Department of General and Applied Kinesiology, Faculty of Kinesiology, University of Zagreb, Zagreb, Croatia.
'VII' High-school, Zagreb, Croatia.
PLoS One. 2019 Jul 3;14(7):e0219217. doi: 10.1371/journal.pone.0219217. eCollection 2019.
The main purpose of the study was to explore sex and age specific correlations between self-reported and estimated physical fitness. In this cross-sectional study, we recruited 1 036 secondary-school students (55.3% girls). Self-reported physical fitness was assessed on a 10-point scale, with a higher score indicating better physical fitness. We measured waist circumference, sit-ups in 1 minute, standing long jump and sit-and-reach test and calculated z-scores to obtain objective physical fitness index. Boys performed better in sit-ups in 1 minute and standing long jump tests and had higher waist circumference values. Girls performed better in sit-and-reach test. Overall, boys had higher physical fitness z-score values, compared to girls. Younger boys had better physical fitness perception (r1st grade = 0.61, p<0.001), compared to older ones (r = 0.40-0.50, p<0.001). In girls, correlation coefficient was the highest in the 3rd grade (r = 0.46, p<0.001), followed by the 2ndgrade (r = 0.43, p<0.001), the 1stgrade (r = 0.41, p<0.001) and the 4th grade (r = 0.37, p<0.001). Our study shows moderate sex and age specific correlation between self-reported and estimated physical fitness in a large sample of adolescents.
本研究的主要目的是探索自我报告和估计的体能之间的性别和年龄特异性相关性。在这项横断面研究中，我们招募了 1036 名中学生（55.3%为女生）。自我报告的体能通过 10 分制进行评估，得分越高表示体能越好。我们测量了腰围、1 分钟仰卧起坐、立定跳远和坐立前伸测试，并计算了 z 分数以获得客观的体能指数。男生在 1 分钟仰卧起坐和立定跳远测试中表现更好，且腰围值更高。女生在坐立前伸测试中表现更好。总体而言，男生的体能 z 分数值高于女生。与年龄较大的男孩相比，年龄较小的男孩对体能的感知更好（r1 年级=0.61，p<0.001），而年龄较大的男孩的相关系数为 0.40-0.50（p<0.001）。在女生中，相关性最高的是 3 年级（r=0.46，p<0.001），其次是 2 年级（r=0.43，p<0.001）、1 年级（r=0.41，p<0.001）和 4 年级（r=0.37，p<0.001）。我们的研究表明，在一个较大的青少年样本中，自我报告和估计的体能之间存在中等程度的性别和年龄特异性相关性。
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