视力障碍青少年身体活动水平和久坐时间调查

目的了解中国视力障碍青少年日常身体活动模式和久坐行为时间,为指导学生科学合理安排作息时间提供参考。方法采用加速度计对中国西部地区某特殊教育学校78名7～23岁视力障碍青少年的身体活动水平和模式进行测量。结果男女生相比,男生身高略高、身体略重(t值分别为2.81,2.46,P值均<0.05)。基于Puyan等加速度计切点值,学生平均每天进行轻度身体活动(light physical activity,LPA)时间为(285.18±47.29) min,中等强度身体活动(moderate physical activity,MPA)时间为(141.92±57.63) min,高强度身体活动(vigorous PA,VPA)时间为(17.66±14.83) min,中高强度身体活动(moderate-to-vigorous-intensity physical activity,MVPA)时间为(159.58±69.83) min,久坐时间为(988.38±110.18)min。98.7%的受试者达到了WHO关于青少年每天应至少进行60 min中等及以上强度的身体活动的推荐量。结论中国...

Accelerometer-assessed physical activity and sedentary time in Chinese adolescents with visual impairments

Objective The purpose of this study is to examine the moderate-to-vigorous-intensity physical activity( MVPA and sedentary time among Chinese youth with visual impairments. Methods A total of 78 Chinese youth with visual impairments( 7 to 23 years) were recruited from a special school for deef and dumb. Acti Graph GT3 X accelerometers were used to measure the MVPA and sedentary time. Results Youth with visual impairments in this study spent an average of( 285.18±47.29) minutes of light PA,( 141.92±57.63) minutes of moderate PA,( 17.66±14.83) minutes of vigorous PA,( 159.58±69.83) minutes of moderate-to-vigorous-intensity PA and( 988.83±110.18) minutes of sedentary time per day. 98.7% of participants met the WHO physical activity guideline on at least 60 minutes MVPA per day. Conclusion Findings demonstrated that Chinese youth with visual impairments in this study had sufficient health-enhancing PA and were habitually active. Future research is needed to identify the factors that account for the high habitual PA levels of Chinese youth with visual impairments.