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Cross-transfer effects of resistance training with blood flow restriction.
Med Sci Sports Exerc. 2008 Feb; 40(2):258-63.MS

Abstract

PURPOSE

This study investigated whether muscle hypertrophy-promoting effects are cross-transferred in resistance training with blood flow restriction, which has been shown to evoke strong endocrine activation.

METHODS

Fifteen untrained men were randomly assigned into the occlusive training group (OCC, N = 8) and the normal training group (NOR, N = 7). Both groups performed the same unilateral arm exercise (arm curl) at 50% of one-repetition maximum (1RM) without occlusion (three sets, 10 repetitions). Either the dominant or nondominant arm was randomly chosen to be trained (OCC-T, NOR-T) or to serve as a control (OCC-C, NOR-C). After the arm exercise, OCC performed leg exercise with blood flow restriction (30% of 1RM, three sets, 15-30 repetitions), whereas NOR performed the same leg exercise without occlusion. The training session was performed twice a week for 10 wk. In a separate set of experiments, acute changes in blood hormone concentrations were measured after the same leg exercises with (N = 5) and without (N = 5) occlusion.

RESULTS

Cross-sectional area (CSA) and isometric torque of elbow flexor muscles increased significantly in OCC-T, whereas no significant changes were observed in OCC-C, NOR-T, and NOR-C. CSA and isometric torque of thigh muscles increased significantly in OCC, whereas no significant changes were observed in NOR. Noradrenaline concentration showed a significantly larger increase after leg exercise with occlusion than after exercises without occlusion, though growth hormone and testosterone concentrations did not show significant differences between these two types of exercises.

CONCLUSION

The results indicate that low-intensity resistance training increases muscular size and strength when combined with resistance exercise with blood flow restriction for other muscle groups. It was suggested that any circulating factor(s) was involved in this remote effect of exercise on muscular size.

Authors+Show Affiliations

Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Komaba, Meguro-ku, Tokyo, Japan. h_madarame@hotmail.comNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

18202577

Citation

Madarame, Haruhiko, et al. "Cross-transfer Effects of Resistance Training With Blood Flow Restriction." Medicine and Science in Sports and Exercise, vol. 40, no. 2, 2008, pp. 258-63.
Madarame H, Neya M, Ochi E, et al. Cross-transfer effects of resistance training with blood flow restriction. Med Sci Sports Exerc. 2008;40(2):258-63.
Madarame, H., Neya, M., Ochi, E., Nakazato, K., Sato, Y., & Ishii, N. (2008). Cross-transfer effects of resistance training with blood flow restriction. Medicine and Science in Sports and Exercise, 40(2), 258-63. https://doi.org/10.1249/mss.0b013e31815c6d7e
Madarame H, et al. Cross-transfer Effects of Resistance Training With Blood Flow Restriction. Med Sci Sports Exerc. 2008;40(2):258-63. PubMed PMID: 18202577.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cross-transfer effects of resistance training with blood flow restriction. AU - Madarame,Haruhiko, AU - Neya,Mitsuo, AU - Ochi,Eisuke, AU - Nakazato,Koichi, AU - Sato,Yoshiaki, AU - Ishii,Naokata, PY - 2008/1/19/pubmed PY - 2008/4/16/medline PY - 2008/1/19/entrez SP - 258 EP - 63 JF - Medicine and science in sports and exercise JO - Med Sci Sports Exerc VL - 40 IS - 2 N2 - PURPOSE: This study investigated whether muscle hypertrophy-promoting effects are cross-transferred in resistance training with blood flow restriction, which has been shown to evoke strong endocrine activation. METHODS: Fifteen untrained men were randomly assigned into the occlusive training group (OCC, N = 8) and the normal training group (NOR, N = 7). Both groups performed the same unilateral arm exercise (arm curl) at 50% of one-repetition maximum (1RM) without occlusion (three sets, 10 repetitions). Either the dominant or nondominant arm was randomly chosen to be trained (OCC-T, NOR-T) or to serve as a control (OCC-C, NOR-C). After the arm exercise, OCC performed leg exercise with blood flow restriction (30% of 1RM, three sets, 15-30 repetitions), whereas NOR performed the same leg exercise without occlusion. The training session was performed twice a week for 10 wk. In a separate set of experiments, acute changes in blood hormone concentrations were measured after the same leg exercises with (N = 5) and without (N = 5) occlusion. RESULTS: Cross-sectional area (CSA) and isometric torque of elbow flexor muscles increased significantly in OCC-T, whereas no significant changes were observed in OCC-C, NOR-T, and NOR-C. CSA and isometric torque of thigh muscles increased significantly in OCC, whereas no significant changes were observed in NOR. Noradrenaline concentration showed a significantly larger increase after leg exercise with occlusion than after exercises without occlusion, though growth hormone and testosterone concentrations did not show significant differences between these two types of exercises. CONCLUSION: The results indicate that low-intensity resistance training increases muscular size and strength when combined with resistance exercise with blood flow restriction for other muscle groups. It was suggested that any circulating factor(s) was involved in this remote effect of exercise on muscular size. SN - 0195-9131 UR - https://www.unboundmedicine.com/medline/citation/18202577/Cross_transfer_effects_of_resistance_training_with_blood_flow_restriction_ L2 - http://dx.doi.org/10.1249/mss.0b013e31815c6d7e DB - PRIME DP - Unbound Medicine ER -