The Experiment On Monitoring Short Time Intense Exercise By Using The Blood Ammonia As An Effective Maker

Content: More than a century's research indicates that not single reason leads toexercise fatigue, but several reasons. Researchers figure out that there're affinityrelationship between ammonia accumulation and exercise fatigue. Ammoniaaccumulation not only reduces power of muscle but also depresses the coordinateability and control ability. Commonly, high intensity exercise, the elevator of bloodammonia indicates anaerobic energy supply out-of-balance. And influences skeletalmuscle's energy metabolic and physiological characteristic of muscle cell membrane,so decreases muscle power ability and leads to exercise fatigue. Despite most ofresearch indicates blood ammonia level has close relation to high intensity exercise,there is some dispute about blood ammonia as an indicator of high intensity exercisestress implications.Objective: The author Probes into dynamic time course of blood ammonia changesafter 1 min high intensity cycle ergometer exercise and investigates the bloodammonia whether as an indicator of short time hith intensity exercise.Method: Select 8 male college athlete at random form 38 male track and fieldathletes(National BandⅡathlete) whose major events are sprint, long jump andheight jump. Obtain the 1.5 ml blood sample from antecubital vein when at rest, afterworming exercise, after exercise immediately, recover period 3min, 6min, 9 min and22 min. Measure the marker of blood ammonia, blood lactate, creatine kinase andlactate dehydrogenase. Also, investigate the Pearson correlation coefficient betweenblood ammonia and previous classic markers which apply to monitor short time ofhigh intensity exercise.Results: (1) Blood ammonia is sensitive to 1 min high intensity exercise, BA level issignificantly higher than after warming exercise (141.44±16.29μmol/L, 64.64±7.98μmol/L, P＜0.01). BA peak level appears at about recover period 6 min(200.48±25.52μmoll L). BA level in recover period 22 min is significantly thanafter warming exercise immediately (135.30±13.43μmol/L, 64.64±7.98μmol/L, P＜0.05). (2) Blood lactate is more sensitive than BA in 1 min high intensityexercise. BLa peak level appears at recovery period 3 min. And then, Pearsoncorrelation coefficient shows medium relationship between BA and BLa (r=0.578, P ＜0.05). (3) Experiment result shows high correlation between BA and CK (r=0.754,P＜0.05). Moreover, medium relation between BA and LDH (r=0.562, P＜0.01).Conclusion: (1) BA is sensitive to exercise intensity. The clearance velocity of BA isslowly than ascend trend. Indicate that BA maybe used to evaluate, monitor andprescribe exercise intensity during competition and training. (2) Experiment resultshows that positive Pearson correlation coefficient between BA and CK, LDH,indicates that BA maybe is a good marker for monitoring exercise. But furtherinvestigation is required to explore this possibility.