Association Between Dietary Acid Load and Grip Strength in Adults 50 Years and Older: A Cross-Sectional Study.
Calcif Tissue Int
; 115(4): 373-381, 2024 Oct.
Article
de En
| MEDLINE
| ID: mdl-39046548
ABSTRACT
Minimal data exist on whether the acid-base balance of the diet is linked to muscle strength. The aim of this study was to determine if dietary acid load is associated with grip strength in a nationally representative sample of middle- to older-age adults. We examined the cross-sectional association of grip strength with dietary acid load quantified through potential renal acid load (PRAL) and net endogenous acid production (NEAP) in 4,059 adults aged 50 years and older in the 2011-2014 NHANES survey cycles. PRAL and NEAP were estimated from two 24-h recalls and categorized into sex-specific quartiles. Grip strength was measured on a dynamometer. Multiple linear regression models were used to determine the associations of PRAL and NEAP (as quartiles) with grip strength for men and women separately, adjusting for total energy, age, race/ethnicity, weight, physical activity, smoking, serum 25-hydroxyvitamin D, and estimated glomerular filtration rate. Mean grip strength was 26.8 ± 0.2 kg in women and 43.0 ± 0.4 kg in men. Adjusted grip strength was inversely associated with quartiles of PRAL (ptrend = 0.049) and NEAP (ptrend = 0.034) in women with quartile 4 vs 1 differences of - 1.21 and - 1.08 kg (both p < 0.05), respectively. Adjusted grip strength was not associated with PRAL or NEAP in men. Overall, we found inverse associations between dietary acid load and grip strength in middle- and older-age women, suggesting that an alkaline diet may be important in maintaining muscle strength in this population. There was no association between dietary acid load and grip strength in men.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Force de la main
/
Régime alimentaire
Limites:
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Langue:
En
Journal:
Calcif Tissue Int
/
Calcif. tissue int
/
Calcified tissue international
Année:
2024
Type de document:
Article
Pays d'affiliation:
États-Unis d'Amérique
Pays de publication:
États-Unis d'Amérique