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Metabolic cost and co-contraction during walking at different speeds in young and old adults
- Source :
- Gait and Posture, Gait and Posture, Elsevier, 2022, 91, pp.111-116. ⟨10.1016/j.gaitpost.2021.10.014⟩
- Publication Year :
- 2022
- Publisher :
- Elsevier BV, 2022.
-
Abstract
- 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.
- Subjects :
- 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
Subjects
Details
- ISSN :
- 09666362
- Volume :
- 91
- Database :
- OpenAIRE
- Journal :
- Gait & Posture
- Accession number :
- edsair.doi.dedup.....70104377f12daf431f3e0a95a477d411