Physical activity tends to decline in older age, despite being key to health and longevity. Previous investigations have focused on demographic and individual factors that predict sustained physical activity.

中文翻译：

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与体力活动匹配的对照组相比，运动或锻炼组的成员身份可预测老年人的持续体力活动和长寿。

尽管身体活动是健康和长寿的关键，但随着年龄的增长，身体活动往往会减少。以前的调查集中在预测持续身体活动的人口统计和个人因素上。