Autonomic Function Predicts Fitness Response to Short-Term High-Intensity Interval Training
| Autor: | Antti M. Kiviniemi, Ilkka Heinonen, Jarna C. Hannukainen, Jukka Kapanen, Kari K. Kalliokoski, Anna M. Savolainen, Jari-Joonas Eskelinen, Arto J. Hautala, Mikko P. Tulppo |
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| Rok vydání: | 2015 |
| Předmět: |
Adult
Male medicine.medical_specialty Supine position Physical Therapy Sports Therapy and Rehabilitation Autonomic Nervous System Interval training Heart Rate Internal medicine medicine Aerobic exercise Heart rate variability Humans Orthopedics and Sports Medicine Balance (ability) Morning Physical Education and Training business.industry Heart Training effect Middle Aged Adaptation Physiological Physical Fitness Physical therapy Cardiology Exercise Test business High-intensity interval training |
| Zdroj: | International journal of sports medicine. 36(11) |
| ISSN: | 1439-3964 |
| Popis: | We tested the hypothesis that baseline cardiac autonomic function and its acute response to all-out interval exercise explains individual fitness responses to high-intensity interval training (HIT). Healthy middle-aged sedentary men performed HIT (n=12, 4-6×30 s of all-out cycling efforts with 4-min recovery) or aerobic training (AET, n=9, 40-60 min at 60% of peak workload in exercise test [Loadpeak]), comprising 6 sessions within 2 weeks. Low (LF) and high frequency (HF) power of R-R interval oscillation were analyzed from data recorded at supine and standing position (5+5 min) every morning during the intervention. A significant training effect (p< 0.001), without a training*group interaction, was observed in Loadpeak and peak oxygen consumption (VO2peak). Pre-training supine LF/HF ratio, an estimate of sympathovagal balance, correlated with training outcome in Loadpeak (Spearman's rho [rs]=-0.74, p=0.006) and VO2peak (rs=- 0.59, p=0.042) in the HIT but not the AET group. Also, the mean change in the standing LF/HF ratio in the morning after an acute HIT exercise during the 1(st) week of intervention correlated with training response in Loadpeak (rs=- 0.68, p=0.014) and VO2peak (rs=-0.60, p=0.039) with HIT but not with AET. In conclusion, pre-training cardiac sympathovagal balance and its initial alterations in response to acute HIT exercise were related to fitness responses to short-term HIT. |
| Databáze: | OpenAIRE |
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