Itoh H, Ohkuwa T
Department of Physical Education, Nagoya Institute of Technology, Japan.
J Sports Med Phys Fitness. 1993 Sep;33(3):239-45.
The purpose of this study was to investigate the difference in human blood ammonia content between the sexes and the relationship between work.lean body mass (LBM)-1 and the peak blood ammonia content following supramaximal exercise. Eight males and six females ran on a motor-driven treadmill reaching exhaustion induced in less than 70 s. Total work, heart rate (HR), blood lactate and ammonia concentrations were measured at rest, immediately after warming-up, and at 2.5, 5, 7.5, 10, 12.5, 15 min after supramaximal exercise. Total work and work.LBM-1 were significantly greater in males than in females (p < 0.01). There was a significant relationship between the peak blood ammonia content and work.LBM-1 in all of the subjects (r, 0.627: p < 0.05). Though no significant difference was found in ammonia at rest between males and females, the peak blood ammonia content after supramaximal exercise in males was significantly greater than in females (p < 0.05). These results suggest that the peak blood ammonia content relates positively to anaerobic work capacity following supramaximal exercise, and that a difference in blood ammonia content exists between the sexes.
本研究的目的是调查男女之间人体血氨含量的差异，以及最大摄氧量运动后工作-去脂体重（LBM）-1与血氨峰值含量之间的关系。8名男性和6名女性在电动跑步机上跑步，在不到70秒内达到疲劳状态。在休息时、热身结束后以及最大摄氧量运动后的2.5、5、7.5、10、12.5、15分钟测量总功、心率（HR）、血乳酸和氨浓度。男性的总功和工作-LBM-1显著高于女性（p<0.01）。所有受试者的血氨峰值含量与工作-LBM-1之间存在显著关系（r，0.627：p<0.05）。虽然男女在休息时的氨含量没有显著差异，但男性在最大摄氧量运动后的血氨峰值含量显著高于女性（p<0.05）。这些结果表明，最大摄氧量运动后血氨峰值含量与无氧工作能力呈正相关，且男女之间存在血氨含量差异。
