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Context: Studies developed the frail elderly handgrip strength (HGS) diagnostic criteria using multiple types of handgrip dynamometers. If different handgrip dynamometers report different values, then this would have the potential to misclassify people into the wrong diagnostic category.
Objective: To examine the characteristics of HGS measured by 2 standard handgrip dynamometers and to investigate the influence of hand size on HGS.
Setting: University research laboratory.
Participants: A total of 87 young and middle-aged adults between the ages of 20 and 60 years participated in this study.
Main Outcome Measures: Standard methods of HGS measurements were used for hydraulic and Smedley spring-type dynamometers, although the participants were instructed to maintain an upright standing position in both tests.
Results: Test-retest reliability of hydraulic and Smedley dynamometers provided comparable results to that observed with previous studies. However, the difference in HGS between the 2 dynamometers (Hydraulic-Smedley difference) was positively associated (r = .670, P < .001) with the mean of the 2 dynamometers. The participants who had relatively low HGS (at least <35 kg) produced similar HGS values when the 2 dynamometers were compared, whereas persons who had relatively higher HGS (at least >45 kg) produced greater strength values with the hydraulic compared with the Smedley. The hand and palm lengths were weakly correlated (r = .349 and r = .358, respectively, both Ps < .001) with the difference in HGS between the 2 dynamometers.
Conclusions: Test-retest reliability of hydraulic and Smedley dynamometers provides comparable results to previous studies. However, the difference in HGS between the 2 dynamometers was positively associated with the mean of the 2 dynamometers. This Hydraulic-Smedley difference would not affect persons who have relatively low HGS (at least <35 kg), while when HGS is relatively high, the comparison between dynamometers should be done with caution.
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http://dx.doi.org/10.1123/jsr.2017-0189 | DOI Listing |
Int J Gen Med
August 2025
Department of Geriatrics, HSU Balıkesir Atatürk City Hospital, Balıkesir, Turkey.
Background: This study aimed to examine the association between oral health-related quality of life and probable sarcopenia in community-dwelling older adults, and to evaluate the potential role of oral health assessment in routine geriatric care.
Methods: This cross-sectional study included 315 individuals aged ≥65 years who were registered with the Home Health Unit and the Geriatric Outpatient Clinic of a tertiary hospital in Türkiye. Oral health-related quality of life was measured using the Geriatric Oral Health Assessment Index (GOHAI).
PeerJ
September 2025
Faculty of Health Sciences and Psychology, Medical College, University of Rzeszów, Rzeszów, Poland.
Background: The study aimed to determine and compare selected variables of body composition, upper limb strength, and resting energy expenditure from the perspective of field position in youth soccer players.
Methods: The study group consisted of 189 boys aged 9 to 19 years ( = 14.7 ± 2.
J Chin Med Assoc
September 2025
Section of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.
Background: Muscle damage has recently been recognized as a complication of type 2 diabetes mellitus (T2DM). Impaired muscle function adversely affects physical activity, quality of life, and mortality risk. Moreover, waist circumference (WC) is associated with visceral fat and insulin resistance.
View Article and Find Full Text PDFDiabetes Metab J
September 2025
Division of Geriatrics, Department of Internal Medicine, Erciyes School of Medicine, Erciyes University, Kayseri, Türkiye.
Background: Type 2 diabetes mellitus (T2DM) is common among older adults and may increase the risk of sarcopenia and frailty. This study evaluates the impact of sarcopenia and frailty on 5-year mortality in older adults with T2DM.
Methods: We assessed a cohort study of 447 adults with T2DM who were more than 60 years old.
J Sports Sci
August 2025
College of Sports and Health, Shandong Sport University, Jinan, China.
Sarcopenia, characterised by low muscle mass and muscle strength, is associated with poor health outcomes in older adults. Population-specific cutoffs are crucial for accurate diagnosis. This study aimed to identify the specific cutoff values for handgrip strength (HGS) and skeletal muscle mass index (SMI) to distinguish sarcopenic from non-sarcopenic individuals in the Chinese population.
View Article and Find Full Text PDF