Abstract
BackgroundA single nutrient or dietary pattern has been associated with physical performance. However, little is still known about the association of overall dietary quality with physical performance. This study aimed to investigate the link between the recommended food score (RFS), defined as an indicator of overall diet quality, and physical performance among the Korean elderly aged over 65 years.MethodsThe study subjects consisted of 622 participants (294 men and 328 women) aged over 65 years from the 2014–2015 National Fitness Award project.ResultsThe mean value of RFS was higher in elderly women (30.7 ± 7.6) than elderly men (29.5 ± 8.8), but the difference was only marginally significant (P = 0.065). In elderly women, multiple regression linear models, adjusted for potential confounders, showed that RFS was positively related to absolute hand grip strength (kg) (ß = 0.066, 95% CI = 0.010 to 0.122) and relative hand grip strength (%) (ß =0.109, 95% CI = 0.016 to 0.201); other physical performance indicators did not show any association with RFS. In elderly men, none of the physical performance indexes were associated with RFS.ConclusionsThese results suggest that a better overall diet quality may be associated with improved grip strength among elderly women in Korea.
Highlights
A single nutrient or dietary pattern has been associated with physical performance
The mean height, weight, and lean body mass were higher in men than women, whereas the mean Body mass index (BMI) and body fat percentage were higher in women
Correlation between recommended food score (RFS) and physical performances In women, RFS was positively correlated with absolute hand grip strength (r = 0.149, P = 0.007) and negatively correlated with figure-of-8 walk test (F8W) (r = − 0.113, P = 0.041)
Summary
A single nutrient or dietary pattern has been associated with physical performance. little is still known about the association of overall dietary quality with physical performance. South Korea has become one of the most rapidly aging nations because of a sharp decline in the general fertility rate and an increase in life expectancy at birth This trend has given rise to many problems associated with the elderly [2, 3]. Poor physical performance in later life has serious health consequences for individuals regarding disability [8, 9], loss of independence [10], as well as mortality [11], and can lead to an increased need for healthcare and social care [12]. Despite this importance, there is currently a lack of understanding of the factors that affect physical performance
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