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.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.3233/WOR-210015 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Previous short-term disuse dictates muscle gene expression and physiological adaptations to subsequent resistance exercise.
J Physiol
January 2025
Department of Biomedical Sciences, University of Padova, Padova, Italy.
Short-term unloading experienced following injury or hospitalisation induces muscle atrophy and weakness. The effects of exercise following unloading have been scarcely investigated. We investigated the functional and molecular adaptations to a resistance training (RT) programme following short-term unloading.
View Article and Find Full Text PDFMScanFit and StairFit Motor Unit Number Estimation of the Extensor Digitorum Brevis and Abductor Digiti Minimi Muscles.
Muscle Nerve
January 2025
School of Rehabilitation Science and Engineering, University of Health and Rehabilitation Sciences, Qingdao, China.
Introduction/aims: MScanFit and StairFit are two motor unit number estimation (MUNE) methods derived from a compound muscle action potential (CMAP) scan. This study aims to compare MScanFit and StairFit MUNE values by applying both methods to the same muscles.
Methods: CMAP scans were recorded from the extensor digitorum brevis (EDB) and abductor digiti minimi (ADM) muscles.
Influence of cervical muscle strength and pain severity on functional balance and limits of stability in elderly individuals with chronic nonspecific neck pain: a cross-sectional study.
BMC Geriatr
January 2025
Physical Therapy Department, Prince Sultan Military College of Health Sciences, Dhahran, Saudi Arabia.
Background: Chronic nonspecific neck pain (CNSNP) is a common musculoskeletal disorder, particularly in the elderly, leading to reduced cervical muscle strength, impaired functional balance, and decreased postural stability. This study investigated the correlation between cervical muscle strength, functional balance, and limits of stability (LOS) in elderly individuals with CNSNP. Additionally, it assessed the moderating effect of pain severity on the relationship between cervical muscle strength and these balance outcomes.
View Article and Find Full Text PDFComparison of Maximum Isometric Strength of the Hip Joint Abductor and Knee Joint Extensor Muscles between Knee Osteoarthritis Patients with and without Self-reported Instability.
Z Orthop Unfall
January 2025
Institute of Cardiology and Sports Medicine, Department II: Molecular and Cellular Sports Medicine, German Sport University Cologne, Cologne, Germany.
Patients with knee osteoarthritis (KOA) often have impaired muscle function of the weight-bearing muscles, particularly in the knee and hip joints. This can lead to a significant loss of strength and power and may play a role in the perceived instability of the knee joint. The purpose of this study was to compare the maximum isometric strength of the hip abductor and knee extensor muscles between patients with KOA with and without perceived instability.
View Article and Find Full Text PDFComparative analysis of isokinetic parameters in individuals with and without chondromalacia patellae.
J ISAKOS
January 2025
Laboratory Study of Movement, Instituto de Ortopedia e Traumatologia do Hospital das Clínicas (IOT-HC), Faculdade de Medicina, Universidade de São Paulo (FMSUP), São Paulo, SP; Brazil.
Introduction: Chondromalacia patella (CMP) is characterized by cartilage degeneration, affects young adults, more women (2:1) and is responsible for 75% of knee pain complaints in the active population. The etiology is multifactorial and may be related to extrinsic factors (trauma and burden) and intrinsic factors (patellar malalignment and quadriceps weakness). Isokinetic dynamometry (ID) can aid in the detection of the causal factors of knee pain related to CMP.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!