Sampaio Tatiana, Morais Jorge E, Bragada José A
Department of Sports Sciences, Instituto Politécnico de Bragança, 5301-856 Bragança, Portugal.
Research Center in Sports, Health and Human Development (CIDESD), 6201-001 Covilhã, Portugal.
J Funct Morphol Kinesiol. 2024 Feb 8;9(1):30. doi: 10.3390/jfmk9010030.
Cardiovascular capacity, expressed as maximal oxygen uptake (VO), is a strong predictor of health and fitness and is considered a key measure of physiological function in the healthy adult population. The aim of this study was to investigate the influence of the physical activity levels (PA) of participants in the StepTest4all (validated protocol for the estimation of VO in adults). The sample consisted of 69 participants, including 27 women (age 21.7 ± 3.6 years; body mass = 63.5 ± 14.8 kg; height = 1.64 ± 0.06 m; body mass index = 23.7 ± 5.3 kg/m) and 42 men (aged 21.7 ± 3.4 years; body mass = 72.0 ± 7.3 kg; height = 1.77 ± 0.07 m; body mass index = 23.1 ± 2.1 kg/m). The participants were assigned to one of the two groups: (i) the VO prediction group and (ii) the prediction model validation group. In the multiple linear regression, the following predictors of VO remained significant: sex ( < 0.001), physical activity level ( = 0.014), and HRR ( = 0.020). The prediction equation (R = 74.0%, SEE = 4.78) showed a close and strong relationship between the measurements and can be expressed as follows: VO = 17.105 + 0.260·(HRR) + 8.563·(sex) + 4.097·(PA), in which HRR is the magnitude of the HR decrease (bpm) in one minute immediately after stopping the step, and sex: men = 1, women = 0, and PA is level 1 (low), level 2 (moderate), and level 3 (high). The StepTest4all was shown to be a suitable method for estimating cardiovascular capacity, expressed as VO, in young adults. Retaining PA as a significant predictor allows us to better individualize the participants' VO.
心血管能力以最大摄氧量（VO₂）表示，是健康和体能的有力预测指标，被视为健康成年人群生理功能的关键衡量标准。本研究的目的是调查参与“全民阶梯测试”（一种用于估计成年人VO₂的有效方案）的参与者身体活动水平（PA）的影响。样本包括69名参与者，其中27名女性（年龄21.7±3.6岁；体重=63.5±14.8千克；身高=1.64±0.06米；体重指数=23.7±5.3千克/平方米）和42名男性（年龄21.7±3.4岁；体重=72.0±7.3千克；身高=1.77±0.07米；体重指数=23.1±2.1千克/平方米）。参与者被分为两组之一：（i）VO₂预测组和（ii）预测模型验证组。在多元线性回归中，以下VO₂预测指标仍然显著：性别（p<0.001）、身体活动水平（p=0.014）和心率储备（HRR，p=0.020）。预测方程（R²=74.0%，标准误=4.78）显示测量值之间存在密切且强烈的关系，可表示如下：VO₂=17.105+0.260·（HRR）+8.563·（性别）+4.097·（PA），其中HRR是停止阶梯运动后立即一分钟内心率下降的幅度（次/分钟），性别：男性=1，女性=0，PA为1级（低）、2级（中等）和3级（高）。“全民阶梯测试”被证明是一种适用于估计年轻人心血管能力（以VO₂表示）的方法。将PA保留为显著预测指标使我们能够更好地对参与者的VO₂进行个体化评估。
