Development of sinusoidal work test for evaluation of health and fitness

本研究是一项旨在阐明正弦工作试验是否有助于评估健康和体能的检查。对16名体能训练者和14名非训练组受试者进行了4min正弦运动的心率相位反应和幅度反应的测定，结果表明：1.训练组心率相位滞后较短，且两组在正弦运动时向低负荷运动的相位滞后均短于大负荷运动；2.训练组心率幅度明显大于大负荷运动；3.心率反应与每周运动频率和最大摄氧量显著相关。8名未经训练的受试者接受了为期6个月的跑步训练，每次2~3次/周。心率对正弦运动的相位滞后越小，心率幅度越大。因此，未经训练的受试者的心率对正弦运动的反应与受训的受试者相似。这些发现表明，在体能训练的男性中，心率对正弦运动的反应更快、更大。心率反应的这些特点是由于长期的体育锻炼习惯造成的。因此，正弦做功试验有可能成为评价健康体能的一项有用的试验。

Present study was an examination to clarify whether sinusoidal, work test is useful for evaluating health and fitness. We determined the phase response and amplitude response of heart rate from sinusoidal exercise with period of 4 min in 16 physically trained and 14 untrained subjects.The results obtained were as follows ;1.The phase lag of heart rate was shorter in trained group, and phase lag to low workload during sinusoidal exercise is shorter than to high workload in both groups.2.The amplitude of heart rate was significantly larger in trained group.3.Significant correlations were found between response of heart rate and weekly exercise frequency and maximal oxygen uptake. And the former correlation was higher than the later.4.Eight untrained subjects undergone a 6-month running training (2-3/week). Then their phase lag of heart rate to sinusoidal exercise was shorter, and amplitude of heart rate was larger. As a result, response of heart rate to sinusoidal exercise in untrained subjects was similar to trained subjects.These findings suggest that response of heart rate to sinusoidal exercise was faster and larger in physically trained men. These characteristics of heart rate response are due to long-term physical training habit. Therefore it is possible that sinusoidal work test is useful test for evaluating health and fitness.