoleta Bugnariu
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Aug 14, 2020·Archives of Gerontology and Geriatrics·Pâmela Precinotto MartinsDaniela Cristina Carvalho de Abreu
Jun 29, 2021·NeuroRehabilitation·Evan V PapaNicoleta Bugnariu
Oct 22, 2021·Frontiers in Nutrition·Eleanor Jayne HayesEmma Stevenson

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