School of Physical and Health Education, Nipissing University, 100 College Dr, Box 5002, North Bay, ON, P1B 8L7, Canada.
Research Center for Physical Activity and Health, School of Sports, Federal University of Santa Catarina, Florianópolis, Brazil.
Qual Life Res. 2023 Jul;32(7):2089-2098. doi: 10.1007/s11136-023-03379-0. Epub 2023 Mar 1.
To investigate the independent and joint associations of cardiorespiratory fitness and body mass index (BMI) with five dimensions of Health-Related Quality of Life (HRQoL) in a cross-sectional sample of Brazilian adolescents.
619 Brazilian schoolchildren answered a survey, BMI categories (healthy weight and overweight/obesity) were assessed by their weight and height, and they participated in a 20-m shuttle run test. HRQoL was measured using the KIDSCREEN-27 across five dimensions: Physical Well-Being, Psychological Well-Being, Autonomy and Parent Relation, Peers and Social Support, and School Environment. Sex, age, maternal education, physical activity level, and habitual sedentary behaviour were assessed and used as adjusting variables. Cardiorespiratory fitness was categorized in tertiles and independent and joint associations were tested using mixed-effects linear regressions.
Higher levels of cardiorespiratory fitness were favourably associated with the physical well-being, psychological well-being, and peer and social support dimensions of HRQoL. Adolescents with overweight/obesity presented higher scores on peer and social support dimensions when compared to healthy-weight adolescents. Independent of the adolescents' BMI categories, better cardiorespiratory fitness was positively associated with physical and psychological well-being when compared with the category of overweight/obesity and low cardiorespiratory fitness. In addition, adolescents with overweight/obesity combined with intermediate cardiorespiratory fitness or high cardiorespiratory fitness had higher scores on the peer and social support dimension.
Cardiorespiratory fitness is a strong correlate of HRQoL across most of the dimensions measured, while BMI was a correlate of one dimension of HRQoL. Future studies should evaluate these relationships prospectively and experimentally.
在巴西青少年的横断面样本中，调查心肺适能和体重指数（BMI）与健康相关生活质量（HRQoL）五个维度的独立和联合关联。
619 名巴西学童回答了一份调查，通过他们的体重和身高评估 BMI 类别（健康体重和超重/肥胖），并参加了 20 米穿梭跑测试。使用 KIDSCREEN-27 测量 HRQoL，涵盖五个维度：身体幸福感、心理幸福感、自主和父母关系、同伴和社会支持以及学校环境。评估了性别、年龄、母亲教育程度、身体活动水平和习惯性久坐行为，并将其用作调整变量。将心肺适能分为三分位，并使用混合效应线性回归测试独立和联合关联。
较高水平的心肺适能与 HRQoL 的身体幸福感、心理幸福感和同伴与社会支持维度呈正相关。与健康体重的青少年相比，超重/肥胖的青少年在同伴和社会支持维度上的得分更高。独立于青少年的 BMI 类别，与超重/肥胖和低心肺适能类别相比，更好的心肺适能与身体和心理幸福感呈正相关。此外，超重/肥胖且心肺适能中等或高的青少年在同伴和社会支持维度上的得分更高。
心肺适能是大多数所测 HRQoL 维度的强相关因素，而 BMI 是一个 HRQoL 维度的相关因素。未来的研究应该前瞻性和实验性地评估这些关系。
