間歇低氧訓練對有氧適能與心率變異性表現之影響

The Effects of Intermittent Normobaric Hypoxia Training on

顏克典

指導教授 ： 林正常 ； 郭博昭

國立臺灣師範大學/運動與休閒學院/體育學系/博士(2005年)

摘要

無資料

關鍵字

間歇性常壓低氧訓練 ； 自主神經系統 ； 心率變異性 ； 低氧 ； 有氧運動能力

並列摘要

Objective: Interval normobaric hypoxic training (IHT) consists of repeated
(three to more times) short periods (5-15 min each) of steady or progressive
hypoxia, interrupted by similar periods of rest/recovery. Aim: to determine the
effects of IHT on aerobic endurance and cardiac autonomic modulation in
adolescents. Method: Thirty male adolescents completed a 15 days IHT regimen
(5:5-min hypoxia-to-normoxia ratio for 60 min) of intermittent normobaric
hypoxia (12%O2) combining 65% peak oxygen comsumption (V
•
O2peak) (IH+E),
intermittent normobaric normoxia (21%O2) combining 65% V
•
O2peak (IN+E) or
intermittent normobaric hypoxia (12%O2) only at rest (IH). Transfer function
analysis of heart rate variability (HRV) and respiration were measured during
IHT used to characterize low- (mainly sympathetic) and high-frequency (vagal)
cardiovascular fluctuations. Before and after IHT experimental protocol, we
recorded body composition and hematologic indexes at rest in the morning.
Subjects were performed the incremental exercise test. Lactate threshold (LT),
V •
O2peak and catecholamines changes (CAs) were determined to refer as the
aerobic capacity. Results: (1)There were significantly increased hematologic
indexes in EPO (23%), reticularcyte count (10.4%) and hemoglobin (14.7%)
after IHT in IH+E. (2)No significant changes were found on body composition.
(3)The performances of LT (43.9%) and relatived V
•
O2peak（ 26.7%）were
improved after IHT in IH+E. Plasma noradrenaline level after exhaustion test
were increasing 206.2% significantly in IH+E. (4) IHT decreased
sympathovagal tone in the initial stage and recovered progressively in later
period. Chronic IHT combining exercise induced better sympathovagal balance,
leading to greater tolerance of chronic hypoxia. Conclusion: These results
suggested that exercise in combination with IHT might have a benefit for the
aerobic performance and cardiac autonomic modulation.

並列關鍵字

Intermittent hypoxic training ； autonomic nervous system ； heart rate variability ； hypoxia ； aerobic performance

參考文獻

Semenza, G. L., Roth, P. H., Fang, H. M., & Wang, G. L. (1994). Transcriptional regulation of genes encoding glycolytic enzymes by hypoxia-inducible factor 1. The Journal of Biological Chemistry, 269(38), 23757-23763.

Abbrecht, P. H., & Littell, J. K. (1972). Plasma erythropoietin in men and mice during acclimatization to different altitudes. Journal of Applied Physiology, 32(1), 54-68.

Akselrod, S., Gordon, D., Ubel, F. A., Shannon, D. C., Berger, A. C., & Cohen, R. J. (1981). Power spectrum analysis of heart rate fluctuation: A quantitative probe of beat-to-beat cardiovascular control. Science, 213(4504), 220-222.

Alfrey, C. P., Rice, L., Udden, M. M., & Driscoll, T. B. (1997). Neocytolysis: Physiological down-regulator of red-cell mass. Lancet, 349(9062), 1389-1390.

Baevsky, R. (2002). Medical events during airline flights. The New England Journal of Medicine, 347(7), 535-537.