Seasonal Changes in Amount and Patterns of Physical Activity in Women
Seasonal Changes in Amount and Patterns of Physical Activity in Women
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DOI：
10.1123/jpah.6.2.252
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发表时间：
2009-03-01
影响因子：
3.1
通讯作者：
Chen, Kong Y.
中科院分区：
文献类型：
--
作者：
Buchowski, Maciej S.;Choi, Leena;Chen, Kong Y.
背景：包括季节变化在内的环境因素对于指导体育活动（PA）计划以实现或维持体重减轻非常重要。目的是确定妇女自由生活PA的数量和模式的季节性变化。研究方法：来自大都会纳什维尔，田纳西州和周边县的57名健康女性（年龄：20至54岁，体重指数：17至48 kg/m2）在1年内的3个季节中使用加速计连续7天测量PA。在全室间接热量计中测量PA计数和能量消耗（EE），并用于模拟加速度计输出，并计算每日EE和PA强度（表示为代谢当量（MET））。结果如下：PA在冬季低于夏季（131 +/- 45 vs. 144 +/- 54 x 10（3）计数/天; P = .025）和春季/秋季（143 +/- 48 x 10（3）计数/天; P = .027）。在周末，PA在冬季比夏季低22，652计数/天（P = .008）。在冬季，女性花在久坐活动上的时间比夏季多（差异35分钟/天; P = 0.007），而轻度活动（差异-29分钟/天，P = 0.018）和中度或剧烈活动（差异-6分钟/天，P = 0.051）的时间较少。结论：生活在美国东南部的女性在冬季的PA水平低于夏季和春季/秋季，这种影响的程度在周末比工作日更大。
Background: Environmental factors including seasonal changes are important to guide physical activity (PA) programs to achieve or sustain weight loss. The goal was to determine seasonal variability in the amount and patterns of free-living PA in women. Methods: PA was measured in 57 healthy women from metropolitan Nashville, TN, and surrounding counties (age: 20 to 54 years, body mass index: 17 to 48 kg/m(2)) using an accelerometer for 7 consecutive days during 3 seasons within 1 year. PA counts and energy expenditure (EE) were measured in a whole-room indirect calorimeter and used to model accelerometer output and to calculate daily EE and intensity of PA expressed as metabolic equivalents (METs). Results: PA was lower in winter than in summer (131 +/- 45 vs. 144 +/- 54 x 10(3) counts/d; P = .025) and in spring/fall (143 +/- 48 x 10(3) counts/d; P = .027). On weekends, PA was lower in winter than in summer by 22,652 counts/d (P = .008). In winter, women spent more time in sedentary activities than in summer (difference 35 min/d; P = .007) and less time in light activities (difference -29 min/d, P = .018) and moderate or vigorous activities (difference -6 min/d, P = .051). Conclusions: Women living in the southeastern United States had lower PA levels in winter compared with summer and spring/fall, and the magnitude of this effect was greater on weekends than weekdays.