Absolute and Normalized Normative Torque Values of Knee Extensors and Flexors in Healthy Trained Subjects: Asymmetry Questions the Classical Use of Uninjured Limb as Reference
Purpose: To provide normative values of maximal isometric torque of knee extensors and flexors measured at 80° of knee flexion and to characterize the results in healthy subjects practicing activities at risk of anterior cruciate ligament rupture. Methods: Seventy-four trained volunteers (35 male an...
| Главные авторы: | , , , , , |
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| Формат: | Статья |
| Язык: | English |
| Опубликовано: |
Elsevier
2024-02-01
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| Серии: | Arthroscopy, Sports Medicine, and Rehabilitation |
| Online-ссылка: | http://www.sciencedirect.com/science/article/pii/S2666061X23002122 |
| _version_ | 1827346824699052032 |
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| author | Simon Barrué-Belou, P.T., Ph.D. Marc-Antoine Démaret, M.D. Alexis Wurtz, P.T. Alicia Ducloux, M.Eng. François Fourchet, P.T., Ph.D. Hugo Bothorel, M.Eng. |
| author_facet | Simon Barrué-Belou, P.T., Ph.D. Marc-Antoine Démaret, M.D. Alexis Wurtz, P.T. Alicia Ducloux, M.Eng. François Fourchet, P.T., Ph.D. Hugo Bothorel, M.Eng. |
| author_sort | Simon Barrué-Belou, P.T., Ph.D. |
| collection | DOAJ |
| description | Purpose: To provide normative values of maximal isometric torque of knee extensors and flexors measured at 80° of knee flexion and to characterize the results in healthy subjects practicing activities at risk of anterior cruciate ligament rupture. Methods: Seventy-four trained volunteers (35 male and 39 female) aged 18 to 41 years were recruited. They alternately performed 3 maximal voluntary isometric contractions of knee extension and flexion. The maximal voluntary isometric contraction net torque was computed as the mean value of the peak torques recorded over the 3 trials. Results: For women, the absolute torque for extensors was 143.5 ± 34.4 N⋅m (range, 87.7-253.1 N⋅m) and 66.8 ± 13.8 N⋅m (range, 37.5-93.1) for flexors. For men, the absolute torque for extensors was 199.8 ± 47.3 N⋅m (range, 99.3-311.5 N⋅m) and 89.8 ± 21.0 N⋅m (range, 51.8-137.2 N⋅m) for flexors. For women, the body mass normalized torque for extensors was 2.20 ± 0.51 N⋅m.kg−1 (range, 1.22-3.74 N⋅m.kg−1) and 1.04 ± 0.26 N⋅m.kg−1 (range, 0.41-1.50 N⋅m.kg−1) for flexors. For men, the normalized torque for extensors was 2.74 ± 0.58 N⋅m.kg−1 (range, 1.51-4.08 N⋅m.kg−1) and 1.24 ± 0.30 N⋅m.kg−1 (range, 0.64-2.05 N⋅m.kg−1) for flexors. Conclusions: This study provides absolute and normalized normative values of maximal isometric torque measured at 80° of knee flexion for extensors and flexors in a series of healthy trained subjects practicing activities at risk of anterior cruciate ligament rupture. The considerable level of interlimb asymmetry and the weak association between dominance and strength observed in uninjured subjects call into question the classical use of contralateral side as reference for injured patients. Clinical Relevance: Patients with anterior cruciate ligament (ACL) injuries are the most represented subjects using isokinetic dynamometers in many sport medicine and rehabilitation departments. Clinicians need reference values to compare patients with ACL injuries with comparable healthy subjects. This study may provide this information. |
| first_indexed | 2024-03-07T23:38:18Z |
| format | Article |
| id | doaj.art-6a064fa043ba438795c06424001a0335 |
| institution | Directory Open Access Journal |
| issn | 2666-061X |
| language | English |
| last_indexed | 2024-03-07T23:38:18Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arthroscopy, Sports Medicine, and Rehabilitation |
| spelling | doaj.art-6a064fa043ba438795c06424001a03352024-02-20T04:19:50ZengElsevierArthroscopy, Sports Medicine, and Rehabilitation2666-061X2024-02-0161100861Absolute and Normalized Normative Torque Values of Knee Extensors and Flexors in Healthy Trained Subjects: Asymmetry Questions the Classical Use of Uninjured Limb as ReferenceSimon Barrué-Belou, P.T., Ph.D.0Marc-Antoine Démaret, M.D.1Alexis Wurtz, P.T.2Alicia Ducloux, M.Eng.3François Fourchet, P.T., Ph.D.4Hugo Bothorel, M.Eng.5Physiotherapy Department and Motion Analysis Lab, Swiss Olympic Medical Center, La Tour Hospital, Meyrin, Switzerland; Sports University Clinic, Toulouse University Hospital, Toulouse, France; Address correspondence to Simon Barrué-Belou, Physiotherapy Department and Motion Analysis Lab, La Tour Hospital, Av. J.-D. Maillard 3, 1217 Meyrin, Switzerland.Sports University Clinic, Toulouse University Hospital, Toulouse, France; Swiss Olympic Medical Center Cressy Santé - University Hospitals of Geneva, Geneva, SwitzerlandPhysiotherapy Department and Motion Analysis Lab, Swiss Olympic Medical Center, La Tour Hospital, Meyrin, SwitzerlandPhysiotherapy Department and Motion Analysis Lab, Swiss Olympic Medical Center, La Tour Hospital, Meyrin, Switzerland; Research Department, La Tour Hospital, Meyrin, SwitzerlandPhysiotherapy Department and Motion Analysis Lab, Swiss Olympic Medical Center, La Tour Hospital, Meyrin, SwitzerlandResearch Department, La Tour Hospital, Meyrin, SwitzerlandPurpose: To provide normative values of maximal isometric torque of knee extensors and flexors measured at 80° of knee flexion and to characterize the results in healthy subjects practicing activities at risk of anterior cruciate ligament rupture. Methods: Seventy-four trained volunteers (35 male and 39 female) aged 18 to 41 years were recruited. They alternately performed 3 maximal voluntary isometric contractions of knee extension and flexion. The maximal voluntary isometric contraction net torque was computed as the mean value of the peak torques recorded over the 3 trials. Results: For women, the absolute torque for extensors was 143.5 ± 34.4 N⋅m (range, 87.7-253.1 N⋅m) and 66.8 ± 13.8 N⋅m (range, 37.5-93.1) for flexors. For men, the absolute torque for extensors was 199.8 ± 47.3 N⋅m (range, 99.3-311.5 N⋅m) and 89.8 ± 21.0 N⋅m (range, 51.8-137.2 N⋅m) for flexors. For women, the body mass normalized torque for extensors was 2.20 ± 0.51 N⋅m.kg−1 (range, 1.22-3.74 N⋅m.kg−1) and 1.04 ± 0.26 N⋅m.kg−1 (range, 0.41-1.50 N⋅m.kg−1) for flexors. For men, the normalized torque for extensors was 2.74 ± 0.58 N⋅m.kg−1 (range, 1.51-4.08 N⋅m.kg−1) and 1.24 ± 0.30 N⋅m.kg−1 (range, 0.64-2.05 N⋅m.kg−1) for flexors. Conclusions: This study provides absolute and normalized normative values of maximal isometric torque measured at 80° of knee flexion for extensors and flexors in a series of healthy trained subjects practicing activities at risk of anterior cruciate ligament rupture. The considerable level of interlimb asymmetry and the weak association between dominance and strength observed in uninjured subjects call into question the classical use of contralateral side as reference for injured patients. Clinical Relevance: Patients with anterior cruciate ligament (ACL) injuries are the most represented subjects using isokinetic dynamometers in many sport medicine and rehabilitation departments. Clinicians need reference values to compare patients with ACL injuries with comparable healthy subjects. This study may provide this information.http://www.sciencedirect.com/science/article/pii/S2666061X23002122 |
| spellingShingle | Simon Barrué-Belou, P.T., Ph.D. Marc-Antoine Démaret, M.D. Alexis Wurtz, P.T. Alicia Ducloux, M.Eng. François Fourchet, P.T., Ph.D. Hugo Bothorel, M.Eng. Absolute and Normalized Normative Torque Values of Knee Extensors and Flexors in Healthy Trained Subjects: Asymmetry Questions the Classical Use of Uninjured Limb as Reference Arthroscopy, Sports Medicine, and Rehabilitation |
| title | Absolute and Normalized Normative Torque Values of Knee Extensors and Flexors in Healthy Trained Subjects: Asymmetry Questions the Classical Use of Uninjured Limb as Reference |
| title_full | Absolute and Normalized Normative Torque Values of Knee Extensors and Flexors in Healthy Trained Subjects: Asymmetry Questions the Classical Use of Uninjured Limb as Reference |
| title_fullStr | Absolute and Normalized Normative Torque Values of Knee Extensors and Flexors in Healthy Trained Subjects: Asymmetry Questions the Classical Use of Uninjured Limb as Reference |
| title_full_unstemmed | Absolute and Normalized Normative Torque Values of Knee Extensors and Flexors in Healthy Trained Subjects: Asymmetry Questions the Classical Use of Uninjured Limb as Reference |
| title_short | Absolute and Normalized Normative Torque Values of Knee Extensors and Flexors in Healthy Trained Subjects: Asymmetry Questions the Classical Use of Uninjured Limb as Reference |
| title_sort | absolute and normalized normative torque values of knee extensors and flexors in healthy trained subjects asymmetry questions the classical use of uninjured limb as reference |
| url | http://www.sciencedirect.com/science/article/pii/S2666061X23002122 |
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