Impact of high-intensity interval hyperpnea on aerobic energy release and inspiratory muscle fatigue

呼吸过度 心脏病学 医学 通风(建筑) 会话(web分析) 呼吸系统 内科学 强度(物理) 物理疗法 麻醉 物理 计算机科学 量子力学 热力学 万维网
作者
Suzuna Sato,Kōji Ishida,Noriko Tanaka,Keisho Katayama
出处
期刊:Respiratory Physiology & Neurobiology [Elsevier BV]
卷期号:: 104170-104170
标识
DOI:10.1016/j.resp.2023.104170
摘要

Respiratory muscle endurance training reportedly has beneficial effects on whole-body endurance performance. We produced a novel high-intensity interval (HII) protocol and characterized the associated physiological responses and respiratory muscle fatigue. Peak oxygen uptake of respiratory muscle (V̇O2peakRM) was estimated during the respiratory incremental test. The HII session consisted of five 3-minute hyperpnea periods at 100%V̇O2peakRM interspersed with 2-minute periods at 40%V̇O2peakRM (25minutes total). The high-intensity continuous (HIC) session involved a single time-to-end bout of hyperpnea at 100%V̇O2peakRM. The moderate-intensity continuous (MIC) session involved 25minutes of hyperpnea at 60% of maximal voluntary ventilation. V̇O2RM was recorded continuously, and maximal inspiratory pressure (PImax) was assessed before and after the sessions. HII session: V̇O2RM gradually increased as the sets proceeded, whereas PImax decreased significantly. HIC session: V̇O2RM increased progressively, and the time to end was 6.5±0.5minutes. PImax decreased significantly. MIC session: V̇O2RM did not change for 25minutes, and PImax remained unchanged. The duration of V̇O2RM at near- and supra-maximal levels in the HII session (10±1minutes) was longer than that in the HIC session (4±1minutes). The decrease in PImax was larger in the HII session (-12±3%) than MIC session (-4±3%). The HII protocol is characterized by a longer time to maximally stimulate the aerobic energy system of respiratory muscle than the HIC protocol and greater inspiratory muscle fatigue than the traditional MIC protocol. These results suggest that the HII protocol could enhance the efficacy of respiratory muscle training programs.
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