Objective To compare the difference between the maximum exercise work rate ( WRpeak ) which is predicted with FEV1 and the actual WRpeak in exercise challenge test. Methods A total of 39 subjects were included in the study, and they were given exercise challenge test. Their pulmonary function was detected before and after ECT, and the differences of the exercise intensity index were compared between the predicted and the actu-al. Results The actual WRpeak in patients was significantly lower than the predicted WRpeak, and the difference was statistically significant (P<0. 001). The actual HRmax was significantly lower than the expected HRmax, and the difference was statistically significant (P<0. 001). But the HRmax variation rate was lower than the WRpeak var-iation rate, and the difference was statistically significant (P<0. 05). Conclusion The maximum intensity predicted with FEV1 is different with the actual maximum intensity. The target motion intensity expected with maximum heart rate is closer to the subjects' actual maximum intensity compared with that FEV1 predicted target motion intensity.%目的 比较运动激发试验中FEV1预计的最大运动功率(WRpeak)与实际WRpeak的差异,并探讨新的运动强度指标.方法 共入组39例患者,进行运动激发试验及运动前后常规肺功能检测,比较各运动强度指标预计值与实测值的差异.结果 患者的实测WRpeak明显低于预计WRpeak,差异有统计学意义(P<0.001);实测最大运动心率(HRmax)明显低于预计HRmax,差异有统计学意义(P<0.001).但HRmax变异率低于WRpeak变异率,差异有统计学意义(P<0.05).WRpeak、HRmax与最大通气量(MVV)具有相关关系(P<0.05).结论 用FEV1预计的WRpeak与实际WRpeak有统计学差异,但运动心率的差异较小,用最大预计心率来确定目标运动强度比FEV1预计的目标运动强度更接近受试者的实际最大运动强度.
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