O'Neill M E
Cardiology Centre, Deakin, Australia.
Br J Sports Med. 1996 Mar;30(1):32-5. doi: 10.1136/bjsm.30.1.32.
To assess maternal rectal temperature and fetal heart rate responses to dynamic exercise.
11 healthy women with low risk pregnancies completed three separate upright cycling tests at 34 to 37 weeks gestation: 15 min at 62.5 W (mean maternal heart rate [MHR] 138 beats.min-1 (test A); 15 min at 87.5 W (MHR 156 beats.min-1) (test B); and 30 min at 62.5 W (MHR 142 beats.min-1) (test C). Rectal temperature and fetal heart rate were measured.
Mean temperature increase after tests B and C [by 0.4(SD 0.1) degrees C] was greater than after test A [0.2(0.1) degrees C] (P < 0.001). Fetal heart rate, measured in the recovery period immediately after exercise, increased significantly only after tests B and C (P < 0.01). Exercise related changes in temperature and fetal heart rate weakly correlated in tests B (P < 0.02) and C (P < 0.01).
Temperature and fetal heart rate changes were more marked after higher intensity (test B) or longer duration exercise (test C) compared with moderate exercise, but none of the tests caused adverse fetal heart rate changes (decrease in accelerations, bradycardia, or decelerations) or individual temperatures above 38 degrees C.
评估孕妇直肠温度及胎儿心率对动态运动的反应。
11名低风险妊娠的健康女性在妊娠34至37周时完成了三项独立的直立式自行车测试：62.5瓦功率下运动15分钟（孕妇平均心率[MHR]为138次/分钟）（测试A）；87.5瓦功率下运动15分钟（MHR为156次/分钟）（测试B）；62.5瓦功率下运动30分钟（MHR为142次/分钟）（测试C）。测量直肠温度和胎儿心率。
测试B和C后的平均体温升高[0.4（标准差0.1）℃]大于测试A后的升高[0.2（0.1）℃]（P<0.001）。仅在测试B和C后，运动后立即测量的恢复期胎儿心率显著增加（P<0.01）。在测试B（P<0.02）和C（P<0.01）中，与运动相关的温度和胎儿心率变化呈弱相关。
与适度运动相比，高强度（测试B）或长时间运动（测试C）后温度和胎儿心率变化更为明显，但所有测试均未引起胎儿心率不良变化（加速减少、心动过缓或减速）或个体体温超过38℃。
