CONCLUSION On the basis of systematic review of relevant literature , it appears that muscle fatigue induces clear deteriorations in reactive postural control .
BACKGROUND Falls are the leading cause of traumatic brain injury and fractures and the No. 1 cause of emergency department visits by older adults .
Although 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 .
In an effort to increase awareness of the detrimental effects of skeletal muscle fatigue on postural control , we sought to systematic ally review research studies examining this issue .
PURPOSE The specific purpose of this review was to provide a detailed assessment of how anticipatory and reactive postural control tasks are influenced by  acute muscle fatigue in healthy older individuals .
Effect of high-intensity strength-training on functional measures of balance ability in balance-impaired older adults.
OBJECTIVE The aim of this study was to evaluate the effect of a 10-week , high-intensity strength-training program targeting key lower extremity muscles for the purpose of improving postural control in balance-impaired older adults . METHODS A quasi-experimental , delayed entry controlled design was used to evaluate balance ability in balance-impaired older adults after participation in 10 weeks of high-intensity strength training focused on the quadriceps , hamstrings , tibialis anterior , and gastrocnemius muscles . Participants were evaluated using vali date d clinical measures of functional balance ability : the Berg Balance Scale , the Timed Up and Go , and the Activities-Specific Balance Confidence Scale . RESULTS After strength training , the exercisers were significantly stronger than the control subjects . They improved significantly on the Berg Balance Scale ( P = .030 ) from a mean score of 48.8 + /- 2.4 of 56 before training to 51.2 + /- 4.3 of 56 after training . The Timed Up and Go ( P = .045 ) and the Activities-Specific Balance Confidence Scale ( P = .038 ) also improved significantly in the experimental group . These changes are associated with a decrease in fall risk . CONCLUSIONS High-intensity strength training can safely and effectively strengthen lower extremity muscles in balance-impaired older adults , result ing in significant improvements in functional balance ability and decreased fall risk
CONCLUSION On the basis of systematic review of relevant literature , it appears that muscle fatigue induces clear deteriorations in reactive postural control .
BACKGROUND Falls are the leading cause of traumatic brain injury and fractures and the No. 1 cause of emergency department visits by older adults .
Although 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 .
In an effort to increase awareness of the detrimental effects of skeletal muscle fatigue on postural control , we sought to systematic ally review research studies examining this issue .
PURPOSE The specific purpose of this review was to provide a detailed assessment of how anticipatory and reactive postural control tasks are influenced by  acute muscle fatigue in healthy older individuals .