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Open AccessArticle

Accelerometer-Measured Physical Activity in Children and Adolescents at Altitudes over 3500 Meters: A Cross-Sectional Study in Tibet

1
National Physical Fitness Research Center, China Institute of Sport Science, Beijing 100061, China
2
Tibet Institute of Sport Science, Lhasa 850007, China
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2019, 16(5), 686; https://doi.org/10.3390/ijerph16050686
Received: 16 December 2018 / Revised: 20 February 2019 / Accepted: 22 February 2019 / Published: 26 February 2019
(This article belongs to the Section Health Behavior, Chronic Disease and Health Promotion)
There is a scarcity of studies on the physical activity (PA) of children and adolescents who live at high altitudes. This study aimed to objectively assess PA of children and adolescents living in the Tibet at altitudes over 3500 m and to examine its difference by ethnicity, gender, age/grade, and body weight status groups. A sample of 397 students aged 9–18 years were recruited from 7 schools in Lhasa, Tibet. PA was measured using accelerometers (ActiGraph GT3X) for seven consecutive days and moderate to vigorous PA (MVPA) was identified using the Evenson (2008) cut-points. Participant MVPA was 62.3 min/day, with 65.5 min/day during weekdays and 54.1 min/day on weekends. Indigenous Tibetans were more active than Hans, and boys had more MVPA than girls. Age had a significantly weak negative correlation with MVPA. There was no significant difference in MVPA between the non-overweight and overweight/obese groups. Overall, only 9.1% (13.8% in boys and 4.5% in girls) accumulated at least 60 min of MVPA per day. Compared to their counterparts in other regions, the daily MVPA of children and adolescents living on the Tibetan Plateau at altitudes over 3500 m was relatively high. However, the proportion of meeting the WHO’s PA recommendations was extremely low. View Full-Text
Keywords: physical activity; children; adolescents; plateau; accelerometer; Tibet physical activity; children; adolescents; plateau; accelerometer; Tibet
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Nie, M.-J.; Fan, C.-Q.; Sun, R.-Z.; Wang, J.-J.; Feng, Q.; Zhang, Y.-F.; Yao, Z.; Wang, M. Accelerometer-Measured Physical Activity in Children and Adolescents at Altitudes over 3500 Meters: A Cross-Sectional Study in Tibet. Int. J. Environ. Res. Public Health 2019, 16, 686.

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