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Acute skeletal muscle responses to very low-load resistance exercise with and without the application of blood flow restriction in the upper body.
Clin Physiol Funct Imaging. 2019 May; 39(3):201-208.CP

Abstract

The purpose was to examine the acute skeletal muscle response to high load exercise and low-load exercise with and without different levels of applied pressure (BFR). A total of 22 participants completed the following four conditions: elbow flexion exercise to failure using a traditional high load [70% 1RM, (7000)], low load [15% 1RM,(1500)], low load with moderate BFR [15%1RM+40%BFR(1540)] or low load with greater BFR [15% 1RM+80%BFR(1580)]. Torque and muscle thickness were measured prior to, immediately post, and 15 min postexercise. Muscle electromyography (EMG) amplitude was measured throughout. Immediately following exercise, the 7000 condition had lower muscle thickness [4·2(1·0)cm] compared to the 1500 [4·4 (1·1)cm], 1540 [4·4(1·1)cm] and 1580 [4·5(1·0)cm] conditions. This continued 15 min post. Immediately following exercise, torque was lower in the 1500 [31·8 (20) Nm], 1540 [28·3(16·9) Nm, P<0·001] and 1580 [29·5 (17) Nm] conditions compared to the 7000 condition [40 (19) Nm]. Fifteen minutes post, 1500 and 1540 conditions demonstrated lower torque compared to the 7000 condition. For the last three repetitions percentage EMG was greater in the 7000 compared to the 1580 condition. Very low-load exercise (with or without BFR) appears to result in greater acute muscle swelling and greater muscular fatigue compared to high load exercise.

Authors+Show Affiliations

USF Muscle Laboratory, Division of Exercise Science, University of South Florida, Tampa, FL, USA.School of Kinesiology, University of Southern Mississippi, Hattiesburg, MS, USA.Kevser Ermin Applied Physiology Laboratory, Department of Health, Exercise Science, and Recreation Management, The University of Mississippi, University, MS, USA.Department of Exercise Science, Lindenwood Belleville, Belleville, IL, USA.Department of Kinesiology and Health Promotion, Troy University, Troy, AL, USA.Kevser Ermin Applied Physiology Laboratory, Department of Health, Exercise Science, and Recreation Management, The University of Mississippi, University, MS, USA.Kevser Ermin Applied Physiology Laboratory, Department of Health, Exercise Science, and Recreation Management, The University of Mississippi, University, MS, USA.Kevser Ermin Applied Physiology Laboratory, Department of Health, Exercise Science, and Recreation Management, The University of Mississippi, University, MS, USA.

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

30506882

Citation

Buckner, Samuel L., et al. "Acute Skeletal Muscle Responses to Very Low-load Resistance Exercise With and Without the Application of Blood Flow Restriction in the Upper Body." Clinical Physiology and Functional Imaging, vol. 39, no. 3, 2019, pp. 201-208.
Buckner SL, Jessee MB, Dankel SJ, et al. Acute skeletal muscle responses to very low-load resistance exercise with and without the application of blood flow restriction in the upper body. Clin Physiol Funct Imaging. 2019;39(3):201-208.
Buckner, S. L., Jessee, M. B., Dankel, S. J., Mattocks, K. T., Mouser, J. G., Bell, Z. W., Abe, T., & Loenneke, J. P. (2019). Acute skeletal muscle responses to very low-load resistance exercise with and without the application of blood flow restriction in the upper body. Clinical Physiology and Functional Imaging, 39(3), 201-208. https://doi.org/10.1111/cpf.12557
Buckner SL, et al. Acute Skeletal Muscle Responses to Very Low-load Resistance Exercise With and Without the Application of Blood Flow Restriction in the Upper Body. Clin Physiol Funct Imaging. 2019;39(3):201-208. PubMed PMID: 30506882.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Acute skeletal muscle responses to very low-load resistance exercise with and without the application of blood flow restriction in the upper body. AU - Buckner,Samuel L, AU - Jessee,Matthew B, AU - Dankel,Scott J, AU - Mattocks,Kevin T, AU - Mouser,J Grant, AU - Bell,Zachary W, AU - Abe,Takashi, AU - Loenneke,Jeremy P, Y1 - 2018/12/02/ PY - 2018/07/31/received PY - 2018/11/06/accepted PY - 2018/12/7/pubmed PY - 2019/7/31/medline PY - 2018/12/4/entrez KW - Kaatsu KW - blood flow restriction KW - ischaemia KW - low-load KW - volitional failure SP - 201 EP - 208 JF - Clinical physiology and functional imaging JO - Clin Physiol Funct Imaging VL - 39 IS - 3 N2 - The purpose was to examine the acute skeletal muscle response to high load exercise and low-load exercise with and without different levels of applied pressure (BFR). A total of 22 participants completed the following four conditions: elbow flexion exercise to failure using a traditional high load [70% 1RM, (7000)], low load [15% 1RM,(1500)], low load with moderate BFR [15%1RM+40%BFR(1540)] or low load with greater BFR [15% 1RM+80%BFR(1580)]. Torque and muscle thickness were measured prior to, immediately post, and 15 min postexercise. Muscle electromyography (EMG) amplitude was measured throughout. Immediately following exercise, the 7000 condition had lower muscle thickness [4·2(1·0)cm] compared to the 1500 [4·4 (1·1)cm], 1540 [4·4(1·1)cm] and 1580 [4·5(1·0)cm] conditions. This continued 15 min post. Immediately following exercise, torque was lower in the 1500 [31·8 (20) Nm], 1540 [28·3(16·9) Nm, P<0·001] and 1580 [29·5 (17) Nm] conditions compared to the 7000 condition [40 (19) Nm]. Fifteen minutes post, 1500 and 1540 conditions demonstrated lower torque compared to the 7000 condition. For the last three repetitions percentage EMG was greater in the 7000 compared to the 1580 condition. Very low-load exercise (with or without BFR) appears to result in greater acute muscle swelling and greater muscular fatigue compared to high load exercise. SN - 1475-097X UR - https://www.unboundmedicine.com/medline/citation/30506882/Acute_skeletal_muscle_responses_to_very_low_load_resistance_exercise_with_and_without_the_application_of_blood_flow_restriction_in_the_upper_body_ L2 - https://doi.org/10.1111/cpf.12557 DB - PRIME DP - Unbound Medicine ER -