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October 21, 2013The Journal of Strength and Conditioning Research

Short-term resistance training under normobaric hypoxia did not significantly improve squat 1RM, leg strength, or body composition compared to normoxia in untrained men.

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Why the study?

Does short-term resistance training under normobaric hypoxia improve muscular performance and body composition compared to normoxia in resistance-untrained men?

Population

18 resistance-untrained men, mean age 21.3 ± 2.0 years, height 172.7 ± 5.5 cm, weight 67.3 ± 9.7 kg

Comparison

6 weeks of squat exercise training under… vs 6 weeks of squat exercise training under…

Design

RCT, matched and assigned

Follow-up

6 weeks

Key result

Short-term resistance training under normobaric hypoxia did not significantly improve squat 1RM, leg strength, or body composition compared to normoxia in untrained men.

Authors

JHJen‐Yu HoTKTai-Yu KuoKLKuan‐Lin Liu

Discussion

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Member takes

Overview

Normobaric hypoxia adds no benefit to short-term resistance training; confirms equivalent strength and composition gains versus normoxia in untrained men.

Study Design

Type

RCT (n=18)

Structured PICO

Does short-term resistance training under normobaric hypoxia improve muscular performance and body composition compared to normoxia in resistance-untrained men?

P
Population
18 resistance-untrained men (mean age 21.3 years) assigned to 6 weeks of squat exercise training under normobaric hypoxia or normoxia.
I
Intervention
6 weeks of squat exercise training under normobaric hypoxia (FiO2 = 15%), consisting of 3 weekly sessions (18 total) of 3 sets of back squat at 10-repetition maximum with 2 minutes rest
C
Comparator
6 weeks of squat exercise training under normoxia, using the same training protocol
O
Outcome
Muscular performance (squat 1 repetition maximum, maximal isometric and isokinetic leg strength) and body composition (lean body mass, fat mass)surrogate

Main Result

Absolute Event Rate: 109.4% vs 105.6%

Adding normobaric hypoxia to short-term resistance training does not provide additive benefits for muscular performance or body composition in previously untrained men.

Cite This Study

Ho et al. (2013) conducted an RCT in Healthy (resistance-untrained) (n=18). Normobaric hypoxia vs. Normoxia was evaluated on Squat 1 repetition maximum (1RM). Short-term resistance training under normobaric hypoxia did not significantly improve squat 1RM, leg strength, or body composition compared to normoxia in untrained men.

synapsesocial.com/papers/6a6dcbc375498292b707fc27https://doi.org/10.1519/jsc.0000000000000289
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Effects of strength training under hypoxic conditions on muscle performance, body composition and haematological variables2020 · 21 citations
  2. 2The Effect of Normobaric Hypoxia on Resistance Training Adaptations in Older Adults2020 · 18 citations
  3. 3Influence of Normobaric Hypoxia on Maximal Force Production Following High-Intensity Resistance Circuit Training2026
  4. 4Impact of Resistance Exercise under Hypoxia on Postexercise Hemodynamics in Healthy Young Males2018 · 13 citations
  5. 5Acute physiological and perceptual responses to high‐load resistance exercise in hypoxia2017 · 14 citations