Produção Nacional
Revisado por pares
OLDER PEOPLE INVOLVED IN PHYSICAL ACTIVITY BENEFIT FROM WATER EXERCISE, SHOWING LONGER TOTAL SLEEP TIME
2006; Wiley; Volume: 54; Issue: 4 Linguagem: Inglês
10.1111/j.1532-5415.2006.00668_12.x
ISSN1532-5415
AutoresKatia L. F. G. Alencar, Luciane Bizari Coin de Carvalho, Lucila Bizari Fernandes do Prado, Ana Lucia V. Vantini, Valdirene C. Vieira, Ana Paula N. Cardoso, Jean P. Alencar, Ângela Tavares Paes, Carlos A. Peres, Gilmar Fernandes do Prado,
Tópico(s)Physical Activity and Health
ResumoTo the Editor: Various studies have indicated that daily physical exercise improves the quality and efficiency of sleep in the general population.1–3 The objective of the present study was to analyze the effect of water exercise, weight training, and aerobic exercise on total sleep time (TST) in individuals performing regular physical activity. Ninety-five individuals (76 women) aged 18 and older, participating in strength training (35 subjects), water exercise (37 subjects), and aerobic exercise (23 subjects) were studied (Table 1). Subjects practicing two physical activities at the same time were excluded. The subjects received a sleep diary to be kept for 4 weeks. Analysis of variance was performed to analyze TST related to age and sleep latency, and linear regression to identify the interaction for TST. Chi-square was performed for time of the day, time of practicing, time of activity in each session, times per week, time to go to sleep, and time to wake up. Eighty-one percent of the subjects in the water exercise group, 40% of the strength training group (P=.008), and 22% of the aerobic exercise group (P<.001) exercised for up to 6 months. Eighty-one percent of the water exercise group, 20% of the strength training group, and 26% of the aerobic exercise group (P<.05) exercised for less than 60 minutes per day). Sixty-five percent of the subjects in the water exercise group, 43% of the aerobic exercise group (P=.02), and 57% of the strength training group exercised in the morning; 53% of the aerobic exercise group and 20% of the strength training group exercised in the evening (P=.08). Eighty-six percent of the water exercise group, 23% of the strength training group, and 30% of the aerobic exercise group exercised three times per week (P<.05). Seventy-seven percent of the strength training group, 70% of the aerobic exercise group, and 13.5% of the water exercise group (P<.05) exercised more than three times per week (P=.7). Seventy-three percent of the subjects in the water exercise group, 46% of the strength training group (P=.03), and 35% of the aerobic exercise group (P=.008) went to bed between 10 p.m. and 11 p.m. Thirty-seven percent of the subjects in the strength training group and 35% of the aerobic exercise group (P=.9) and 14% of the water exercise group (P<.05) went to sleep later (after midnight). Time in bed was 507 minutes for the water exercise group, 505 minutes for the strength training group (P=.9), and 462 minutes for the aerobic exercise group (P<.05). Subjects in the water exercise group had 476 minutes of TST, the strength training group had 460 minutes, and the aerobic exercise groups had 427 minutes (P=.05; Table 1); the water exercise group had 49 minutes more of TST than the aerobic exercise group (P=.01) and 16 minutes longer than the strength training group (P=.4). Interaction between TST and age was observed. The older subjects in the water exercise group had longer TST (P=.02), but the older subjects in the aerobic exercise group had shorter TST (P=.03). An interaction was observed between TST and time of activity. The shorter the time that the subjects had been performing water exercise, the longer the TST they had (<6 months=496 minutes; ≥6 months=398 minutes; P=.04). In the water exercise group, a trend to interaction was observed between TST and length of practice session. The subjects who exercised for less than 60 minutes per session had longer TST (493 minutes; P=.07). In the strength training group, the subjects who exercised for more than 90 minutes per session had shorter TST (433 minutes; P=.03). Water exercise seems to promote sleep. In the present study, although subjects practicing water exercise were approximately 25 years older, they slept more than individuals performing strength training and aerobic exercise.4–7 In addition to a probable direct effect of physical activity, especially water exercise, on the sleep of the subjects studied here, the criterion of including subjects who regularly practice physical activity might have contributed to the selection of a group concerned about health and willing to follow healthy habits, conditions important for adequate and efficient sleep.5,8 The subjects in the water exercise group went to bed earlier, a fact possibly associated with the older age of this group, and the possibility that this population, which opted a priori for physical activity, followed more regular life habits cannot be excluded.2,4,5,8 Financial Disclosure: None. Author Contributions: Katia L. F. G. Alencar: concept and design, acquisition of subjects and/or data, preparation of manuscript. Luciane B. C. Carvalho and Gilmar F. Prado: concept and design, preparation of manuscript. Lucila F. Prado and Jean P. Alencar: preparation of manuscript. Ana Lucia V. Vantini, Valdirene C. Vieira, and Ana Paula N. Cardoso: acquisition of subjects and/or data. Angela T. Paes and Clovis A. Peres: analysis and interpretation of data. Sponsor's Role: None.
Referência(s)