biostudies-literatureUnknown78(12)Villain CNational Cancer InstituteNCI NIH HHS<h4>Background</h4>Sarcopenia diagnosis is partly based on handgrip strength (HGS) assessment. The gold-standard dynamometer for this measurement is the Jamar. The electronic Gripwise is a smaller and lighter one, and its measurements are correlated with the Jamar's in laboratory tests. Our study aimed to confirm this correlation in aged patients.<h4>Methods</h4>This monocenter cross-sectional study was performed in patients of 65 years and older admitted at the University Hospital. Participants were assessed either in a seated or bedridden position, randomly allocated to begin the measurements with the Jamar or the Gripwise.<h4>Results</h4>Among 649 aged inpatients assessed for eligibility, 348 were included (mean age: 79 ± 9; 52% females). The intraclass correlation coefficient was 0.93 (95% confidence interval [CI] 0.92-0.94, p < .001) for the maximum value measured with both devices and 0.94 (95% CI 0.93-0.95, p < .001) for the mean values. However, there was a significant difference in detecting low values (<16 kg in women, <27 kg in men), found in 48% of patients with Jamar, and 71% with Gripwise (p < .001). Thus, we determined alternate cutoffs for diagnosing HGS low values with the Gripwise (<12 kg in women, <22 kg in men), further validated in a supplementary validation population (n = 70). The diagnostic performances of these alternative cutoffs were high (93% sensitivity and 87% specificity in women; 94% sensitivity and 96% specificity in men).<h4>Conclusions</h4>The correlation of the Gripwise with the Jamar was confirmed in aged inpatients. However, lower values recorded with the Gripwise require alternate cutoffs for a relevant low HGS diagnosis.The journals of gerontology. Series A, Biological sciences and medical sciences2458-2465https://www.ebi.ac.uk/biostudies/studies/S-EPMC10692423biostudies-literatureGripwise Versus Jamar: The Challenge of a New Dynamometer Assessing Handgrip Strength.PMC10692423Briant ARFournel FKremer CVillain CLebaube SChavoix CBeauplet BfalseGripwise Versus Jamar: The Challenge of a New Dynamometer Assessing Handgrip Strength.<h4>Background</h4>Sarcopenia diagnosis is partly based on handgrip strength (HGS) assessment. The gold-standard dynamometer for this measurement is the Jamar. The electronic Gripwise is a smaller and lighter one, and its measurements are correlated with the Jamar's in laboratory tests. Our study aimed to confirm this correlation in aged patients.<h4>Methods</h4>This monocenter cross-sectional study was performed in patients of 65 years and older admitted at the University Hospital. Participants were assessed either in a seated or bedridden position, randomly allocated to begin the measurements with the Jamar or the Gripwise.<h4>Results</h4>Among 649 aged inpatients assessed for eligibility, 348 were included (mean age: 79 ± 9; 52% females). The intraclass correlation coefficient was 0.93 (95% confidence interval [CI] 0.92-0.94, p < .001) for the maximum value measured with both devices and 0.94 (95% CI 0.93-0.95, p < .001) for the mean values. However, there was a significant difference in detecting low values (<16 kg in women, <27 kg in men), found in 48% of patients with Jamar, and 71% with Gripwise (p < .001). Thus, we determined alternate cutoffs for diagnosing HGS low values with the Gripwise (<12 kg in women, <22 kg in men), further validated in a supplementary validation population (n = 70). The diagnostic performances of these alternative cutoffs were high (93% sensitivity and 87% specificity in women; 94% sensitivity and 96% specificity in men).<h4>Conclusions</h4>The correlation of the Gripwise with the Jamar was confirmed in aged inpatients. However, lower values recorded with the Gripwise require alternate cutoffs for a relevant low HGS diagnosis.2023-01-01T00:00:00Z2023 Dec2025-04-26T01:17:18.63Z2025-04-06T10:02:01.765ZS-EPMC106924233757894910.1093/gerona/glad198