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BACKGROUND Previous investigators have reported that maximal power increases during growth and decreases with aging. These age-related differences have been reported to persist even when power is scaled to body mass or muscle size. We hypothesized that age-related differences in maximal power were primarily related to differences in muscle size and(More)
Isometric impulse frequencies associated with active tremor and force regulation were examined in 10 patients with idiopathic Parkinson's disease (PD) and in 10 older adults (OAs) who performed an isometric tracing task. The authors decoupled and analyzed the data to determine whether PD-related tremor in the thumb and in the index finger during isometric(More)
The SRT, DRT, and MT of older men (OA) who have experienced a life style of chronic physical activity were compared to those of nonactive men of similar age (ONA), and also to active (YA) and nonactive young men (YNA). Although activity level and age were significant factors, most of the activity level-by-age interaction in all but DRT was attributed to the(More)
The robustness of a relationship among physical fitness, psychomotor speed, and aging is discussed by reviewing the descriptive and correlational evidence provided by studies from several different research areas. These areas are those that relate psychomotor speed to (a) athletic status, (b) physical fitness status, (c) physical conditioning training(More)
OBJECTIVES To determine the long-term effects of three strength and balance exercise interventions on physical performance, fall-related psychological outcomes, and falls in older people. DESIGN A single-blinded, four-group, randomized controlled trial. SETTING Community, Germany. PARTICIPANTS Community-dwelling adults aged 70 to 90 who had fallen in(More)
The latency and consistency of simple reaction time, choice reaction time, and movement time of older men who chronically run or participate in racket sports were compared to those of nonactive men of similar age and also to young men of similar characteristics (young runners, young racketsportsmen, and young nonactive men). The findings of Spirduso's(More)
Thirty male Sprague-Dawley rats 100 days of age were divided into three groups: interval trained, endurance trained, and pair-weighted controls. Both trained groups ran up to one hour per day, 6 days per week for 12 weeks. The interval trained group ran up to 20 repeat intervals at 54 meters per minute for 30 seconds, while the endurance trained group ran(More)
PURPOSE The purpose of this study was to determine if exercise operates in a dose-response fashion to influence well-being and to postpone dependency. METHODS A computer-assisted search was made by using the following key words: resistance training, strength training, function, exercise, elderly, quality of life, frailty, physical activity, independence,(More)
We have previously shown that endurance training is associated with higher binding of [3H]spiperone to striatal D2 dopamine (DA) receptors of presenescent (21 months old) rats. In the present study we investigated the effects of 6 months of endurance training of young adults on the relationship between steady-state levels of DA and its metabolites in(More)