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burden ( 5 ). Its onset may be as early as young adulthood ( 6 ). One of the diagnostic criteria of sarcopenia is decreased handgrip strength, a reliable proxy of overall muscle function, which can be measured easily and objectively ( 4 , 5 ). Both
Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
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). Participants were invited for physical assessment which consisted of height, weight, WC, timed-up-and-go (TUG) test ( 23 ), and hand grip strength (HGS). WC was measured midpoint between the last rib and iliac crest. The HGS was measured three times in each
Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
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Steno Diabetes Center Odense, Odense University Hospital, Odense, Denmark
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). Muscle strength test Handgrip muscle strength test was evaluated by a JAMAR hydraulic hand dynamometer (Sammons Preston Rolyan, Bolingbrook, IL, USA), where the individual subject was given three attempts with the dominant hand and the best attempt was
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confounding effects of training (15) . In a trial by Wicherts et al . there were no between-group or within-group differences in the chair stand test and handgrip strength after 6 months of vitamin D supplementation in participants with a mean age of 41
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women with PCOS and 40 controls, those with PCOS showed greater muscle strength (bench press, leg extension and handgrip strength), irrespective of body composition ( 61 ). Serum levels of testosterone correlated positively with increased muscle strength
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Department of Respiratory, Shandong Provincial Qianfoshan Hospital, Shandong University, The First Affiliated Hospital of Shandong First Medical University, Shandong Institute of Respiratory Diseases, Jinan, China
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. ( https://doi.org/10.3109/15412555.2013.808614 ) 38 Lazarus R Sparrow D Weiss ST . Handgrip strength and insulin levels: cross-sectional and prospective associations in the Normative Aging Study . Metabolism: Clinical and Experimental 1997 46