The purpose of the present investigation was to examine the amount, frequency and duration of daily physical activity in young to middle-aged Japanese women. A total of 70 healthy Japanese women, aged from 19 to 70 years, participated in the present investigation. All subjects wore an activity monitor (Lifecorder, Kenz, Japan) over a seven-day period, in order to determine the amount and frequency of light, moderate, and vigorous intensity physical activity (LPA, MPA, VPA) and the time duration of the physical activity (4sec to 1800sec). Furthermore, the sum of the MPA and the VPA was defin...