研究背景:過去有關運動與睡眠品質之研究大部分為陸上運動.本研究擬了解老年人水中運動對睡眠品質之影響。 研究方法:50位平均63.5歲老年人隨機分為控制組與運動組。運動組接受8週水中運動,每週2次,每次1小時。控制組維持平日作息。匹茲保睡眠量表(PSQI)用來測量睡眠品質,受試者並填寫睡眠日誌,記錄總睡眠時間與睡眠潛伏期。最後44人完成本研究(介入組21人控制組23人)。混合設計 ANOVAs 用來分析運動介入後組間與組內之差異。 研究結果:結果發現前測之相關人口統計變項以及相關結果變項均未達顯著。PSQI分數與睡眠日誌紀錄之總睡眠時間、睡眠潛伏期之主要效果均達顯著 (p= .024, .020, and.007, respectively).；睡眠日誌紀錄之總睡眠時間與睡眠潛伏期，時間與組別交互作用亦達顯著 (p= .016, and .001, respectively)。結果顯示，在水中運動介入後，運動組比控制組顯著增加總睡眠時間，而其睡眠潛伏期顯著減少 (p= .006,and p= <.001, respectively)。
Background: Studies on the relationship between exercise and sleep quality have mostly focused on land-based exercise. This study was designed to examine the effects of water-based exercise on sleep quality among older adults. Methods: Fifty older adults (mean age=63.5) were randomized to intervention and control groups. The intervention group received an 8-week water-based exercise with twice a week for one hour. The control group was encouraged to maintain their daily life as usual without any instructions. Pittsburgh Sleep Quality Index (PSQI) was used to measure sleep quality. Participants kept a sleep diary for one week on total sleep time (TST) and sleep latency. Forty-four participants (intervention: 21, control: 23) completed the study. Mixed-design ANOVAs for repeated measures were conducted for outcome variables (PSQI, TST, and sleep latency) to examine changes across time and between groups, and for the interactions between time and group. Results: No significant difference between groups for all outcome variables at baseline. The main effects of group on PSQI score, TST and sleep latency were all significant (p= .024, .020, and .007, respectively). There were also significant Group-Time interactions on TST and sleep latency (p= .016, and .001, respectively). After the intervention, the exercise group had less sleep latency, and more TST than the control group (p= .006 and p= <.001, respectively). Conclusions: An 8-week aquatic exercise reduced sleep latency and increased total sleep time among older adults.