pulp pinch strengths were 6 and 5 higher for the dominant hand respectively

Pulp pinch strengths were 6 and 5 higher for the

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pulp pinch strengths were 6% and 5% higher for the dominant hand respectively. There are controversies regarding the differences in hand grip strength values between the dominant and nondominant hands in left and right handed people. So this study was designed to evaluate the grip and pinch strength differences between sides for right and left handed population. METHODS Subjects The study included 149 volunteers (81 male, 68 female) aged 24-60 years (mean 30.21 ± 5.91 years). Participants were recruited from the residents and fellows of different departments at Ankara Research and Education Hospital. Criteria for inclusion were that there was no restriction of movement in the upper limbs and no history of inflammatory joint disease, neurological disorder or injury to the upper extremity by self report. Dominant hand was defined as the one preferred for daily activities like writing and eating and for handling heavy objects. Hundred and twenty-eight participants were right hand dominant and 21 were left hand dominant. No participants reported ambidexterity. Instrumentation and Procedures All measurements were obtained by two observers at the same time of the day (between 10:00 and 12:00 am). Grip strengths were measured using a standard adjustable handle Jamar dynamometer at standing position with shoulder adducted and neutrally rotated and elbow in
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Singapore Med J 2002 Vol 43(5) : 235 full extension. Results were recorded as kilograms (Fig. 1). For standardisation, the dynamometer was set at the second or third handle position of which the participant claims to be more suitable (6) . For most of the participants second position which was considered to be the best level for grip evaluation and adopted by the American Society of Hand Therapists for routine testing has been used (7) . Pulp pinch strength were measured between the first and second digits. Pinch strength measurements were performed with the subject seated by using manual pinchmeter which measures finger prehension force (Fig. 2). All measurements were performed for both dominant and nondominant hands. Subjects performed three maximum attempts for each measurement and the average value of these trials was recorded. One-minute rests were given between each attempt and hands were alternated to minimise fatigue affects. No verbal encouragements were performed. The calibration of both instruments was tested periodically during the study. Statistical analysis The SPSS 8.0 for Windows package program was used for statistical analysis. The data were analysed using Mann- Whitney U test and student’s t test. p values equal to or less than 0.05 were accepted as significant (p < 0.05). RESULTS Our study group consisted of 21 left and 128 right hand dominant total 149 participants. The minimum, maximum and mean values for grip and pulp pinch strength of these participants are shown in Table I.
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  • Fall '18
  • Test, Left-handedness, Right-handedness, Hand Dominance

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