High-intensity Interval Training Combined with Muscle-strength Training in Older Women

Women generally live longer than men but often experience a faster muscle mass loss due to inactivity, which can lead to weakness and disability. Despite these risks, women, particularly older women, are less active than men. In England, less than one-third of women engage in sufficient aerobic activity, and less than 5% do enough muscle strength training. Common reasons for not exercising include lack of time and enjoyment. High-intensity interval training (HIIT) is an efficient and effective way to exercise that many women find more enjoyable than longer workouts. HIIT has been shown to be effective in older women, helping them improve their fitness with less time commitment. Because HIIT is time-efficient, it can be combined with muscle strength training without significantly increasing the duration of the exercise session, which may lead to even better fitness results. This study will assess how practical it is for older women to do HIIT and strength exercise combined training. It will also investigate whether this combined approach can improve overall fitness, muscle strength, aerobic fitness, and quality of life more than HIIT alone.