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Physical Performance, Anthropometrics and Functional Characteristics Influence the Intensity of Nonspecific Chronic Low Back Pain in Military Police Officers

1
Department of Physical Education, Federal Technological University of Paraná, Universidade Tecnológica Federal do Paraná-UTFPR, Pedro Gusso Street, Neoville, 2601, Curitiba, Paraná CEP 81310-300, Brazil
2
Department of Physical Education, Centro Politécnico–, Universidade Federal do Paraná-UFPR, Rua Coronel Francisco H. dos Santos, 100, Jardim das Américas, Curitiba, Paraná CEP 81530-000, Brazil
3
Military Police Academy of Guatupê Curitiba/PR, Polícia Militar do Paraná-PMPR, BR-277 Km 72-Afonso Pena, Curitiba, Paraná CEP 81530-245, Brazil
4
Department Medical, Curitiba/PR, Medical Department of Paraná Military Police Officers, Polícia Militar do Paraná-PMPR, Avenue Prefeito Omar Sabbag, 894, Jardim Botânico, Curitiba, Paraná CEP 80210-000, Brazil
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2020, 17(17), 6434; https://doi.org/10.3390/ijerph17176434
Received: 15 July 2020 / Revised: 7 August 2020 / Accepted: 14 August 2020 / Published: 3 September 2020
(This article belongs to the Section Health Behavior, Chronic Disease and Health Promotion)
Background: Chronic low back pain (CLBP) is a serious problem in Military Police Officers (MPO), which accounts for up to 45% of the sick leave rates. It has been assumed that the strength and the endurance of trunk flexor and extensor muscles are CLPB key factors, but it is not known whether these attributes are related to pain intensity. It was aimed to determine whether the strength and endurance of trunk flexor and extensor muscles differ in MPO with no pain (CON; n = 24), moderate (MOD; n = 42), and severe (SEV; n = 37) nonspecific chronic low back pain (CLBP). Methods: The peak torque and endurance test of trunk flexor (PTF.BM−1) and extensor (PTE.BM−1) muscles were compared. A multiple regression analysis was used to identify pain intensity predictors in all groups (PAIN) and according to pain intensity (MOD and SEV). Results: The PTF.BM−1 was negatively related to pain and was a significant predictor, irrespective of pain intensity (PAIN). Conclusion: When pain intensity was considered the PTF.BM−1 and PTE.BM−1 explained the pain in the MOD, while the PTE.BM−1 and service time explained pain intensity in the SEV. Endurance of the flexor and extensor muscles was not related to pain intensity. These results indicated that training protocols must emphasize specific strengthening routines. View Full-Text
Keywords: trunk strength; trunk resistance; chronic low back pain trunk strength; trunk resistance; chronic low back pain
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Tavares, J.M.A.; Rodacki, A.L.F.; Hoflinger, F.; dos Santos Cabral, A.; Paulo, A.C.; Rodacki, C.L.N. Physical Performance, Anthropometrics and Functional Characteristics Influence the Intensity of Nonspecific Chronic Low Back Pain in Military Police Officers. Int. J. Environ. Res. Public Health 2020, 17, 6434.

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