Billinger Sandra A, Loudon Janice K, Gajewski Byron J
Department of Physical Therapy and Rehabilitation Science, School of Allied Health, University of Kansas Medical Center, Kansas City, USA.
J Strength Cond Res. 2008 Sep;22(5):1556-62. doi: 10.1519/JSC.0b013e3181739dd7.
Maximum oxygen consumption ([latin capital V with dot above]o2max) is the primary measure for cardiorespiratory fitness, and the [latin capital V with dot above]o2max value achieved on the treadmill using the Bruce protocol is considered the gold standard. A novel exercise test using a total body recumbent stepper (TBRS) would be an alternative for measuring [latin capital V with dot above]o2max in healthy individuals. Furthermore, the TBRS exercise test (TBRS-XT) may be beneficial for individuals such as those with stroke, who cannot tolerate a treadmill or cycle ergometer test due to hemiparesis, increased tone in the extremities, or balance deficits. The purpose of the study was to assess the validity and reliability of the TBRS-XT in determining [latin capital V with dot above]o2max in healthy adults. Twenty-two healthy adults (9 women, 13 men; 26.9 +/- 6.1 years of age) participated in 2 maximum exercise tests in random order. One exercise test was performed on the treadmill using the Bruce protocol and the other exercise test was the TBRS-XT. Statistical analysis of the data was conducted using simple linear regression where the response variable was the [latin capital V with dot above]o2max from the Bruce protocol and the predictor variable was the [latin capital V with dot above]o2max from the TBRS-XT. A 95% prediction interval was used to assess the strength of the prediction of [latin capital V with dot above]o2 from the Bruce protocol with R2 = 0.851. Preliminary data suggest that the TBRS-XT may be a valid test to predict [latin capital V with dot above]o2max when treadmill testing is not feasible. This would allow clinicians an alternative method for exercise testing and prescription to promote healthy lifestyle interventions for a variety of patient populations.
最大摄氧量（V̇O₂max）是心肺适能的主要衡量指标，使用布鲁斯方案在跑步机上测得的V̇O₂max值被视为金标准。一种使用全身卧式踏步机（TBRS）的新型运动测试将是测量健康个体V̇O₂max的替代方法。此外，TBRS运动测试（TBRS-XT）可能对中风患者等个体有益，这些患者由于偏瘫、肢体肌张力增加或平衡障碍而无法耐受跑步机或自行车测力计测试。本研究的目的是评估TBRS-XT在确定健康成年人V̇O₂max方面的有效性和可靠性。22名健康成年人（9名女性，13名男性；年龄26.9±6.1岁）以随机顺序参加了2次最大运动测试。一次运动测试是使用布鲁斯方案在跑步机上进行的，另一次运动测试是TBRS-XT。使用简单线性回归对数据进行统计分析，其中响应变量是布鲁斯方案的V̇O₂max，预测变量是TBRS-XT的V̇O₂max。使用95%预测区间来评估布鲁斯方案对V̇O₂预测的强度，R² = 0.851。初步数据表明，当跑步机测试不可行时，TBRS-XT可能是预测V̇O₂max的有效测试。这将为临床医生提供一种替代的运动测试和处方方法，以促进针对各种患者群体的健康生活方式干预。
