期刊
JOURNAL OF SPORTS SCIENCES
卷 36, 期 24, 页码 2809-2817出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/02640414.2018.1474537
关键词
Sedentary behaviour; breaks in sedentary time; bouts in sedentary time; children; adults
资金
- Fundacao para a Ciencia e Tecnologia [SFRH/BPD/115977/2016, SFRH/BPD/92462/2013, SFRH/BD/85742/2012]
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/115977/2016, SFRH/BD/85742/2012] Funding Source: FCT
We aimed to describe ST and its patterns on a national level. A hip-worn accelerometer (ActiGraph GT1M) was used to collect data during waking hours from 4575 Portuguese' participants from 2007-2009 (2683 females) aged 10-102 years old. Data was presented by sex, in 5-years age intervals, and by adolescents (n=2833), adults (n=1122), and older adults (n=620). Lambda-mu-sigma (LMS) smoothed percentile curves were estimated. Girls, women, and older women spent 61, 57, and 64% of wear time in ST, respectively. In males, ST represented 57, 60, and 62% of wear time respectively for boys, men, and older men. Comparing to other age groups, older adults spent a larger amount of ST in bouts >= 30-min (women: 33%, men: 39% of total ST). The number of breaks/ST hour were: 10.6 in girls, 11.7 in women, and 9.6 in older women. In males, the number of breaks/ST hour were: 11.2, 10.5, and 8.5 for boys, men, and older men. In conclusion, ST was not consistently higher at older ages. Instead, we found that the potential critical moments in which ST may be higher are during adolescence and in the transition from adulthood into older adulthood, which represents critical periods for interventions.
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