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首页> 外文期刊>Gait & posture >Prediction of mechanical efficiency from heart rate during stair-climbing in children with cerebral palsy.
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Prediction of mechanical efficiency from heart rate during stair-climbing in children with cerebral palsy.

机译：根据脑瘫儿童爬楼梯过程中的心率预测机械效率。

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Measuring mechanical efficiency (ME) is potentially useful to assess motor performance in individuals with physical disabilities. The purpose of this study was to determine the accuracy of predicting ME from heart rate (HR) during a self-paced stair-climbing test in children with a range of motor abilities. The participants were 12 normally developed children (ND) and 24 with cerebral palsy (CP), ranging in age from 5 to 15 years (mean: 8 years). Five were at level II, 11 at level III and 8 at level IV according to the gross motor function classification system. ME was calculated as the ratio of external work to O(2) uptake (VO(2) ml/min) measured or predicted from HR. The absolute values of VO(2) and HR during stair-climbing were not significantly correlated. However, the correlation between values above resting (dVO(2) and dHR) was significant (r=0.61). Furthermore, when including body weight as a second variable the prediction of dVO(2) was significantly improved (r=0.85). This resulted in a high correlation (r=0.96) between measured and predicted net ME (ME(net)). Predicted ME(net) for 25 stair-climbing tests repeated after an average of 6 months resulted in an r-value of 0.92 with predicted ME(net) of the first test. This study demonstrates that ME(net) during stair-climbing can be predicted in children with a broad range of motor abilities from dHR and may be a simple tool to help define developmental stages or evaluating intervention efficacy.
机译：测量机械效率（ME）可能对评估身体残障人士的运动表现很有用。这项研究的目的是确定在具有多种运动能力的儿童中，在自定进度的爬楼梯测试期间，根据心率（HR）预测ME的准确性。参与者为12名正常发育儿童（ND）和24名脑瘫（CP），年龄从5至15岁不等（平均8岁）。根据总运动功能分类系统，五级分别为II级，11级为III级和8级为IV级。 ME的计算是根据HR测得或预测的外部工作与O（2）摄取的比率（VO（2）ml / min）。爬楼梯过程中VO（2）和HR的绝对值没有显着相关。但是，高于静止值（dVO（2）和dHR）之间的相关性很显着（r = 0.61）。此外，当将体重作为第二变量时，dVO（2）的预测显着提高（r = 0.85）。这导致测量的和预测的净ME（ME（net））之间具有高度相关性（r = 0.96）。平均6个月后重复进行25次爬楼梯测试的预测ME（净值），得出的r值为0.92，第一次测试的预测ME（净值）。这项研究表明，通过dHR可以预测具有广泛运动能力的儿童在爬楼梯期间的ME（net），并且可能是帮助定义发育阶段或评估干预效果的简单工具。

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