Muscle strength in Brazilian firefighters with non-specific chronic low back pain: A cross-sectional study

Flavia Marques Pedrosa; Alexandre Lima De Araújo Ribeiro; Daltro Izaias Pelozato De Oliveira; Monaliza De Sousa Araújo; Sacha Clael; Ricardo M. Lima; Rodrigo Luiz Carregaro; Wagner Rodrigues Martins

doi:10.3233/WOR-210015

Muscle strength in Brazilian firefighters with non-specific chronic low back pain: A cross-sectional study

Flavia Marques Pedrosa
, Alexandre Lima De Araújo Ribeiro
, Daltro Izaias Pelozato De Oliveira
, Monaliza De Sousa Araújo
, Sacha Clael
, Ricardo M. Lima
, Rodrigo Luiz Carregaro
, Wagner Rodrigues Martins

Health Sciences

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

BACKGROUND: Imbalance between flexor and extensor muscles of the trunk could negatively influence spinal stability.

OBJECTIVES: Investigate the strength balance between flexor and extensor muscles of the trunk in military firefighters with non-specific chronic low back pain (NSCLBP).

METHODS: One hundred and two male firefighters were assessed in an isokinetic dynamometer at 120°/s and 60°/s to investigate the balance ratio between flexor and extensor (F/E) muscles.

RESULTS: An F/E ratio of 0.72 (SD: 0.22; 95% CI: 0.67-0.76; SEM: 0.02) was observed at 60°/s and 0.94 (SD: 0.41; 95% CI: 0.85-1.03; SEM: 0.04) at 120°/s. The mean peak torque of the extensor muscles was 343.1 N.m/Kg (SD: 94.87; 95% CI: 322.8-363.5; SEM: 10.23) at 60°/s and 270.5 N.m/Kg (SD: 113; 95% CI 246.3-294.8; SEM: 12.18) at 120°/s. The mean peak torque of the flexor muscles was 232.4 N.m/Kg (SD: 53.86; 95% CI 220.8-243.9; SEM: 5.81) at 60°/s and 223.8 N.m/Kg (SD: 66.34; 95% CI 209.6-238.1; SEM: 7.15) at 120°/s. All torques generated by the extensor muscles were higher than the flexor muscles (p < 0.05).

CONCLUSIONS: Firefighters with NSCLBP presented a normal F/E balance ratio and higher strength of extensor muscles of the trunk.

Original language	English
Pages (from-to)	941-948
Number of pages	8
Journal	WORK
Volume	72
Issue number	3
Early online date	23 May 2022
DOIs	https://doi.org/10.3233/WOR-210015
Publication status	Published - Jul 2022

Bibliographical note

Publisher Copyright:
© 2022 - IOS Press. All rights reserved.

Keywords

low back pain
Isokinetic dynamometer
military firefighters
peak torque
rehabilitation

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10.3233/WOR-210015

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Cite this

@article{d1b9662670684871829f10065c8b0c0f,

title = "Muscle strength in Brazilian firefighters with non-specific chronic low back pain: A cross-sectional study",

abstract = "BACKGROUND: Imbalance between flexor and extensor muscles of the trunk could negatively influence spinal stability.OBJECTIVES: Investigate the strength balance between flexor and extensor muscles of the trunk in military firefighters with non-specific chronic low back pain (NSCLBP).METHODS: One hundred and two male firefighters were assessed in an isokinetic dynamometer at 120°/s and 60°/s to investigate the balance ratio between flexor and extensor (F/E) muscles.RESULTS: An F/E ratio of 0.72 (SD: 0.22; 95\% CI: 0.67-0.76; SEM: 0.02) was observed at 60°/s and 0.94 (SD: 0.41; 95\% CI: 0.85-1.03; SEM: 0.04) at 120°/s. The mean peak torque of the extensor muscles was 343.1 N.m/Kg (SD: 94.87; 95\% CI: 322.8-363.5; SEM: 10.23) at 60°/s and 270.5 N.m/Kg (SD: 113; 95\% CI 246.3-294.8; SEM: 12.18) at 120°/s. The mean peak torque of the flexor muscles was 232.4 N.m/Kg (SD: 53.86; 95\% CI 220.8-243.9; SEM: 5.81) at 60°/s and 223.8 N.m/Kg (SD: 66.34; 95\% CI 209.6-238.1; SEM: 7.15) at 120°/s. All torques generated by the extensor muscles were higher than the flexor muscles (p < 0.05).CONCLUSIONS: Firefighters with NSCLBP presented a normal F/E balance ratio and higher strength of extensor muscles of the trunk.",

keywords = "low back pain, Isokinetic dynamometer, military firefighters, peak torque, rehabilitation",

author = "Pedrosa, \{Flavia Marques\} and Ribeiro, \{Alexandre Lima De Ara{\'u}jo\} and Oliveira, \{Daltro Izaias Pelozato De\} and Ara{\'u}jo, \{Monaliza De Sousa\} and Sacha Clael and Lima, \{Ricardo M.\} and Carregaro, \{Rodrigo Luiz\} and Martins, \{Wagner Rodrigues\}",

year = "2022",

month = jul,

doi = "10.3233/WOR-210015",

language = "English",

volume = "72",

pages = "941--948",

journal = "WORK",

issn = "1051-9815",

publisher = "SAGE Publications Ltd",

number = "3",

}

TY - JOUR

T1 - Muscle strength in Brazilian firefighters with non-specific chronic low back pain

T2 - A cross-sectional study

AU - Pedrosa, Flavia Marques

AU - Ribeiro, Alexandre Lima De Araújo

AU - Oliveira, Daltro Izaias Pelozato De

AU - Araújo, Monaliza De Sousa

AU - Clael, Sacha

AU - Lima, Ricardo M.

AU - Carregaro, Rodrigo Luiz

AU - Martins, Wagner Rodrigues

PY - 2022/7

Y1 - 2022/7

N2 - BACKGROUND: Imbalance between flexor and extensor muscles of the trunk could negatively influence spinal stability.OBJECTIVES: Investigate the strength balance between flexor and extensor muscles of the trunk in military firefighters with non-specific chronic low back pain (NSCLBP).METHODS: One hundred and two male firefighters were assessed in an isokinetic dynamometer at 120°/s and 60°/s to investigate the balance ratio between flexor and extensor (F/E) muscles.RESULTS: An F/E ratio of 0.72 (SD: 0.22; 95% CI: 0.67-0.76; SEM: 0.02) was observed at 60°/s and 0.94 (SD: 0.41; 95% CI: 0.85-1.03; SEM: 0.04) at 120°/s. The mean peak torque of the extensor muscles was 343.1 N.m/Kg (SD: 94.87; 95% CI: 322.8-363.5; SEM: 10.23) at 60°/s and 270.5 N.m/Kg (SD: 113; 95% CI 246.3-294.8; SEM: 12.18) at 120°/s. The mean peak torque of the flexor muscles was 232.4 N.m/Kg (SD: 53.86; 95% CI 220.8-243.9; SEM: 5.81) at 60°/s and 223.8 N.m/Kg (SD: 66.34; 95% CI 209.6-238.1; SEM: 7.15) at 120°/s. All torques generated by the extensor muscles were higher than the flexor muscles (p < 0.05).CONCLUSIONS: Firefighters with NSCLBP presented a normal F/E balance ratio and higher strength of extensor muscles of the trunk.

AB - BACKGROUND: Imbalance between flexor and extensor muscles of the trunk could negatively influence spinal stability.OBJECTIVES: Investigate the strength balance between flexor and extensor muscles of the trunk in military firefighters with non-specific chronic low back pain (NSCLBP).METHODS: One hundred and two male firefighters were assessed in an isokinetic dynamometer at 120°/s and 60°/s to investigate the balance ratio between flexor and extensor (F/E) muscles.RESULTS: An F/E ratio of 0.72 (SD: 0.22; 95% CI: 0.67-0.76; SEM: 0.02) was observed at 60°/s and 0.94 (SD: 0.41; 95% CI: 0.85-1.03; SEM: 0.04) at 120°/s. The mean peak torque of the extensor muscles was 343.1 N.m/Kg (SD: 94.87; 95% CI: 322.8-363.5; SEM: 10.23) at 60°/s and 270.5 N.m/Kg (SD: 113; 95% CI 246.3-294.8; SEM: 12.18) at 120°/s. The mean peak torque of the flexor muscles was 232.4 N.m/Kg (SD: 53.86; 95% CI 220.8-243.9; SEM: 5.81) at 60°/s and 223.8 N.m/Kg (SD: 66.34; 95% CI 209.6-238.1; SEM: 7.15) at 120°/s. All torques generated by the extensor muscles were higher than the flexor muscles (p < 0.05).CONCLUSIONS: Firefighters with NSCLBP presented a normal F/E balance ratio and higher strength of extensor muscles of the trunk.

KW - low back pain

KW - Isokinetic dynamometer

KW - military firefighters

KW - peak torque

KW - rehabilitation

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UR - https://www.scopus.com/pages/publications/85134460378#tab=citedBy

U2 - 10.3233/WOR-210015

DO - 10.3233/WOR-210015

M3 - Article

C2 - 35634820

AN - SCOPUS:85134460378

SN - 1051-9815

VL - 72

SP - 941

EP - 948

JO - WORK

JF - WORK

IS - 3

ER -

Muscle strength in Brazilian firefighters with non-specific chronic low back pain: A cross-sectional study

Abstract

Bibliographical note

Keywords

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