Research Centre in Physical Activity, Health and Leisure, Faculty of Sport, University of Porto, Porto, Portugal.
Faculty of Health Sciences, Klaipeda University, Klaipeda, Lithuania.
Am J Hum Biol. 2019 Nov;31(6):e23304. doi: 10.1002/ajhb.23304. Epub 2019 Aug 5.
The purpose of this study was to examine the longitudinal associations between cardiorespiratory fitness and health-related quality of life (HRQoL) in a sample of adolescents, and to determine whether changes in cardiorespiratory fitness were associated with HRQoL over a 2-year follow-up.
This is a longitudinal analysis with 571 Portuguese adolescents (274 boys and 297 girls) aged 12-18 years. HRQoL was measured with the Kidscreen-10 questionnaire; the 20 m shuttle-run was used to estimate cardiorespiratory fitness; socioeconomic status was assessed with the Family Affluence Scale; and pubertal stage was assessed with Tanner stages. Linear regression and analysis of covariance (ancovas) were used to examine the associations between cardiorespiratory fitness and HRQoL.
HRQoL decreased over a 2-year period both in boys and girls (P < .05). Moreover, girls at baseline and at follow-up reported significantly lower HRQoL values than boys (between subjects P < .001). After adjustments for potential confounders, regression analyses showed significant cross-sectional associations between cardiorespiratory fitness and HRQoL both at baseline (B = 0.095; P = .023) and at follow-up (B = 0.090; P = .012). ancova showed that adolescents whose cardiorespiratory fitness decreased over time exhibited lower scores of HRQoL at follow-up, compared to those with persistent high cardiorespiratory fitness; this held after adjustments for age, sex, socioeconomic status, and pubertal stage.
Changes in cardiorespiratory fitness during adolescence were associated with HRQoL over a 2-year period. This study suggests that improving cardiorespiratory fitness could be an important strategy in improving the HRQoL of adolescents.
本研究旨在探讨青少年样本中心肺适能与健康相关生活质量（HRQoL）之间的纵向关联，并确定心肺适能的变化是否与 2 年随访期间的 HRQoL 相关。
这是一项纵向分析，共有 571 名 12-18 岁的葡萄牙青少年（男 274 名，女 297 名）参与。使用 Kidscreen-10 问卷评估 HRQoL；20m 往返跑用于估计心肺适能；家庭富裕量表评估社会经济地位；Tanner 阶段评估青春期阶段。线性回归和协方差分析（ancovas）用于检查心肺适能与 HRQoL 之间的关联。
男孩和女孩的 HRQoL 在 2 年内均呈下降趋势（P<.05）。此外，基线和随访时的女孩报告的 HRQoL 值明显低于男孩（组间 P<.001）。在调整潜在混杂因素后，回归分析显示心肺适能与 HRQoL 在基线时（B=0.095；P=.023）和随访时（B=0.090；P=.012）均存在显著的横断面关联。ancova 显示，与持续高心肺适能的青少年相比，随着时间的推移心肺适能下降的青少年在随访时的 HRQoL 评分较低；这在调整年龄、性别、社会经济地位和青春期阶段后仍然成立。
青少年时期心肺适能的变化与 2 年内的 HRQoL 相关。本研究表明，提高心肺适能可能是改善青少年 HRQoL 的重要策略。
