Impact of low-load resistance exercise with and without blood flow restriction on muscle strength, endurance, and oxidative capacity: A pilot study.

Autor: Davis BH; School of Kinesiology, Louisiana State University, Baton Rouge, Louisiana, USA., Stampley JE; School of Kinesiology, Louisiana State University, Baton Rouge, Louisiana, USA., Granger J; School of Kinesiology, Louisiana State University, Baton Rouge, Louisiana, USA., Scott MC; School of Kinesiology, Louisiana State University, Baton Rouge, Louisiana, USA.; Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, Louisiana, USA., Allerton TD; Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, Louisiana, USA., Johannsen NM; School of Kinesiology, Louisiana State University, Baton Rouge, Louisiana, USA.; Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, Louisiana, USA., Spielmann G; School of Kinesiology, Louisiana State University, Baton Rouge, Louisiana, USA.; Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, Louisiana, USA., Irving BA; School of Kinesiology, Louisiana State University, Baton Rouge, Louisiana, USA.; Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, Louisiana, USA.
Jazyk: angličtina
Zdroj: Physiological reports [Physiol Rep] 2024 Jun; Vol. 12 (12), pp. e16041.
DOI: 10.14814/phy2.16041
Abstrakt: Low-load resistance exercise (LLRE) to failure can increase muscle mass, strength, endurance, and mitochondrial oxidative capacity (OXPHOS). However, the impact of adding blood flow restriction to low-load resistance exercise (LLBFR) when matched for volume on these outcomes is incompletely understood. This pilot study examined the impact of 6 weeks of single-legged LLBFR and volume-matched LLRE on thigh bone-free lean mass, strength, endurance, and mitochondrial OXPHOS. Twenty (12 males and 8 females) untrained young adults (mean ± SD; 21 ± 2 years, 168 ± 11 cm, 68 ± 12 kg) completed 6 weeks of either single-legged LLBFR or volume-matched LLRE. Participants performed four sets of 30, 15, 15, and 15 repetitions at 25% 1-RM of leg press and knee extension with or without BFR three times per week. LLBFR increased knee extension 1-RM, knee extension endurance, and thigh bone-free lean mass relative to control (all p < 0.05). LLRE increased leg press and knee extension 1-RM relative to control (p = 0.012 and p = 0.054, respectively). LLRE also increased mitochondrial OXPHOS (p = 0.047 (nonparametric)). Our study showed that LLBFR increased muscle strength, muscle endurance, and thigh bone-free lean mass in the absence of improvements in mitochondrial OXPHOS. LLRE improved muscle strength and mitochondrial OXPHOS in the absence of improvements in thigh bone-free lean mass or muscle endurance.
(© 2024 The Author(s). Physiological Reports published by Wiley Periodicals LLC on behalf of The Physiological Society and the American Physiological Society.)
Databáze: MEDLINE
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