4주간의 고정형 및 혼합형 평압·저산소 트레이닝이 엘리트 태권도 선수의 혈중산소운반능력, 에너지대사 및 골격근 산소화 농도에 미치는 영향 (The effect of fixed and mixed normobaric hypoxic training during 4weeks on oxygen delivering capacity of the blood, energy metabolism, and skeletal muscle oxygenation)

서지정보

· 발행기관 : 한국체육과학회
· 수록지 정보 : 한국체육과학회지 / 25권 / 4호 / 1063 ~ 1075페이지
· 저자명 : 박훈영, 선우섭, 김성호, 남상석

초록

This study was designed to examine the effect of 4 weeks fixed and mixed intermittent hypoxic training (IHT) on exercise load, oxygen delivering capacity of the blood, energy metabolism, and skeletal muscle oxygenations. Elite Taekwondo athletes (n=25 out of 30) participated in the study as subjects and divided into three groups such as control group (n=8) performed training at sea-level, fixed hypoxic group (n=9) performed training at 16.5%O2, and mixed hypoxic group (n=8) performed training at 14.5% O2 (~2 weeks) and 16.5% O2(~4 weeks). They performed cycle exercise (30 min) and treadmill exercise (30 min) within 80%HRmax developed Miyashita et al. on 1985. Exercise frequency was 1hour, 3days per a week, 4 weeks. At rest and during exercise, exercise load, Hb concentration, Hct, VO2, blood lactate level, △ O2Hb, △HHb, and TOI was measured before and after training (Pre and Post) in each groups. As a result, 4weeks fixed and mixed hypoxic training does not induced improvement on oxygen delivering capacity of the blood through Hb concentration and Hct. However, blood lactate concentration, △O2Hb, △HHb, and TOI improved in mixed and fixed hypoxic training groups compared with control group. As a results, despite no difference on exercise load between three groups, VO2 presented a lower increase in mixed and fixed hypoxic groups compared with control group. In other words, we confirmed that the increase of exercise economy in mixed and fixed hypoxic groups compared with control group. Also, the increase of exercise economy appeared most notably in mixed hypoxic training group.

영어초록

This study was designed to examine the effect of 4 weeks fixed and mixed intermittent hypoxic training (IHT) on exercise load, oxygen delivering capacity of the blood, energy metabolism, and skeletal muscle oxygenations. Elite Taekwondo athletes (n=25 out of 30) participated in the study as subjects and divided into three groups such as control group (n=8) performed training at sea-level, fixed hypoxic group (n=9) performed training at 16.5%O2, and mixed hypoxic group (n=8) performed training at 14.5% O2 (~2 weeks) and 16.5% O2(~4 weeks). They performed cycle exercise (30 min) and treadmill exercise (30 min) within 80%HRmax developed Miyashita et al. on 1985. Exercise frequency was 1hour, 3days per a week, 4 weeks. At rest and during exercise, exercise load, Hb concentration, Hct, VO2, blood lactate level, △ O2Hb, △HHb, and TOI was measured before and after training (Pre and Post) in each groups. As a result, 4weeks fixed and mixed hypoxic training does not induced improvement on oxygen delivering capacity of the blood through Hb concentration and Hct. However, blood lactate concentration, △O2Hb, △HHb, and TOI improved in mixed and fixed hypoxic training groups compared with control group. As a results, despite no difference on exercise load between three groups, VO2 presented a lower increase in mixed and fixed hypoxic groups compared with control group. In other words, we confirmed that the increase of exercise economy in mixed and fixed hypoxic groups compared with control group. Also, the increase of exercise economy appeared most notably in mixed hypoxic training group.

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