Abstract
Previous research suggests that water exercise improves the activities of daily living (ADL) ability of the frail elderly, but the specific frequency and intensity of such programs is unclear. This study aims at comparing the effects of once- and twice-weekly water exercise on the ADL ability of frail elderly receiving nursing care for 2 years. The design is a prospective randomized longitudinal study. Participants were assigned to two different exercise groups (Group 1 and Group 2). Group 1 participated in a 60-min exercise session once a week, for 2 years, while Group 2 attended the session twice a week. Exercise sessions were divided into a 10-min warm-up on land and 50 min of exercise in water. The 50-min water exercise program consisted of 20 min walking, 10 min ADL exercise, 10 min stretching and strength exercises, and 10 min relaxation in water. ADL ability and lower muscle strength were measured before the beginning of exercise and 6 months, 1 year, and 2 years after the program had started. Significant group differences occurred for bathing transfer and stair climbing at the 2-year measurement. These results suggested that at least twice-weekly water exercise was necessary to maintain the ADL ability and KEX of the frail elderly during the 1-year water exercise period and for one additional year afterward.
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