Metabolic cost and co-contraction during walking at different speeds in young and old adults
| العنوان: | Metabolic cost and co-contraction during walking at different speeds in young and old adults |
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| المؤلفون: | Patricia Duarte Freitas, Raphael Zory, Elodie Piche, Pauline Gerus, Olivier Guérin, Frédéric Chorin |
| المساهمون: | Laboratoire Motricité Humaine Expertise Sport Santé (LAMHESS), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université de Toulon (UTLN)-Université Côte d'Azur (UCA) |
| المصدر: | Gait and Posture Gait and Posture, Elsevier, 2022, 91, pp.111-116. ⟨10.1016/j.gaitpost.2021.10.014⟩ |
| بيانات النشر: | Elsevier BV, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Adult, medicine.medical_specialty, Knee Joint, [SDV]Life Sciences [q-bio], medicine.medical_treatment, Biophysics, Walking, Electromyography, Young Adult, 03 medical and health sciences, 0302 clinical medicine, Physical medicine and rehabilitation, Humans, Medicine, Knee, Orthopedics and Sports Medicine, Treadmill, Young adult, Muscle, Skeletal, Gait, ComputingMilieux_MISCELLANEOUS, Aged, Rehabilitation, medicine.diagnostic_test, business.industry, 030229 sport sciences, Middle Aged, Metabolic cost, Biomechanical Phenomena, Co contraction, Preferred walking speed, medicine.anatomical_structure, Ankle, business, 030217 neurology & neurosurgery |
| الوصف: | Background The net metabolic cost of walking (NCw) and the co-activation of leg muscles are both higher in old adults (OG) than in young adults (YG). Nevertheless, the relation between the two remains unresolved, mainly due to the controversial co-activation measurement method used in previous studies. Research question To compare ankle and knee co-contraction (CCI), calculated using an EMG-driven method, between the groups and to examine their relationship with NCw. Methods Nine young (YG = 25.2 +/- 3.3 years old) and nine older (OG = 68.7 +/5.9 years old) adults walked on a treadmill at five speeds (YG: 1; 1.2; 1.4; 1.6; 1.8 m/s; OG: 0.6; 0.8; 1; 1.2; 1.4 m/s) while electromyography (sEMG) and oxygen consumption were measured. CCI were calculated around the ankle and knee for different parts of the gait cycle (entire gait cycle 0–100 %, stance phase 0–60 %, swing phase 60–100 %). Results NCw was significantly higher (25 %, averaged over the walking speeds) in OG as were Knee_CCI, Knee_CCI_swing and Knee_CCI_stance. Multiple regression models in YG, OG and YG + OG highlighted Ankle_CCI as the main contributor in NCw (β = 0.08−0.188, p Significance The present findings provide a better understanding of the association between muscle co-contraction and metabolic cost in older adults. It may help scientists and clinicians to further develop strategies aimed at neuromuscular rehabilitation as a means of improving mobility and independence among older adults. |
| تدمد: | 0966-6362 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70104377f12daf431f3e0a95a477d411Test https://doi.org/10.1016/j.gaitpost.2021.10.014Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....70104377f12daf431f3e0a95a477d411 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 09666362 |
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