Biomaterial Database

Excess CO(2) output response during and after short-term intensive exercise in sprinters and long-distance runners. 2000

T Yunoki, and M Horiuchi, and T Yano

Laboratory of Human Movement Sciences, Faculty of Education, Hokkaido University, Kita-ku, Sapporo, 060-0811 Japan. yunoki@edu.hokudai.ac.jp

The purpose of the present study was to examine the response of excess CO(2) output to short-term intensive exercise in sprinters (SPR) and long-distance runners (LDR). End-tidal CO(2) pressure (PETCO(2)) increased up to about 20 s postexercise and then returned to the resting level at about 2-3 min postexercise. Thereafter, PETCO(2) remained below the resting level. VCO(2) excess, defined as the difference between VCO(2) and VO(2) was integrated from the start of exercise until PETCO(2) returned to the resting level. This integrated VCO(2) excess was defined as the first phase of CO(2) excess (1st CO(2) excess). The subsequent integrated VCO(2) excess until 10 min postexercise was defined as the second phase of CO(2) excess (2nd CO(2) excess). The ratio of 1st CO(2) excess to the lactate rise from rest to the peak value was significantly lower in SPR than in LDR, whereas 2nd CO(2) excess was significantly greater in SPR than in LDR. The decrease in PETCO(2) at 10 min postexercise was significantly larger in SPR than in LDR. The 2nd CO(2) excess was closely related to the decrease in PETCO(2). The results in the second phase suggest that the difference in the response of excess CO(2) output is derived from the difference in the respiratory chemosensitivity to lactic acid rise.

UI	MeSH Term	Description	Entries
D002245	Carbon Dioxide	A colorless, odorless gas that can be formed by the body and is necessary for the respiration cycle of plants and animals.	Carbonic Anhydride,Anhydride, Carbonic,Dioxide, Carbon
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012420	Running	An activity in which the body is propelled by moving the legs rapidly. Running is performed at a moderate to rapid pace and should be differentiated from JOGGING, which is performed at a much slower pace.	Runnings
D013178	Sports Medicine	The field of medicine concerned with physical fitness and the diagnosis and treatment of injuries sustained in exercise and sports activities.	Medicine, Sport,Medicine, Sports,Sport Medicine
D013997	Time Factors	Elements of limited time intervals, contributing to particular results or situations.	Time Series,Factor, Time,Time Factor
D015444	Exercise	Physical activity which is usually regular and done with the intention of improving or maintaining PHYSICAL FITNESS or HEALTH. Contrast with PHYSICAL EXERTION which is concerned largely with the physiologic and metabolic response to energy expenditure.	Aerobic Exercise,Exercise, Aerobic,Exercise, Isometric,Exercise, Physical,Isometric Exercise,Physical Activity,Acute Exercise,Exercise Training,Activities, Physical,Activity, Physical,Acute Exercises,Aerobic Exercises,Exercise Trainings,Exercise, Acute,Exercises,Exercises, Acute,Exercises, Aerobic,Exercises, Isometric,Exercises, Physical,Isometric Exercises,Physical Activities,Physical Exercise,Physical Exercises,Training, Exercise,Trainings, Exercise
D019344	Lactic Acid	A normal intermediate in the fermentation (oxidation, metabolism) of sugar. The concentrated form is used internally to prevent gastrointestinal fermentation. (From Stedman, 26th ed)	Lactate,2-Hydroxypropanoic Acid,2-Hydroxypropionic Acid,Ammonium Lactate,D-Lactic Acid,L-Lactic Acid,Propanoic Acid, 2-Hydroxy-, (2R)-,Propanoic Acid, 2-Hydroxy-, (2S)-,Sarcolactic Acid,2 Hydroxypropanoic Acid,2 Hydroxypropionic Acid,D Lactic Acid,L Lactic Acid,Lactate, Ammonium