Abstract
To evaluate associations between handgrip strength (HGS) and dietary nutrients, this study of a representative Korean population of 1553 adults aged ≥60 years (706 men and 847 women) analyzed data from the Korea National Health and Nutrition Examination Survey (2016). HGS was measured in both hands three times using a digital grip strength dynamometer. Dietary intake data were collected by the 24-h recall method through computer-assisted personal interviews. The study population had a mean age of 70.1 years, body mass index (BMI) of 24.2 kg/m2, and HGS of 35.7 kg in men, 21.2 kg in women. Total energy (r = 0.411), protein (r = 0.217), polyunsaturated fatty acid (PUFA) (r = 0.269), fiber (r = 0.272), and vitamin C (r = 0.098) were positively correlated with HGS. In multivariable regression analysis, PUFA (β = 0.083) and vitamin C (β = 0.003) were positively associated with HGS among women. Fiber (β = 0.071) and vitamin C (β = 0.006) showed a positive association with HGS among men. Community-dwelling older men and women with higher levels of PUFA, fiber, and vitamin C in their diet were more likely to have greater HGS even after adjusting for age, total calorie intake, BMI, chronic diseases and health-related habits.
Highlights
Aging is the leading risk factor for functional decline, which can have serious health consequences, including loss of independence, hospitalization, and mortality [1]
The results of this study indicate that community-dwelling older men and women with relatively high amounts of polyunsaturated fatty acid (PUFA), dietary fiber, and vitamin C in their diet had an elevated likelihood of higher
There have been no previous reports of associations between PUFA, dietary fiber, and muscle strength in older adults based on a large-scale dataset representative of the general population
Summary
Aging is the leading risk factor for functional decline, which can have serious health consequences, including loss of independence, hospitalization, and mortality [1]. Reduced muscle strength and power are closely associated with adverse health-related outcomes, including loss of independence, increased risk of mobility disability, and mortality (4% increase with every 1 kg decrease in grip strength) [3]. Several quantitative measurements are used to assess progressive decline in muscle strength in older adults, including handgrip strength (HGS) and the Timed Up-and-Go test [2,4]. HGS is the maximum static force applied by the hand, as measured by a dynamometer As it is both simple and inexpensive to evaluate, this measurement is widely applied to assess hand function after injury and the outcome of hand surgery, and to reflect general physical health and disability [5,6]
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