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Áª«µ­˜¦r¢gœ¢¼­µ¦ 2550; 17(3): 86 - 90 J Thai Rehabil Med 2007; 17(3): 86 - 90

Correspondence to: Pa ntas ak Tansakul, Sirindhorn National Medical Rehabilitation Center, 88126 Tivanon Rd. Nontaburi, 11000.

E-mail: pantasak@health2.moph.go.th

ABSTRACT

Grip strength in normal population and rheumatoid arthritis patients:

comparison of sphygmomanometer and hydraulic dynamometer

Tansakul P, Panuwannakorn M.

Department of Rehabilitation Medicine.

Faculty of Medicine, Ramathibodi Hospital

Objectives: To study the correlation of grip strength measured by sphygmo- manometer and hydraulic dynamo- meter in normal population and rheumatoid arthritis patients

Study Design: Cross-sectional analytic study

Setting: Ramathibodi Hospital Subjects: 109 normal populations without dominant hand problem and 48 rheumatoid arthritis patients Methods: Measure grip strength of dominant hand in normal population and rheumatoid arthritis patients using hydraulic dynamometer and Sphyg- momanometer 3 times for each then calculate for mean.

Results:Mean grip strength of normal population measured by hydraulic dynamometer and sphygmomano- meter were 29.89 + 7.95 Kg and

226.88 + 41.52 mmHg respectively and mean grip strength of rheumatoid arthritis patients were 19.44 + 6.01 Kg and 158.40 + 41.74 mmHg respectively. The correlation (R²) of grip strength measured by sphygmo- manometer and hydraulic dynamo- meter was 0.70 and 0.67 in normal population and rheumatoid arthritis patients respectively.

Conclusion: Correlation of grip strength measured by sphygmo- manometer and hydraulic dynamo- meter in both normal population and rheumatoid arthritis patients were high.

Key words: grip strength, normal population, rheumatoid arthritis, hydraulic dynamometer, sphygmo- manometer

J Thai Rehabil Med 2007; 17(3): 86 - 90

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Á°„­µ¦°oµŠ°·Š

1. Dunn W. Grip strength of children aged 3 to 7 years using a modified sphygmo- manometer: comparison of typical children and children with rheumatic disorders. Am J Occup Ther 1993;

47(5): 421-8.

2. Mathiowetz V, Weber K, Volland G, Kashman N. Reliability and validity of grip and pinch strength evaluations. J Hand Surg [Am] 1984; 9(2): 222-6.

3. Fraser A, Vallow J, Preston A, Cooper RG. Predicting ‘normal’ grip strength for rheumatoid arthritis patients. Rheuma- tology (Oxford) 1999; 38(6): 521-8.

4. Massy-Westropp N, Rankin W, Ahern M, Krishnan J, Hearn TC. Measuring grip strength in normal adults: reference ranges and a comparison of electronic and hydraulic instruments. J Hand Surg [Am] 2004; 29(3): 514-9.

5. Wagman R, Fess E. Clinical assessment recommendations. 2 ed. Chicago:

American Society of Hand Therapy;

1992.

6. Ashton LA, Myers S. Serial grip strength testing- its role in assessment of wrist and hand disability. The Internet Journal of Surgery 2004; 5(2): 1-10.

7. Gutierrez Z, Shechtman O. Effective- ness of the five-handle position grip strength test in detecting sincerity of effort in men and women. Am J Phys Med Rehabil 2003; 82(11): 847-55.

8. Westbrook AP, Tredgett MW, Davis TR, Oni JA. The rapid exchange grip strength test and the detection of submaximal grip effort. J Hand Surg [Am] 2002; 27(2): 329-33.

9. Hamilton GF. Measurement of Grip strength: Validity and reliability of the sphygmomanometer and jamar grip dynamometer. JOSPT 1992; 16(5): 215- 9.

10. Hillman TE, Nunes QM, Hornby ST, Stanga Z, Neal KR, Rowlands BJ, et al.

A practical posture for hand grip dynamometry in the clinical setting. Clin Nutr 2005; 24(2): 224-8.

11. Boadella JM, Kuijer PP, Sluiter JK, Frings-Dresen MH. Effect of self- selected handgrip position on maximal handgrip strength. Arch Phys Med Rehabil 2005; 86(2): 328-31.

12. Smith RO, Benge MW. Pinch and grasp strength: standardization of terminology and protocol. Am J Occup Ther 1985;

39(8): 531-5.