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Comparative Study
. 2019 Sep 6;14(9):e0222040.
doi: 10.1371/journal.pone.0222040. eCollection 2019.

Comparison between grip strength and grip strength divided by body weight in their relationship with metabolic syndrome and quality of life in the elderly

Se-Woong Chun  1 , Won Kim  2 , Kyoung Hyo Choi  2
Affiliations
Comparative Study

Comparison between grip strength and grip strength divided by body weight in their relationship with metabolic syndrome and quality of life in the elderly

Se-Woong Chun et al. PLoS One. .

Abstract

Strength measures should be normalized by body mass; however, the definition of sarcopenia includes only simple grip strength. Thus, we compared the relationship of grip strength and grip strength divided by body weight or body mass index to two major consequences of sarcopenia, namely metabolic syndrome and poor quality of life. Data from the participants (aged 60 years or older) of the Sixth Korea National Health and Nutrition Examination were analyzed. Metabolic syndrome was defined according to the Adult Treatment Panel III guidelines with some modifications appropriate for Koreans. Quality of life was assessed using the EuroQoL Five-dimension questionnaire. Multiple logistic regression models were used to evaluate the association of grip strength and grip strength divided by body weight with metabolic syndrome and quality of life. A total of 1273 men and 1436 women were included in the analyses. Grip strength was not related to metabolic syndrome, whereas grip strength divided by body weight and grip strength normalized by body mass index revealed a dense dose-response relationship. All measures showed a similar correlation with quality of life. Grip strength divided by body weight can be superior to simple grip strength and grip strength normalized by body mass index in representing the metabolic aspects of sarcopenia.

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Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Fig 1
Fig 1. Flow diagram of study participants.
KNHANES, Korean National Health and Nutrition Examination Survey; BMI, body mass index; EQ-5D, EuroQol Five-dimension.
Fig 2
Fig 2. Grip strength, grip strength/body weight, and grip strength/BMI by age in men.
BMI, body mass index.
Fig 3
Fig 3. Grip strength, grip strength/body weight, and grip strength/BMI by age in women.
BMI, body mass index.
See this image and copyright information in PMC

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