RESEARCH ON PHYSICAL FITNESS LEVEL NECESSARY FOR INDFEPENDENT LIFE IN ELDERLY PEOPLE

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The purpose of this study was to describe the relationships among energy expenditure in daily living, leg extensor power, and lactate threshold (LT) to clear the physical fitness level necessary for independent life in older people. The subjects of this study were 25 volunteers (6 maled and 19 females).healthy and living independently. Their mean age was 67 years (range from 60 to 79 years).(1) Relationship between daily physical activity level and physical fitnessIt is proved that the activity level of dily living in elderly people is low and most of walking of dily living are intermittent. Daily energy expenditure correlated positively with LT and leg extensor power. It is concluded that elderly people who maintain a physically active life-style do not experience the decline in aerobic work capacity and muscle function (leg extensor power) in elderly people.(2) Effect of daily physical activity on physical fitnessWe examined the change of led extensor power, LT and pedometer score (number of steps) to ascertain the change of physical fitness which are influenced by a change of physiological function by ageing or daily physical activity. Leg extansor power, LT and pedometer score were measured in healthy elderly proples after one or two years. There were no significant change of leg extensor power and LT.But the decrease in number of steps correlated positively with LT.It was suggested that physical fitness is tends to be more related to physical activity level than to aging on elderly people below 75 years of age.