Sawka M N, Glaser R M, Laubach L L, Al-Samkari O, Suryaprasad A G
J Appl Physiol Respir Environ Exerc Physiol. 1981 Apr;50(4):824-8. doi: 10.1152/jappl.1981.50.4.824.
The purpose of this study was to quantitate the maximal power output (POmax), peak oxygen uptake (peak VO2), and maximal heart rate (HRmax) for wheelchair ergometer (WERG) exercise performed by three groups of disabled males: young adult (20-30 yr), middle-aged (50-60 yr), and elderly (80-90 yr). These subjects, who were confined to wheelchairs for similar time periods (mean = 11.7 yr), participated in progressive-intensity discontinuous test protocols on a WERG. Lower (P less than 0.01) mean POmax, peak VO2, and HRmax values were found with advancing age groups. In relationship to age, decreases in POmax and HRmax values were best described by parabolic models, whereas decreases in peak VO2 values were best described by a linear model. In comparison with young adults (83 W, 27 ml . kg-1 . min-1), surprisingly low POmax and peak VO2 values were found for the middle-aged (16 W, 10 ml . kg-1 . min-1) and elderly (7 W, 8 ml . kg-1 . min-1). When our peak VO2 data were combined with other data in the literature for upper body exercise by male disabled individuals, a decrease of 0.19 1 . min-1 or 2.9 ml . kg-1 . min-1 per decade of life was found.
本研究的目的是对三组男性残疾者进行轮椅测力计（WERG）运动时的最大功率输出（POmax）、峰值摄氧量（peak VO2）和最大心率（HRmax）进行定量分析。这三组男性残疾者分别为青年（20 - 30岁）、中年（50 - 60岁）和老年（80 - 90岁）。这些受试者使用轮椅的时间相近（平均 = 11.7年），他们参与了在WERG上进行的递增强度间断测试方案。随着年龄组的增加，平均POmax、peak VO2和HRmax值降低（P < 0.01）。与年龄的关系方面，POmax和HRmax值的降低最好用抛物线模型描述，而peak VO2值的降低最好用线性模型描述。与青年（83 W，27 ml·kg⁻¹·min⁻¹）相比，中年（16 W，10 ml·kg⁻¹·min⁻¹）和老年（7 W，8 ml·kg⁻¹·min⁻¹）的POmax和peak VO2值低得出奇。当我们将peak VO2数据与文献中其他男性残疾个体上身运动的数据相结合时，发现每十年生命期下降0.19 l·min⁻¹或2.9 ml·kg⁻¹·min⁻¹。
