The Study Of The Energy Metabolism Of The Match-play And The Menstrual Abnormity Of The Chinese Women Handball Players

Aiming at the physical capacity and menstrual abnormity problem the Chinese women handball players encountered during the preparation for the Beijing Olympic Games,we analyzed their energy metabolism of the match-play and menstrual abnormity,to explore the handball special characters of the energy metabolism and clarify the mechanism of the menstrual abnormity of the women handball players,in order to provide some scientific grounds for the women handball training.PartⅠ.The energy metabolism character of the Chinese women handball match-playThe 18 women handball players were taken as the subjects,and their VO2max,AT,30s power were measured in the laboratory.The heart rate variation of the different-positioned handball players during the international and domestic games was measured twice for the national team,and the lactate after the first half and after the full time of the game was also measured,to explore the characteristics of energy metabolism of the handball games.The results and conclusions were as follow:1.The handball game was one kind of mixed activity with short intermittence,fluctuant intensity,diverse movement,flexible playing time.The average intensity during the game was around AT,so the main activity belonged to the aerobics,and the anaerobic activity account for a small part of the game,but the intensity was high enough to reach the individual limit, different individually and position related.It is speculated that a very strong explosive power and a medium aerobic ability is necessary to become a good handball player.The physical requirement differs from position with the highest requirement for the aerobic ability for the wing then the back player,and the GK.2.The Chinese women handball players had a comparatively good aerobic ability,but not good anaerobic ability.Based on the positioned requirement for the energy metabolism,the wing had a comparatively lower Vo2max.The low Bla level after the game and the decreased heart rate in the second half may be reasons to limit the players'performance.3.The characteristics of the energy metabolism of the domestic game were similar to that of the international game,so we speculated that the high level domestic game can be a training for the physical ability special for the women handball players.PartⅡ.The physiological analysis of the menstrual abnormity of the Chinese women handball playersThe physical capacity,FSH,LH,E2,GH,Leptin,T,C,ACTH,Ca and fat percentage of the handball players were determined.The changes of the Leptin,T,C,IFN-γ,IL-2,IL-4 and IL10 mRNA expression during one of the typical training cycle of four weeks were also checked to explore the causes and the influences of the abnormal menstruation.The results and conclusions were as follows:1.There was no significant difference in the VO2max,Pmax,the average anaerobic power between the players with or without normal menstruation,which meaned that the physical capacity show no significant difference between the two group.2.The fat percentage,Leptin,FSH,E2,PRO,GH of the menstrual abnormal players were significantly lower,but the stress hormone,testosterone were normal for the MA players.It signified the HPO axis of the menstrual abnormal players was inhibited which might be related to the lower fat percentage,Leptin,FSH,E2,PRO,GH level.Besides,the 4 weeks training induced the leptin of the MA players to increase,we speculate that too much higher or lower leptin is a very important cause for menstrual abnormity.3.The immunity homeostasis variations were similar in the normal and abnormal menstrual players.The training activate the cell mediated immunity and humoral immunity,while after the high load training until the ending of the tapering period the immunity homeostasis came to imbalance,with the downward of the ratio TH1/TH2.It reminded us that the players immunity imbalance after the high load training till the ending of the tapering period be forseen to prevent URTI.4.T,C level didn't vary significantly for both groups during the training cycle which may signify that the influence of the menstrual abnormity on the recovery system was limited.In conclusion,under the current women handball physical ability requirement and training system,there exist many menstrual abnormity players,but the influence of the menstrual abnormity on the physical capacity and condition is limited.