Dairy Consumption is Associated with Body Composition, Physical Function and Frailty in Community‐Dwelling Older Adults: The Quebec NuAge Longitudinal Study
Notice bibliographique
Résumé
Background Despite the potential contribution of dietary factors to healthy aging, the role of dairy products, as part of the diet, on body composition and physical performance in free‐living older adults has been scarcely studied in longitudinal studies. Objectives Our primary aim was to investigate the association between total dairy intake and body composition and physical performance of older adults from the NuAge longitudinal study on Nutrition and Aging. Our secondary objective was to examine the association between dairy intake and frailty at baseline (T0). Design Participants (n=1499; aged 67–84y,) were assessed for total dairy consumption (servings/d) (milk, cheese, yogurt and dairy‐based desserts) by 6 nonconsecutive 24‐h food recalls collected over 2 years. Body composition was measured by DXA in a subgroup of subjects (54%) at T0 and after 2‐y (T2). Functional composite scores were calculated for muscle strength (handgrip, arm and leg) and mobility (timed up‐&‐go, chair stand, normal and fast walking speed), measured at T0 and annually thereafter for 3 y. Frailty was defined according to Fried et al. 2001 criteria. Mixed‐model analysis was performed to assess trajectories of body composition and function across time per sex, as conditioned by total dairy intake, adjusted for potential covariates. Results Consumption of total and individual dairy products was similar in both sexes, except for high‐fat dairy products and yogurt which were consumed more by men and women, respectively. Higher dairy consumption was independently associated with a higher lean mass (LM) and mobility scores in both sexes, and a better strength score only in men throughout the follow‐up. Interestingly, total dairy intake was inversely associated with fat mass (FM) in women whereas the association was positive in men. Longitudinal declines in LM and functional scores were not associated with dairy consumption. In men, but not in women, the risk of pre‐frailty/frailty was less among high (≥2 servings/d) versus low (<0.6 servings/d) dairy consumers (odds ratio= 0.52; 95% CI=0.30–0.92). Conclusions Our results indicate that greater dairy consumption is associated with better body composition and function, i.e., two major predictors of frailty in aging. However, further research is required to explore the long‐term benefits of dairy product consumption and its potential causative association with healthy aging. Support or Funding Information Dairy Farmers of Canada.
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Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,002 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,001 |
| Bibliométrie | 0,001 | 0,002 |
| Études des sciences et des technologies | 0,001 | 0,000 |
| Communication savante | 0,001 | 0,000 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,001 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,002 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».