Jamar Dynamometer and Adapted Sphygmomanometer for Measuring Grip Strength in Patients with Rheumatoid Arthritis

Agnew, Patricia J.; Maas, Frikkie

doi:10.1177/153944929101100501

Cited by 22 publications

(21 citation statements)

References 25 publications

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“…The strength of the relations between the instrument scores was in accordance with the results of the study by Agnew and Maas [28]. The lower correlations (r = 0.60) reported by Fike and Rousseau [35] may be related to their use of a different measurement instrument (Martin Vigorimeter) which necessitates spherical grasping during squeezing the ball.…”

Section: Discussionsupporting

confidence: 87%

“…The consistency of the scores among each trial was higher compared to that found by Agnew and Maas [28]. The presence of a training period and application of the standard test procedures might have improved the consistency of the trials.…”

Section: Discussionmentioning

confidence: 52%

“…This table facilitates the conversion of the scores between the instruments. A table format similar to the one in the study by Agnew and Maas [28] was used to facilitate the comparison of the results of these two studies.…”

Section: Resultsmentioning

confidence: 99%

“…Although Agnew and Maas [28] reported equations for the conversion of the scores between Jamar dynamometer and an SphM, they used a smaller sized bag and lower starting pressure level. Probably, these differences are largely responsible for the variations in the corresponding instrument scores between their [28] study and ours. Clinicians can use the conversion table developed in this study to estimate the corresponding scores of Jamar dynamometer and an SphM having a bag with a circumference of 20.3 cm.…”

Section: Discussionmentioning

confidence: 99%

“…There were some attempts to analyze the relationship between the scores of Jamar dynamometer and an SphM in healthy subjects [24,27] and patients with RA [28]. However, bag dimensions and starting pressure levels in these studies were smaller than those suggested by Melvin for adults [23].…”

Section: Introductionmentioning

confidence: 99%

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Conversion of grip strength scores between Jamar dynamometer and a modified sphygmomanometer in patients with rheumatoid arthritis

Uğurlu

Özdoğan

2013

IES

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BACKGROUND: Jamar dynamometer and modified sphygmomanometer (SphM) are used to evaluate grip strength (GS) in patients with rheumatoid arthritis (RA). However, their scores are not interchangeable. OBJECTIVES: The aim of this study was to describe the intertrial reliability of grip strength measures obtained with Jamar dynamometer and an SphM, and delineate the relationship of the measures obtained with these two instruments when they were used in patients with RA. METHODS: Patients were eligible volunteers among 74 consecutive patients with definite diagnosis of RA. The data from 61 patients were analyzed. Student's t test was used to compare GS means of the male and female patients. Intertrial reliability was examined using one-way repeated measures ANOVA and intraclass correlation coefficients. The relationship between the measures was established using Pearson correlation coefficients and inverse regression analysis. The latter allowed the generation of conversion tables. RESULTS: GS means were not significantly different between the genders. Both instruments demonstrated excellent intertrial reliabilities. No significant difference was observed among the trials with each instrument. There was a strong relationship between the instruments' scores. This relationship was proven to be linear. Conversion equations were calculated based on the instruments' scores. CONCLUSION: Clinicians now have a table to convert hand strength scores between Jamar dynamometer and an SphM, and can determine the deviation from the normal in patients with RA.

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Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 52%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Conversion of grip strength scores between Jamar dynamometer and a modified sphygmomanometer in patients with rheumatoid arthritis

Uğurlu

Özdoğan

2013

IES

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Symptomatic effects of chondroitin 4 and chondroitin 6 sulfate on hand osteoarthritis: A randomized, double‐blind, placebo‐controlled clinical trial at a single center

Gabay¹,

Medinger-Sadowski²,

Gascon³

et al. 2011

Arthritis & Rheumatism

104

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Objective. To evaluate the symptomatic effects of highly purified chondroitin 4 and chondroitin 6 sulfate (CS) therapy in patients with osteoarthritis (OA) of the hand.Methods. This investigator-initiated, singlecenter, randomized, double-blind, placebo-controlled clinical trial included 162 symptomatic patients with radiographic evidence of hand OA (American College of Rheumatology criteria). Inclusion criteria included patient's assessment of global spontaneous hand pain of at least 40 mm on a 0-100-mm visual analog scale (VAS) and functional impairment of at least 6 (0-30 scale) on the Functional Index for Hand OA (FIHOA) in the most symptomatic hand. Patients received either 800 mg of CS (n ‫؍‬ 80 patients) or placebo (n ‫؍‬ 82 patients) once daily for 6 months and were analyzed in an intent-totreat approach. The two primary outcomes were the change in the patient's assessment of global spontaneous hand pain and in hand function (by FIHOA score) from baseline to month 6. Secondary outcomes were improvement in grip strength, duration of morning stiffness, acetaminophen consumption, and the investigator's global impression of treatment efficacy.Results. There was a significantly more pronounced decrease in the patient's global assessment of hand pain in the CS group than in the placebo group (difference VAS scores ؊8.7 mm; P ‫؍‬ 0.016). Hand function improved significantly more in the CS group than in the placebo group (difference in FIHOA scores ؊2.14; P ‫؍‬ 0.008). There was a statistically significant between-group difference in favor of CS for the duration of morning stiffness and for the investigator's global impression of treatment efficacy. Changes in grip strength, acetaminophen consumption, and safety end points were not significantly different between the two groups.Conclusion. This study demonstrates that CS improves hand pain and function in patients with symptomatic OA of the hand and shows a good safety profile.Osteoarthritis (OA) is a degenerative disorder that primarily affects the articular cartilage and causes painful disease flares and disability in activities of daily living. In developed countries, OA is the most common form of arthritis, resulting in a significant impact on medical expenses, both in terms of direct and indirect medical costs (1). Hand OA is present in ϳ20-30% of adults (2,3), with age-related increases, reaching a prevalence of Ͼ50% after the age of 60 years (4,5). The most frequently affected joints are the distal interphalangeal (DIP), proximal interphalangeal (PIP), thumb interphalangeal, and trapeziometacarpal joints (6).Despite its high prevalence and its impact on quality of life (7), the therapeutic options in hand OA are still limited. Clinical trials examining the efficacy of therapeutic approaches to hand OA specifically are scarce (8-10). Thus, management of hand OA has been ClinicalTrial.gov identifier: NCT00291499.

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Randomized controlled trial on low level laser therapy (LLLT) in the treatment of osteoarthritis (OA) of the hand

et al. 2005

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Jamar Dynamometer and Adapted Sphygmomanometer for Measuring Grip Strength in Patients with Rheumatoid Arthritis

Cited by 22 publications

References 25 publications

Conversion of grip strength scores between Jamar dynamometer and a modified sphygmomanometer in patients with rheumatoid arthritis

Conversion of grip strength scores between Jamar dynamometer and a modified sphygmomanometer in patients with rheumatoid arthritis

Symptomatic effects of chondroitin 4 and chondroitin 6 sulfate on hand osteoarthritis: A randomized, double‐blind, placebo‐controlled clinical trial at a single center

Randomized controlled trial on low level laser therapy (LLLT) in the treatment of osteoarthritis (OA) of the hand

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