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Citations
Method: The experimental subjects were divided into 3 groups (Group 1: 100 persons; control, Group 2: 100 persons; RA without hand deformity, Group 3: 100 persons; RA with hand deformity). They were assessed with using the Modified Barthel Index (MBI), evaluating the activity of daily living (ADL). A JAMAR Hand DynamometerⰒ, JAMAR Hydraulic Pinch GaugeⰒ (Sammons Preston Rolyan, Ilinois, USA) were used to measure grip and pinch strength. Further assessments included joint deformity counts, and visual analogue scales. Results: The grip and pinch strength significantly decreased in all groups. The total MBI with other groups significantly decreased in RA patients with hand deformity (group 3). The MBI correlated well with visual analogue scales in group 2 and with joint deformity counts in group 3. Conclusion: Hand grip and pinch strength tests would be a useful tool for the evaluation of hand function in rheumatoid arthritis patients. (J Korean Acad Rehab Med 2008; 32: 200-205)
Objective: To evaluate the components for vocational rehabilitation program including the strengths and job simulation, and to provide the data of the upper extremity strengths for a successful return to work.
Method: Sixty normal untrained subjects(male 30, female 30) were examined for the grip and pinch strengths using Jamar dynamometer and Preston pinch gauge, and the strengths of five simulated tasks using work simulation of Cybex 6000 Testing and Rehabilitation System(Cybex, Division of Lumex, inc., USA).
Results: The values during the tasks were significantly different in males compared to females(p＜0.01). Strengths of the right upper extremity by Jamar dynamometer, Preston pinch gauge, gripping device, T-handle(radial direction), and flutted knob(radial direction) were significantly different compared to the left(p＜0.01). Grip strengths between Jamar dynamometer and gripping device of Cybex were highly correlated(p＜0.01). All the measured values were significantly correlated with both weight and height(p＜0.01).
Conclusion: The results of this study can be used as a baseline data for the vocational rehabilitation in patients with a disability of upper extremity.
The purpose of this study was to estimate mean pressure thresholds over several skeletal muscles, grip and pinch strengths in female telephone operators.
Pressure thresholds on muscles of neck and shoulder were measured with a pressure algometer, and grip and pinch strength were measured with a Jamar dynamometer and a Jamar pinch gauge in 904 female telephone operators.
The pressure threshold was highest in the supraspinatus and lowest in the cervical paraspinals. There was no statistically significant difference between right and left corresponding muscles. The mean grip strength was 22.29 kg in the right hand, 21.97 kg in the left hand. The mean tip pinch strength was 0.56 kg in the right, 0.51 kg in the left. The mean lateral pinch strength was 2.21 kg in the right, 2.12 kg in the left. The mean palmar pinch strength was 1.82 kg in the right, 1.66 kg in the left.
There was no significant correlation between grip, pinch strength and age(p＞0.05). There were positive correlations between height, weight and grip strength. There were positive correlations between exposure duration to visual display terminal and pinch strength.
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