Effect of unilateral and bilateral resistance exercise on maximal voluntary strength, total volume of load lifted, and perceptual and metabolic responses.
Biol Sport. 2015 Mar; 32(1):35-40.BS

Abstract

The present study investigated the effect of unilateral and bilateral resistance exercise (RE) on maximal voluntary strength, total volume of load lifted (TVLL), rating of perceived exertion (RPE) and blood lactate concentration of resistance-trained males. Twelve healthy men were assessed for the leg extension one-repetition maximum (1RM) strength using bilateral and unilateral contractions. Following this assessment, an RE session (3 sets of repetitions to failure) was conducted with bilateral and unilateral (both limbs) contractions using a load of 50% 1RM. The TVLL was calculated by the product of the number of repetitions and the load lifted per repetition. RPE and blood lactate were measured before, during and after each set. Session RPE was measured 30 minutes after RE sessions. There was a significant difference in the bilateral (120.0±11.9) and unilateral (135.0±20.2 kg) 1RM strength (p < 0.05). The TVLL was similar between both RE sessions. Although the repetitions decreased with each successive set, the total number of repetitions completed in the bilateral protocol (48) was superior to the unilateral (40) protocol (p < 0.05). In both bouts, RPE increased with each subsequent set whilst blood lactate increased after set 1 and thereafter remained stable (p < 0.05). The RPE and lactate responses were not significantly different between both sessions. In conclusion, a bilateral deficit in leg extension strength was confirmed, but the TVLL was similar between both RE sessions when exercising to voluntary fatigue. This outcome could be attributed to the number of repetitions completed in the unilateral RE bout. The equal TVLL would also explain the similar perceptual and metabolic responses across each RE session.

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Authors+Show Affiliations

Costa E

Department of Physical Education, Federal University of Rio Grande do Norte, Natal, RN, Brazil.

Moreira A

School of Physical Education and Sport, University of São Paulo, São Paulo, SP, Brazil.

Cavalcanti B

Department of Physical Education, State University of Rio Grande do Norte, Mossoró, RN, Brazil.

Krinski K

Federal University of Vale do São Francisco, Petrolina, PE, Brazil.

Aoki M

School of Arts, Sciences and Humanities, University of São Paulo, São Paulo, SP, Brazil.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

25729148

Citation

Costa, Ec, et al. "Effect of Unilateral and Bilateral Resistance Exercise On Maximal Voluntary Strength, Total Volume of Load Lifted, and Perceptual and Metabolic Responses." Biology of Sport, vol. 32, no. 1, 2015, pp. 35-40.

Costa E, Moreira A, Cavalcanti B, et al. Effect of unilateral and bilateral resistance exercise on maximal voluntary strength, total volume of load lifted, and perceptual and metabolic responses. Biol Sport. 2015;32(1):35-40.

Costa, E., Moreira, A., Cavalcanti, B., Krinski, K., & Aoki, M. (2015). Effect of unilateral and bilateral resistance exercise on maximal voluntary strength, total volume of load lifted, and perceptual and metabolic responses. Biology of Sport, 32(1), 35-40. https://doi.org/10.5604/20831862.1126326

Costa E, et al. Effect of Unilateral and Bilateral Resistance Exercise On Maximal Voluntary Strength, Total Volume of Load Lifted, and Perceptual and Metabolic Responses. Biol Sport. 2015;32(1):35-40. PubMed PMID: 25729148.

* Article titles in AMA citation format should be in sentence-case

TY - JOUR T1 - Effect of unilateral and bilateral resistance exercise on maximal voluntary strength, total volume of load lifted, and perceptual and metabolic responses. AU - Costa,Ec, AU - Moreira,A, AU - Cavalcanti,B, AU - Krinski,K, AU - Aoki,Ms, Y1 - 2014/10/28/ PY - 2014/05/21/received PY - 2014/07/04/revised PY - 2014/07/14/accepted PY - 2015/3/3/entrez PY - 2015/3/3/pubmed PY - 2015/3/3/medline KW - bilateral deficit KW - lactate KW - maximal strength KW - rating of perceived exertion SP - 35 EP - 40 JF - Biology of sport JO - Biol Sport VL - 32 IS - 1 N2 - The present study investigated the effect of unilateral and bilateral resistance exercise (RE) on maximal voluntary strength, total volume of load lifted (TVLL), rating of perceived exertion (RPE) and blood lactate concentration of resistance-trained males. Twelve healthy men were assessed for the leg extension one-repetition maximum (1RM) strength using bilateral and unilateral contractions. Following this assessment, an RE session (3 sets of repetitions to failure) was conducted with bilateral and unilateral (both limbs) contractions using a load of 50% 1RM. The TVLL was calculated by the product of the number of repetitions and the load lifted per repetition. RPE and blood lactate were measured before, during and after each set. Session RPE was measured 30 minutes after RE sessions. There was a significant difference in the bilateral (120.0±11.9) and unilateral (135.0±20.2 kg) 1RM strength (p < 0.05). The TVLL was similar between both RE sessions. Although the repetitions decreased with each successive set, the total number of repetitions completed in the bilateral protocol (48) was superior to the unilateral (40) protocol (p < 0.05). In both bouts, RPE increased with each subsequent set whilst blood lactate increased after set 1 and thereafter remained stable (p < 0.05). The RPE and lactate responses were not significantly different between both sessions. In conclusion, a bilateral deficit in leg extension strength was confirmed, but the TVLL was similar between both RE sessions when exercising to voluntary fatigue. This outcome could be attributed to the number of repetitions completed in the unilateral RE bout. The equal TVLL would also explain the similar perceptual and metabolic responses across each RE session. SN - 0860-021X UR - https://www.unboundmedicine.com/medline/citation/25729148/Effect_of_unilateral_and_bilateral_resistance_exercise_on_maximal_voluntary_strength_total_volume_of_load_lifted_and_perceptual_and_metabolic_responses_ DB - PRIME DP - Unbound Medicine ER -

Tags

Effect of unilateral and bilateral resistance exercise on maximal voluntary strength, total volume of load lifted, and perceptual and metabolic responses.Biol Sport. 2015 Mar; 32(1):35-40.BS