Greater physical activity of an aerobic nature ( categorized by a variety of methods ) was associated with higher functional status ( expressed by a host of outcome measures ) in older age .
For functional independence , moderate ( and high ) levels of physical activity appeared effective in conferring a reduced risk ( odds ratio ~0.5 ) of functional limitations or disability .
Limitation in higher level performance outcomes was reduced ( odds ratio ~0.5 ) with vigorous ( or high ) activity with an apparent dose-response of moderate through to high activity .
Exercise training interventions ( including aerobic and resistance ) of older adults showed improvement in physiological and functional measures , and suggestion of longer-term reduction in incidence of mobility disability .
A relatively high level of physical activity was related to better cognitive function and reduced risk of developing dementia ; however , there were mixed results of the effects of exercise interventions on cognitive function indices .
Conclusions There is a consistency of findings across studies and a range of outcome measures related to functional independence ; regular aerobic activity and short-term exercise programmes confer a reduced risk of functional limitations and disability in older age .
Although a precise characterization of a minimal or effective physical activity dose to maintain functional independence is difficult , it appears moderate to higher levels of activity are effective and there may be a threshold of at least moderate activity for significant outcomes
Background The purpose was to conduct systematic review s of the relationship between physical activity of healthy community-dwelling older ( > 65 years ) adults and outcomes of  functional limitations , disability , or loss of independence .
Functional and Neuromotor Performance in Older Adults: Effect of 12 Wks of Aerobic Exercise
Kalapotharakos VI , Michalopoulos M , Strimpakos N , Diamantopoulos K , Tokmakidis SP : Functional and neuromotor performance in older adults : Effect of 12 wks of aerobic exercise . Am J Phys Med Rehabil 2006;85:61–67 . Objective : There is little information regarding the effect of aerobic exercise on physical and neuromotor performance in older adults . The aim of this r and omized , controlled trial was to determine the effects of a 12-wk aerobic exercise program on functional and neuromotor performance in inactive healthy older adults . Design : A total of 22 inactive healthy older adults , aged 60–75 yrs , voluntarily participated in the study and were r and omly assigned to a progressively increased high-intensity aerobic exercise group ( n = 12 ) or to a control group ( n = 10 ) . The aerobic exercise group exercised three times per week for 12 wks on nonconsecutive days . Both groups were evaluated before and after the exercise period in the one-repetition maximum of knee extensors and flexors , 6-min walk distance , chair-rising time , and whole-body reaction time . Results : Multivariate analysis of variance repeated measures ( 2 × 2 ) revealed significant ( P < 0.05 ) time by group interaction for one-repetition maximum knee extension and flexion strength , 6-min walk distance , chair-rising time , and whole-body reaction time . For the aerobic exercise group , the following variables improved significantly ( P < 0.05 ) after the exercise period : the one-repetition maximum knee extensors ( 12 % ) and flexors ( 19 % ) muscle strength , 6-min walk distance ( 17 % ) , chair-rising time ( 8 % ) , and whole-body reaction time ( 20 % ) . No significant differences were observed in the control group . Conclusions : The results of the present study show that short-term progressively increased high-intensity aerobic exercise improved the physical and neuromotor performance in inactive healthy older adults . These findings suggest that the participation in a progressively increased high-intensity aerobic exercise program may improve mobility and ability to carry out activities of daily living in older adults
Greater physical activity of an aerobic nature ( categorized by a variety of methods ) was associated with higher functional status ( expressed by a host of outcome measures ) in older age .
For functional independence , moderate ( and high ) levels of physical activity appeared effective in conferring a reduced risk ( odds ratio ~0.5 ) of functional limitations or disability .
Limitation in higher level performance outcomes was reduced ( odds ratio ~0.5 ) with vigorous ( or high ) activity with an apparent dose-response of moderate through to high activity .
Exercise training interventions ( including aerobic and resistance ) of older adults showed improvement in physiological and functional measures , and suggestion of longer-term reduction in incidence of mobility disability .
A relatively high level of physical activity was related to better cognitive function and reduced risk of developing dementia ; however , there were mixed results of the effects of exercise interventions on cognitive function indices .
Conclusions There is a consistency of findings across studies and a range of outcome measures related to functional independence ; regular aerobic activity and short-term exercise programmes confer a reduced risk of functional limitations and disability in older age .
Although a precise characterization of a minimal or effective physical activity dose to maintain functional independence is difficult , it appears moderate to higher levels of activity are effective and there may be a threshold of at least moderate activity for significant outcomes
Background The purpose was to conduct systematic review s of the relationship between physical activity of healthy community-dwelling older ( > 65 years ) adults and outcomes of  functional limitations , disability , or loss of independence .