ArticlePloS one2022
Validity and reliability of handgrip dynamometry in older adults: A comparison of two widely used dynamometers.
Article in PloS one, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07382999 (Effect of Adherence to a Gluten-Free Diet on Cognitive and Motor Dual-Task Performance in Adolescents Diagnosed With Celiac Disease), which is not on this map. Cited by 45 papers, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Effect of Adherence to a Gluten-Free Diet on Cognitive and Motor Dual-Task Performance in Adolescents Diagnosed With Celiac Disease
Who cites it
45 citing papers in PubMed, 1 synthesis or guideline pooled it, 66 citations in OpenAlex.
- Physical Performance Tests in 8008 Competitive Youth Tennis Players-A Systematic Review and Meta-Analysis of Normative Values.European journal of sport science · 2025Pooled it
- Validity, reliability, and diagnostic accuracy of the InGrip digital dynamometer compared with the Jamar hydraulic model in older adults.European geriatric medicine · 2026Trial
- Trial
- FallFitness exercise program provided using the train-the-trainer approach for community-dwelling older adults: a randomized controlled trial.BMC geriatrics · 2024Trial
- Establishing reference values for handgrip strength in Turkish adults: a population-based approach to sarcopenia diagnosis.Irish journal of medical science · 2026Article
- Validation of a Low-Cost Handheld Dynamometer Against a Standard Device for Handgrip Strength Assessment in Stable Outpatients with Cirrhosis.Journal of frailty, sarcopenia and falls · 2026Article
- Intraday and Interday Reliability of Maximal and Explosive Handgrip Force-Time Metrics Using the Kinvent K-Grip Handheld Dynamometer.Muscles (Basel, Switzerland) · 2026Article
- Epigenome-wide exploratory study of blood DNA methylation and markers of physical performance indicates subtle differences across levels of cardiovascular fitness.Frontiers in physiology · 2026Article
- Article
- Relaxed Stiffness of Lower Extremity Muscles and Step Width Variability as Key Differences Between Sarcopenia and Dynapenia in Community-Dwelling Older Adults: A Cross-Sectional Study.Life (Basel, Switzerland) · 2025Article
- Food insecurity and its association with the quality of life of older individuals: a cross-sectional study.BMC geriatrics · 2025Article
- The effect of a forearm-strengthening program on medial elbow gapping in collegiate baseball pitchers.JSES reviews, reports, and techniques · 2025Article
- Article
- Association Between Physical Performance, Gait Variability, and Fall Risk in Community-Dwelling Older Adults: Predictive Validity of Step-Width Variability for Screening of Fall Risk.Life (Basel, Switzerland) · 2025Article
- Cross-sectional assessment of the Tinetti performance-oriented mobility tool for screening physical frailty syndrome in older adults.BMC geriatrics · 2025Article
- The relationship between age related changes in strength and fitness with body size, shape and composition.Scientific reports · 2025Article
- The Modified-30-Seconds-Chair-Stand-Test: A Practical and Reproducible Tool to Assess Muscle Strength in Acutely Ill Hospitalized Geriatric Patients.Journal of frailty, sarcopenia and falls · 2025Article
- Impact of a 10-Week Aqua Fitness Intervention on Physical Fitness and Psychosocial Measures in Inactive Healthy Adult Women.Healthcare (Basel, Switzerland) · 2025Article
- Relationship between handgrip strength and timed up-and-go test on hospitalization costs in older adults: a population-based study.BMC public health · 2025Article
- Validity of self-reported measures of decreased muscle strength in older adults.Revista brasileira de enfermagem · 2025Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundAmong older adults, decreased handgrip strength is associated with greater risk of frailty, and loss of physical function, mobility, lean mass, and overall muscular strength and power. Frailty is also associated with sarcopenia, for which handgrip strength measurement has been recommended for diagnostic purposes. Specific cutoff points for diagnosis have been identified, but use of different devices may affect measurement. Therefore to assess validity and reliability, we compared the two most frequently used devices, the Jamar hydraulic and Smedley spring handgrip dynamometers.
methodsSixty-seven older (76.2 ± 0.9 years) men (n = 34) and women (n = 33) completed two trials of handgrip strength measurement on sequential days (T1, T2) using both devices in random order. Intraclass correlations were used to assess test-retest reliability, and Bland-Altman analysis was used to assess validity as the level of agreement between devices.
resultsThere were significant (p < 0.001) relationships between devices at T1 (r = 0.94) and T2 (r = 0.94) and strong (p < 0.001) intraclass correlations were observed for both devices (Jamar = 0.98; Smedley = 0.96), indicating excellent reliability. However, there were significant differences between devices. Strength measured with Jamar was greater than Smedley at both T1 (27.4 ± 1.4 vs. 23.4 ± 1.1 kg, p < 0.001) and T2 (25.3 ± 1.4 vs. 21.8 ± 1.2 kg, p < 0.001). Bland-Altman analysis confirmed these differences. Subgroup analysis to evaluate the effect of gender and age indicated that in women and old-old (>75 years) participants, differences between devices were closer to zero for both measurements compared to men and young-old (65-75 years) participants.
conclusionsOur results demonstrate that despite excellent reliability, there is poor agreement between devices, indicating a lack of validity. For use as a diagnostic tool, standardization and device-specific cutoff points for handgrip dynamometry are needed.
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