摘要
为了检验力竭性运动锻炼和饥饿是否对南方鲇Silurus meridonalisChen维持能量消耗和无氧代谢能力产生影响,在25℃条件下测定了维持日粮(1.5%body mass per day)和饥饿条件下南方鲇15d力竭性锻炼(5min chasing)和随后5d恢复过程静止代谢率(VO2rest)和运动后过量耗氧(Excess post-exerciseVO2,EPOC)的变化。另外两组非锻炼组分别作为摄食和饥饿对照组。实验过程中摄食和饥饿对照组VO2rest显著下降(P<0.05),而摄食和饥饿对照组经过15d的锻炼显著上升(P<0.05)。经过5d的恢复2锻炼组VO2rest显著下降与对照组无显著差异。摄食和饥饿对照组力竭运动后代谢率峰值(VO2peak)在实验过程中显著下降(P<0.05),而摄食和饥饿锻炼组经过15d没有显著变化。锻炼取消后2锻炼组VO2peak显著下降至对照组水平。各锻炼组和对照组间过量耗氧均无显著差异。实验提示:(1)锻炼导致VO2rest和VO2peak显著提高,但影响可塑性大,5d恢复期后影响消失;(2)锻炼导致力竭运动后代谢恢复速率加快,5d恢复期后锻炼影响依然存在;(3)对饥饿和摄食组,锻炼的生理影响相似,但饥饿组VO2rest对锻炼更为敏感。
To test whether training and fasting have significant effects on maintenance energy expenditure and anaerobic metabolism, the resting oxygen consumption rate （VO2rest） and post-exercise VO2 （EPOC） in southern catfish （ Silurus meridionalis Chen） fed on maintenance rations （ 1.5% body mass per day） or fasted during 15d of exhaustive exercise training （5 min chasing） and a subsequent 5d without training was investigated at 25℃. Two groups kept under the same conditions without exercise training acted as feeding and fasting controls. The VO2rest values of both feeding and fasting controls decreased significantly during the experiment （P 〈 0. 05） , while those of the feeding and fasting training groups were significantly increased after 15d of training （ P 〈 0. 05 ）. VO2rest of both training groups decreased significantly to control levels after training was stopped. The VO2peak values of both feeding and fasting controls decreased significantly during the experiment （P 〈 0. 05）, while those of the feeding and fasting training groups were unchanged after 15d of training. VO2peak of both training groups decreased significantly to control levels after training was stopped. There were no significant differences in excess post-exercise VO2 （EPOC） between any training and control groups. It is suggested that ： （ 1 ） VO2rest, and VO2peak were significantly improved by exercise training compared with the control groups, but returned to their previous values 5d after stopping training; （2） post-exercise VO2 recovered faster in training groups compared with control groups, and this trait persisted 5d after stopping training; （3） training had similar physiological effects on feeding and fasting southern catfish, except that VO2rest was more sensitive to training in the fasting group.
出处
《水生生物学报》
CAS
CSCD
北大核心
2009年第5期837-843,共7页
Acta Hydrobiologica Sinica
基金
NSFC(30700087)
CSTC(2007BB1226)
关键词
运动后过量耗氧(EPOC)
力竭性运动锻炼
静止代谢率
南方鲇
Excess post-exercise oxygen consumption （EPOC）
Exhaustive exercise training
VO2rest
Silurus meridionalis Chen
