Abstract
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.
Highlights
Regular physical activity (PA) has been demonstrated to affect weight control [1], musculoskeletal health, cardiovascular risks [2], motor skill development [3], cognitive ability [4], academic performance [5,6], and self-esteem [7]
A lack of PA can lead to many health risks, and in 2009 it was identified by the World Health Organization (WHO) as the fourth leading risk factor for worldwide deaths (6% of global deaths) [10]
The daily moderate to vigorous physical activity (MVPA) of children and adolescents living on the Tibetan
Summary
Regular physical activity (PA) has been demonstrated to affect weight control [1], musculoskeletal health, cardiovascular risks [2], motor skill development [3], cognitive ability [4], academic performance [5,6], and self-esteem [7]. PA is the foundation of health for children and adolescents, who are at critical stages of physical and mental development [11]. A dose-response analysis on PA and health suggested that a cumulative 60 minutes (min) of moderate to vigorous physical activity (MVPA) per day has important health benefits for most children and adolescents [12,13]. The WHO recommends that children and adolescents should accumulate at least 60 min/day of MVPA to obtain the necessary health benefits [11]
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