Rodrigues Filipe, Antunes Raul, Matos Rui, Jacinto Miguel, Monteiro Diogo, Forte Pedro, Monteiro António Miguel, Barbosa Tiago M
ESECS, Polytechnic of Leiria, 2411-901 Leiria, Portugal.
Life Quality Research Center, 2040-413 Leiria, Portugal.
Sports (Basel). 2023 Jun 6;11(6):113. doi: 10.3390/sports11060113.
This study aimed to examine the relationship between age, body mass index, muscle strength, and balance in physically active, aged adults.
Eighty-five participants were recruited for this study, having an average age of 70.31 years (SD = 9.90), ranging from 50 to 92 years. Twenty-six (30.6%) participants were male and fifty-nine (69.4%) were female. The participants had an average body mass index of 27.30 kg/m (SD = 3.62), ranging from 20.32 to 38.58 kg/m. Participants undertook the Timed-Up and Go to test balance, and the chair-stand test to assess lower body strength. Hierarchical regression analyses were conducted. Three models (Model 1, 2, and 3) were tested to assess their relationships with balance: M1-Lower body muscle strength; M2-Lower body muscle strength and body mass index; M3-Lower body muscle strength, body mass index, and age.
All hierarchical models displayed significant variance. The third model explained 50.9% of the variance in dynamic balance, [F(3, 81) = 27.94, < 0.001, R = 0.71, R = 0.51]. The difference in R between the first, second, and third models was statistically significant ( < 0.05). Age, body mass index, and lower body muscle strength had significant ( < 0.05) correlations with balance. In terms of the significant impact of each predictor, age had the strongest association with balance ( < 0.05).
The results are useful to understand mechanisms or diagnose people at risk of fall.
本研究旨在探讨身体活跃的老年成年人的年龄、体重指数、肌肉力量和平衡能力之间的关系。
招募了85名参与者进行本研究，他们的平均年龄为70.31岁（标准差=9.90），年龄范围在50至92岁之间。26名（30.6%）参与者为男性，59名（69.4%）为女性。参与者的平均体重指数为27.30kg/m（标准差=3.62），范围在20.32至38.58kg/m之间。参与者进行了定时起立行走测试以评估平衡能力，并进行了椅子站立测试以评估下肢力量。进行了分层回归分析。测试了三个模型（模型1、2和3）以评估它们与平衡能力的关系：M1-下肢肌肉力量；M2-下肢肌肉力量和体重指数；M3-下肢肌肉力量、体重指数和年龄。
所有分层模型均显示出显著差异。第三个模型解释了动态平衡中50.9%的差异，[F(3, 81) = 27.94，<0.001，R = 0.71，R² = 0.51]。第一个、第二个和第三个模型之间的R²差异具有统计学意义（<0.05）。年龄、体重指数和下肢肌肉力量与平衡能力具有显著（<0.05）相关性。就每个预测因素的显著影响而言，年龄与平衡能力的关联最强（<0.05）。
这些结果有助于理解跌倒风险机制或诊断有跌倒风险的人群。
