The effect of ageing on skeletal muscle as assessed by quantitative MR imaging: an association with frailty and muscle strength.
Ageing
Frailty
MRI
Muscle
Sarcopenia
T2
Journal
Aging clinical and experimental research
ISSN: 1720-8319
Titre abrégé: Aging Clin Exp Res
Pays: Germany
ID NLM: 101132995
Informations de publication
Date de publication:
Feb 2021
Feb 2021
Historique:
received:
27
01
2020
accepted:
04
03
2020
pubmed:
22
3
2020
medline:
3
3
2021
entrez:
22
3
2020
Statut:
ppublish
Résumé
Skeletal muscles undergo changes with ageing which can cause sarcopenia that can result in frailty. Quantitative MRI may detect the muscle-deficit component of frailty which could help improve the understanding of ageing muscles. To investigate whether quantitative MRI measures of T2, fat fraction (FF), diffusion tensor imaging and muscle volume can detect differences within the muscles between three age groups, and to assess how these measures compare with frailty index, gait speed and muscle power. 18 'young' (18-30 years), 18 'middle-aged' (31-68 years) and 18 'older' (> 69 years) healthy participants were recruited. Participants had an MRI of their dominant thigh. Knee extension and flexion power and handgrip strength were measured. Frailty (English Longitudinal Study of Ageing frailty index) and gait speed were measured in the older participants. Young participants had a lower muscle MRI T2, FF and mean diffusivity than middle-aged and older participants; middle-aged participants had lower values than older participants. Young participants had greater muscle flexion and extension power, muscle volume and stronger hand grip than middle-aged and older participants; middle-aged participants had greater values than the older participants. Quantitative MRI measurements correlated with frailty index, gait speed, grip strength and muscle power. Quantitative MRI and strength measurements can detect muscle differences due to ageing. Older participants had raised T2, FF and mean diffusivity and lower muscle volume, grip strength and muscle power. Quantitative MRI measurements correlate with frailty and muscle function and could be used for identifying differences across age groups within muscle.
Sections du résumé
BACKGROUND
BACKGROUND
Skeletal muscles undergo changes with ageing which can cause sarcopenia that can result in frailty. Quantitative MRI may detect the muscle-deficit component of frailty which could help improve the understanding of ageing muscles.
AIMS
OBJECTIVE
To investigate whether quantitative MRI measures of T2, fat fraction (FF), diffusion tensor imaging and muscle volume can detect differences within the muscles between three age groups, and to assess how these measures compare with frailty index, gait speed and muscle power.
METHODS
METHODS
18 'young' (18-30 years), 18 'middle-aged' (31-68 years) and 18 'older' (> 69 years) healthy participants were recruited. Participants had an MRI of their dominant thigh. Knee extension and flexion power and handgrip strength were measured. Frailty (English Longitudinal Study of Ageing frailty index) and gait speed were measured in the older participants.
RESULTS
RESULTS
Young participants had a lower muscle MRI T2, FF and mean diffusivity than middle-aged and older participants; middle-aged participants had lower values than older participants. Young participants had greater muscle flexion and extension power, muscle volume and stronger hand grip than middle-aged and older participants; middle-aged participants had greater values than the older participants. Quantitative MRI measurements correlated with frailty index, gait speed, grip strength and muscle power.
DISCUSSION
CONCLUSIONS
Quantitative MRI and strength measurements can detect muscle differences due to ageing. Older participants had raised T2, FF and mean diffusivity and lower muscle volume, grip strength and muscle power.
CONCLUSIONS
CONCLUSIONS
Quantitative MRI measurements correlate with frailty and muscle function and could be used for identifying differences across age groups within muscle.
Identifiants
pubmed: 32198628
doi: 10.1007/s40520-020-01530-2
pii: 10.1007/s40520-020-01530-2
pmc: PMC7914187
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
291-301Subventions
Organisme : Department of Health
ID : ICA-CL-2016-02-017
Pays : United Kingdom
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