Blood flow restriction augments the cross-education effect of isometric handgrip training

Wong, Vickie; Spitz, Robert W.; Song, Jun Seob; Yamada, Yujiro; Kataoka, Ryo; Hammert, William B.; Kang, Anna; Seffrin, Aldo; Bell, Zachary W.; Loenneke, Jeremy P.

doi:10.1007/s00421-023-05386-y

Cited by 5 publications

(1 citation statement)

References 34 publications

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“…For instance, researchers have found that BFR training affected the electromyography signal, which supports the acute response of neuro-muscular [ 13 , 14 ]. In addition, studies have shown that muscle hypertrophy and strength gain can transfer from muscles exposed to BFR to muscles not exposed to BFR [ 15 , 16 ]. Moreover, Sugimoto et al[ 17 ] found that combining BFR with walking enhanced participants’ performance in cognition tasks.…”

Section: Introductionmentioning

confidence: 99%

Cerebral cortex activation and functional connectivity during low-load resistance training with blood flow restriction: An fNIRS study

Jia,

Lv,

et al. 2024

PLoS ONE

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Despite accumulating evidence that blood flow restriction (BFR) training promotes muscle hypertrophy and strength gain, the underlying neurophysiological mechanisms have rarely been explored. The primary goal of this study is to investigate characteristics of cerebral cortex activity during BFR training under different pressure intensities. 24 males participated in 30% 1RM squat exercise, changes in oxygenated hemoglobin concentration (HbO) in the primary motor cortex (M1), pre-motor cortex (PMC), supplementary motor area (SMA), and dorsolateral prefrontal cortex (DLPFC), were measured by fNIRS. The results showed that HbO increased from 0 mmHg (non-BFR) to 250 mmHg but dropped sharply under 350 mmHg pressure intensity. In addition, HbO and functional connectivity were higher in M1 and PMC-SMA than in DLPFC. Moreover, the significant interaction effect between pressure intensity and ROI for HbO revealed that the regulation of cerebral cortex during BFR training was more pronounced in M1 and PMC-SMA than in DLPFC. In conclusion, low-load resistance training with BFR triggers acute responses in the cerebral cortex, and moderate pressure intensity achieves optimal neural benefits in enhancing cortical activation. M1 and PMC-SMA play crucial roles during BFR training through activation and functional connectivity regulation.

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Section: Introductionmentioning

confidence: 99%

Cerebral cortex activation and functional connectivity during low-load resistance training with blood flow restriction: An fNIRS study

Jia,

Lv,

et al. 2024

PLoS ONE

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Cross-Education of Muscular Endurance: A Scoping Review

Song,

Yamada,

Kataoka

et al. 2024

Sports Med

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Background It is well established that performing unilateral resistance training can increase muscle strength not only in the trained limb but also in the contralateral untrained limb, which is widely known as the cross-education of strength. However, less attention has been paid to the question of whether performing unilateral resistance training can induce cross-education of muscular endurance, despite its significant role in both athletic performance and activities of daily living. Objectives The objectives of this scoping review were to provide an overview of the existing literature on cross-education of muscular endurance, as well as discuss its potential underlying mechanisms and offer considerations for future research. Methods A scoping review was conducted on the effects of unilateral resistance training on changes in muscular endurance in the contralateral untrained limb. This scoping review was conducted in PubMed, SPORTDiscus, and Scopus. Results A total of 2000 articles were screened and 21 articles met the inclusion criteria. Among the 21 included studies, eight studies examined the cross-education of endurance via absolute (n = 6) or relative (n = 2) muscular endurance test, while five studies did not clearly indicate whether they examined absolute or relative muscular endurance. The remaining eight studies examined different types of muscular endurance measurements (e.g., time to task failure, total work, and fatigue index). Conclusion The current body of the literature does not provide sufficient evidence to draw clear conclusions on whether the cross-education of muscular endurance is present. The cross-education of muscular endurance (if it exists) may be potentially driven by neural adaptations (via bilateral access and/or cross-activation models that lead to cross-education of strength) and increased tolerance to exercise-induced discomfort. However, the limited number of available randomized controlled trials and the lack of understanding of underlying mechanisms provide a rationale for future research.

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Unilateral high-load resistance training induced a similar cross-education of strength between the dominant and non-dominant arm

Song,

Hammert,

Kataoka

et al. 2024

Journal of Sports Sciences

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Blood flow restriction augments the cross-education effect of isometric handgrip training

Cited by 5 publications

References 34 publications

Cerebral cortex activation and functional connectivity during low-load resistance training with blood flow restriction: An fNIRS study

Cerebral cortex activation and functional connectivity during low-load resistance training with blood flow restriction: An fNIRS study

Cross-Education of Muscular Endurance: A Scoping Review

Unilateral high-load resistance training induced a similar cross-education of strength between the dominant and non-dominant arm

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