Alterations in peak torque do not occur with hematological changes after muscle fatigue

Frank Shiguemitsu Suzuki, Marcelo Martins Kalytczak, Rodrigo Augusto Ferreira Palomares, Sergio Matias Silva, Fabiano Politi, Adriana Jaime Sbampato, Andrey Jorge Serra, Alexandre Lopes Evangelista, Angélica Castilho Alonso, Aylton Figueira Junior, Duncan Buchan, Julien Baker, Danilo Sales Bocalini

Research output: Contribution to journalArticle

Abstract

Introduction: Muscular fatigue during voluntary muscle contractions is a complex and multifactorial phenomenon associated with central changes and adaptations of the neuromuscular system. Objective: The aim of this study was to analyze the changes in both peak torque and hematological parameters in active and inactive healthy subjects following a muscular fatigue protocol. Methods: Twenty-one healthy adult males performed a muscle fatigue protocol (10 sets, 10 repetitions of knee extension at 75% of the maximal isometric torque (MIT), 120°s-1 and 40 seconds of rest). Hematocrit (Ht), red blood cells (RBC) and leukocytes (L) analysis were evaluated before (B) and after (A) a fatigue test. Results: The inactive group presented impairment only in concentric muscular action of -41±4% in relation to the active (-23±3%) group. No differences were found in hematological parameters in inactive group (Ht, B: 45.00±0.01 vs. A: 47.00±0.01; RBC, B: 442±40 vs. A: 487±41; L, B: 7,565±2,878 vs. A: 8,015±4,224) and the active group (Ht, B: 45.00±0.63 vs. A: 47.00±0.01; RBC, B: 477±30 vs. A: 559±37; L, B: 6,418±3,557 vs. A: 6,632±4,460). Conclusion: Differences were found only in concentric actions between groups. Additionally, there were no relationships found in hematological parameters between groups.
Original languageEnglish
Pages (from-to)246-249
JournalRevista Brasileira de Medicina do Esporte
Volume23
Issue number3
DOIs
Publication statusPublished - 1 May 2017

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Muscle Fatigue
Torque
Hematocrit
Erythrocytes
Muscle Contraction
Fatigue
Knee
Healthy Volunteers
Skeletal Muscle
Leukocytes

Cite this

Suzuki, F. S., Kalytczak, M. M., Ferreira Palomares, R. A., Silva, S. M., Politi, F., Sbampato, A. J., ... Bocalini, D. S. (2017). Alterations in peak torque do not occur with hematological changes after muscle fatigue. Revista Brasileira de Medicina do Esporte, 23(3), 246-249. https://doi.org/10.1590/1517-869220172303171086
Suzuki, Frank Shiguemitsu ; Kalytczak, Marcelo Martins ; Ferreira Palomares, Rodrigo Augusto ; Silva, Sergio Matias ; Politi, Fabiano ; Sbampato, Adriana Jaime ; Serra, Andrey Jorge ; Evangelista, Alexandre Lopes ; Castilho Alonso, Angélica ; Figueira Junior, Aylton ; Buchan, Duncan ; Baker, Julien ; Bocalini, Danilo Sales . / Alterations in peak torque do not occur with hematological changes after muscle fatigue. In: Revista Brasileira de Medicina do Esporte. 2017 ; Vol. 23, No. 3. pp. 246-249.
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title = "Alterations in peak torque do not occur with hematological changes after muscle fatigue",
abstract = "Introduction: Muscular fatigue during voluntary muscle contractions is a complex and multifactorial phenomenon associated with central changes and adaptations of the neuromuscular system. Objective: The aim of this study was to analyze the changes in both peak torque and hematological parameters in active and inactive healthy subjects following a muscular fatigue protocol. Methods: Twenty-one healthy adult males performed a muscle fatigue protocol (10 sets, 10 repetitions of knee extension at 75{\%} of the maximal isometric torque (MIT), 120°s-1 and 40 seconds of rest). Hematocrit (Ht), red blood cells (RBC) and leukocytes (L) analysis were evaluated before (B) and after (A) a fatigue test. Results: The inactive group presented impairment only in concentric muscular action of -41±4{\%} in relation to the active (-23±3{\%}) group. No differences were found in hematological parameters in inactive group (Ht, B: 45.00±0.01 vs. A: 47.00±0.01; RBC, B: 442±40 vs. A: 487±41; L, B: 7,565±2,878 vs. A: 8,015±4,224) and the active group (Ht, B: 45.00±0.63 vs. A: 47.00±0.01; RBC, B: 477±30 vs. A: 559±37; L, B: 6,418±3,557 vs. A: 6,632±4,460). Conclusion: Differences were found only in concentric actions between groups. Additionally, there were no relationships found in hematological parameters between groups.",
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Suzuki, FS, Kalytczak, MM, Ferreira Palomares, RA, Silva, SM, Politi, F, Sbampato, AJ, Serra, AJ, Evangelista, AL, Castilho Alonso, A, Figueira Junior, A, Buchan, D, Baker, J & Bocalini, DS 2017, 'Alterations in peak torque do not occur with hematological changes after muscle fatigue' Revista Brasileira de Medicina do Esporte, vol. 23, no. 3, pp. 246-249. https://doi.org/10.1590/1517-869220172303171086

Alterations in peak torque do not occur with hematological changes after muscle fatigue. / Suzuki, Frank Shiguemitsu ; Kalytczak, Marcelo Martins ; Ferreira Palomares, Rodrigo Augusto ; Silva, Sergio Matias ; Politi, Fabiano ; Sbampato, Adriana Jaime ; Serra, Andrey Jorge ; Evangelista, Alexandre Lopes ; Castilho Alonso, Angélica ; Figueira Junior, Aylton ; Buchan, Duncan; Baker, Julien; Bocalini, Danilo Sales .

In: Revista Brasileira de Medicina do Esporte, Vol. 23, No. 3, 01.05.2017, p. 246-249.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Alterations in peak torque do not occur with hematological changes after muscle fatigue

AU - Suzuki, Frank Shiguemitsu

AU - Kalytczak, Marcelo Martins

AU - Ferreira Palomares, Rodrigo Augusto

AU - Silva, Sergio Matias

AU - Politi, Fabiano

AU - Sbampato, Adriana Jaime

AU - Serra, Andrey Jorge

AU - Evangelista, Alexandre Lopes

AU - Castilho Alonso, Angélica

AU - Figueira Junior, Aylton

AU - Buchan, Duncan

AU - Baker, Julien

AU - Bocalini, Danilo Sales

PY - 2017/5/1

Y1 - 2017/5/1

N2 - Introduction: Muscular fatigue during voluntary muscle contractions is a complex and multifactorial phenomenon associated with central changes and adaptations of the neuromuscular system. Objective: The aim of this study was to analyze the changes in both peak torque and hematological parameters in active and inactive healthy subjects following a muscular fatigue protocol. Methods: Twenty-one healthy adult males performed a muscle fatigue protocol (10 sets, 10 repetitions of knee extension at 75% of the maximal isometric torque (MIT), 120°s-1 and 40 seconds of rest). Hematocrit (Ht), red blood cells (RBC) and leukocytes (L) analysis were evaluated before (B) and after (A) a fatigue test. Results: The inactive group presented impairment only in concentric muscular action of -41±4% in relation to the active (-23±3%) group. No differences were found in hematological parameters in inactive group (Ht, B: 45.00±0.01 vs. A: 47.00±0.01; RBC, B: 442±40 vs. A: 487±41; L, B: 7,565±2,878 vs. A: 8,015±4,224) and the active group (Ht, B: 45.00±0.63 vs. A: 47.00±0.01; RBC, B: 477±30 vs. A: 559±37; L, B: 6,418±3,557 vs. A: 6,632±4,460). Conclusion: Differences were found only in concentric actions between groups. Additionally, there were no relationships found in hematological parameters between groups.

AB - Introduction: Muscular fatigue during voluntary muscle contractions is a complex and multifactorial phenomenon associated with central changes and adaptations of the neuromuscular system. Objective: The aim of this study was to analyze the changes in both peak torque and hematological parameters in active and inactive healthy subjects following a muscular fatigue protocol. Methods: Twenty-one healthy adult males performed a muscle fatigue protocol (10 sets, 10 repetitions of knee extension at 75% of the maximal isometric torque (MIT), 120°s-1 and 40 seconds of rest). Hematocrit (Ht), red blood cells (RBC) and leukocytes (L) analysis were evaluated before (B) and after (A) a fatigue test. Results: The inactive group presented impairment only in concentric muscular action of -41±4% in relation to the active (-23±3%) group. No differences were found in hematological parameters in inactive group (Ht, B: 45.00±0.01 vs. A: 47.00±0.01; RBC, B: 442±40 vs. A: 487±41; L, B: 7,565±2,878 vs. A: 8,015±4,224) and the active group (Ht, B: 45.00±0.63 vs. A: 47.00±0.01; RBC, B: 477±30 vs. A: 559±37; L, B: 6,418±3,557 vs. A: 6,632±4,460). Conclusion: Differences were found only in concentric actions between groups. Additionally, there were no relationships found in hematological parameters between groups.

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DO - 10.1590/1517-869220172303171086

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SP - 246

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JO - Revista Brasileira de Medicina do Esporte

JF - Revista Brasileira de Medicina do Esporte

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Suzuki FS, Kalytczak MM, Ferreira Palomares RA, Silva SM, Politi F, Sbampato AJ et al. Alterations in peak torque do not occur with hematological changes after muscle fatigue. Revista Brasileira de Medicina do Esporte. 2017 May 1;23(3):246-249. https://doi.org/10.1590/1517-869220172303171086