Kantanista Adam, Osiński Wiesław
Chair of the Theory and Methodology of Physical Education, University School of Physical Education, Poznan, Poland.
Ann Agric Environ Med. 2014;21(1):114-9.
Underweight is associated with increased mortality of adults when compared to normal weight or overweight individuals. Studies of associations between underweight and physical activity levels in adolescents are sparse. The aim of this study was to determine the prevalence of underweight amongst 14 to 16 year-old girls and boys in tandem with the levels of physical activity and time spent in sedentary activities. The results were compared to those observed in normal weight and overweight adolescents.
This study included 1702 girls and 1547 boys aged from 14 to 16 years from twelve gymnasium schools in Poznan (Poland). Based on BMI values, the participants were assigned to the following categories: a) underweight, b) normal weight, and c) overweight. The levels of physical activity, participation rates in physical education classes and the time spent in sedentary activities were determined by means of questionnaire survey.
The fraction of underweight girls amounted to 11.6% and was similar to the percentage of obese girls (14.6%). The fraction of underweight boys was 7.0%, and was markedly lower than the percentage of overweight boys (17.0%). Underweight and overweight boys were characterized by significantly lower levels of physical activity compared to normal weight participants (p ≤.001). Both in girls and in boys, the prevalence of underweight and overweight was not significantly associated with the time spent in various sedentary activities.
Underweight occurs in relatively high fraction of girls and boys. Underweight is associated with lower levels of physical activity in boys. The prevalence of underweight among adolescents is not associated with time spent in sedentary activities.
与正常体重或超重个体相比，体重过轻与成年人死亡率增加相关。关于青少年体重过轻与身体活动水平之间关联的研究较少。本研究的目的是确定14至16岁女孩和男孩中体重过轻的患病率，并结合身体活动水平和久坐活动时间。将结果与正常体重和超重青少年的结果进行比较。
本研究纳入了来自波兰波兹南12所高中的1702名14至16岁女孩和1547名男孩。根据体重指数（BMI）值，将参与者分为以下几类：a）体重过轻，b）正常体重，c）超重。通过问卷调查确定身体活动水平、体育课参与率和久坐活动时间。
体重过轻女孩的比例为11.6%，与肥胖女孩的比例（14.6%）相似。体重过轻男孩的比例为7.0%，明显低于超重男孩的比例（17.0%）。与正常体重参与者相比，体重过轻和超重男孩的身体活动水平显著较低（p≤.001）。在女孩和男孩中，体重过轻和超重的患病率与各种久坐活动的时间均无显著关联。
体重过轻在女孩和男孩中所占比例相对较高。体重过轻与男孩较低的身体活动水平相关。青少年体重过轻的患病率与久坐活动时间无关。
