This paper made questionnaires about 268 old people who take partin swimming exercise in winter in both Dalian and Huhehot cities,and then analysed systematically the data acquired.

• 通过对大连、呼和浩特两个城市的268名参加冬泳锻炼老年人的问卷调查,对所得数据进行了系统的分析。