Knee flexor and extensor torque ratio in elderly men and women with and without obesity: a cross-sectional study.
Aging Clin Exp Res
; 34(1): 209-214, 2022 Jan.
Article
en En
| MEDLINE
| ID: mdl-33991332
ABSTRACT
BACKGROUND:
With aging and obesity lower limb torque deteriorates. Importantly, the ratio between knee flexor (KF) and extensor (KE) torque is an indicator of joint stability.AIMS:
We compared KF torque and KF/KE ratio in older subjects of both sexes with obesity (OB) or without (NOB) obesity.METHODS:
The maximal torque during KE and KF isokinetic contractions were evaluated at 60, 90, 150, 180 and 210 deg/s in 89 elderly (68 ± 5 years) subjects with NOB (BMI < 30 kg/m2) and OB (BMI ≥ 30 kg/m2). Values were normalised for body weight (BW) and leg lean mass (i.e., muscle quality).RESULTS:
At all speeds men had higher absolute KF values (P < 0.001). When values were normalised for BW, sex differences remain in favour of men (P < 0.001) with lower values in both groups with OB than NOB (P < 0.001). Muscle quality and KF/KE ratio were lower in OB than NOB (P < 0.001).CONCLUSIONS:
The KF torque and KF/KE ratio decline with aging and with OB. In all groups, the KF/KE ratio was below the joint stability threshold. Thus, exercise physiologists should include exercises designed to train both KE and KF in older subjects with OB.Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Músculo Esquelético
/
Rodilla
Tipo de estudio:
Observational_studies
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Prevalence_studies
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Risk_factors_studies
Límite:
Aged
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Female
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Humans
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Male
Idioma:
En
Año:
2022
Tipo del documento:
Article