Inter-set rest configuration effect on acute physiological and performance-related responses to a resistance training session in terrestrial vs simulated hypoxia

PeerJ

article

Cristina Benavente¹  Belén Feriche¹  Guillermo Olcina²  Brad J. Schoenfeld³  Alba Camacho-Cardenosa²  Filipa Almeida¹  Ismael Martínez-Guardado⁴  Rafael Timon²  Paulino Padial¹ 

[1] Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada;Faculty of Sport Sciences, University of Extremadura;Department of Health Sciences, CUNY Lehman College;Faculty of Education, BRABE Group, Department of Psychology. Faculty of Life and Nature Sciences, University of Nebrija

关键词: Hypertrophy;    Performance;    Hypobaric hypoxia;    Normobaric Hypoxia;    Interval rest;   

DOI  :  10.7717/peerj.13469

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

BackgroundMetabolic stress is considered a key factor in the activation of hypertrophy mechanisms which seems to be potentiated under hypoxic conditions.This study aimed to analyze the combined effect of the type of acute hypoxia (terrestrial vs simulated) and of the inter-set rest configuration (60 vs 120 s) during a hypertrophic resistance training (RT) session on physiological, perceptual and muscle performance markers.MethodsSixteen active men were randomized into two groups based on the type of hypoxia (hypobaric hypoxia, HH: 2,320 m asl; vs normobaric hypoxia, NH: FiO2 of 15.9%). Each participant completed in a randomly counterbalanced order the same RT session in four separated occasions: two under normoxia and two under the corresponding hypoxia condition at each prescribed inter-set rest period. Volume-load (load × set × repetition) was calculated for each training session. Muscle oxygenation (SmO2) of the vastus lateralis was quantified during the back squat exercise. Heart rate (HR) was monitored during training and over the ensuing 30-min post-exercise period. Maximal blood lactate concentration (maxLac) and rating of perceived exertion (RPE) were determined after the exercise and at the end of the recovery period.Results1.01) and SmO2 0.79) at both rest intervals.ConclusionsResults suggest that the reduction in inter-set rest intervals from 120 s to 60 s provide a more potent perceptual, cardiovascular and metabolic stimulus in all environmental conditions, which could maximize hypertrophic adaptations in longer periods of training. The abrupt exposure to a reduced FiO2 at NH seems to reduce the inter-set recovery capacity during a traditional hypertrophy RT session, at least during a single acute exposition. These results cannot be extrapolated to longer training periods.

【 授权许可】

CC BY