Effect Of Handedness On Functional Organization Of Bimanual Isometric Handgrip

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Summary

The aim of this study was to examine force production during maximal isometric handgrip in unilateral (UL) and bilateral (BL) tasks in right- and left-handed subjects. Ten right-handed (RH) and 8 left-handed (LH) young men were studied. The subjects were instructed, after a command, to perform a shot-like handgrip, raising maximal force as fast as possible. Three series were performed as follows: 1) UL - right handgrip; 2) UL - left handgrip; 3) BL handgrip. We measured peak force, time to peak of force and rate of force. The BL/UL ratios for the right (R) and left (L) hand and L/R ratios for the UL and BL tasks were calculated. The L/R ratios for peak force and force rate in RH group ranged across all tasks and conditions from 0.71 to 0.75. They were significantly lower than 1 (p<0.01). These ratios did not differ significantly from 1 for LH subjects (0.98–1.02), indicating the handedness in RH group only. The BL/UL ratios for peak force were 0.89 and 0.89 in RH, suggesting symmetrical bilateral strength deficit. The magnitude of the bilateral deficit in LH group was larger for the dominant (L) hand compared to non dominant (R) hand – 0.93 and 0.97 (p<0.05) respectively, suggesting an asymmetry of bilateral deficit in LH. These ratios for time of force and rate of force indicated bilateral deficit (BD) in the dominant hand of RH group only.

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  • 1. Corey DM Hurley MM Foundas AL. Right and left handedness defined; A multivariate approach using hand preference and Hand performance measures. Neuropsychiatry Neuropsychol Behav Neurol. 2001;14(3):144-52.

  • 2. Bryden PJ Pryde KM Roy EA. A performance measure of the degree of hand preference. Brain Cogn. 2000;44(3):402-14.

  • 3. Petersen P Petrick M Connor H Conklin D. Grip strength and hand dominance: challenging the 10% rule. Am J Occup Ther. 1989;43(7):444-7.

  • 4. Clerke A Clerke J. A literature review of the effect of handedness on isometric grip strength differences of the left and right hands. Am J Occ Ther. 2001;55(2):206-11.

  • 5. Bohannon RW. Grip strength: a summary of studies comparing dominant and nondominant limb measuremnts. Percept Motor Skill. 2003;96(3 Pt1):728-30.

  • 6. Oppewal A Hilgenkamp TI van Wijck R Evenhuis HM. The effect of handedness on grip strength in older adults with intellectual disabilities. Res Devel Disab. 2013;34(5):1623-9.

  • 7. Ertem K Inan M Yologlu S Elmali N Harma A Sahin S Bora A. Effects of dominance body mass index and age on grip and pinch strength. Isokinet Exerc Sci. 2003;11(4):219-23.

  • 8. Koley S Singh AP. Effect of hand dominance in grip strength in collegiate population of Amritsar Punjab India. Anthropologist. 2010;12(1):13-16.

  • 9. Ohtsuki T. Decrease in grip strength induced by simultaneous bilateral exertion with reference to finger strength. Ergonomics. 1981;24(1):37-48.

  • 10. Oda S Moritani T. Maximal isometric force and neural activity during bilateral and unilateral elbow flexion in humans. Eur J Appl Physiol Occup Physiol. 1994;69(3):240-3.

  • 11. Kuruganti U and Seaman K. The bilateral leg strength deficit is present in old young and adolescent females during isokinetic knee extension and flexion. Eur J Appl Physiol. 2006; 97:322-26.

  • 12. Samozino P Rejc E di Prampero PE Belli A Morin JB. Force-Velocity Properties' Contribution to Bilateral Deficit during Ballistic Push-off. Med Sci Sports Exerc. 2014;46(1):107-14.

  • 13. Oda S Moritani T. Movement-related cortical potentials during handgrip contractions with special reference to force and electromyogram bilateral deficit. Eur J Appl Physiol Occup Physiol. 1995;72(1-2):1-5.

  • 14. Annett M. A classification of hand preference by association analysis. Br J Physiol. 1970;61(3):545-58.

  • 15. Kamarul T Ahmad TS. Hand grip strength in the adult Malaysan population. J Orth Surg. 2006;14(2):172-7.

  • 16. Van Dieёn JH Ogita FG De Haan A. Reduced neural drive in bilateral exertions: a performance-limiting factor? Med Sci Sports Exerc. 2003;35(1):111-8.

  • 17. Cornwell A Khodiguian N Yoo EJ. Relevance of hand dominance to the bilateral deficit phenomenon. Eur J Appl Physiol. 2012;112:4163-72.

  • 18. Gatev P Gavrilenko T Kolev N. Effects of maturity and training on bimanual ballistic isometrik handgrip. Acta Physol & Pharm Bul. 2001;26(1/2):97-101.

  • 19. Post M. van Diunen H Steens A Renken R Kuipers B Maurits B Zijdewind I. Redused cortical activity during maximal bilateral contractions of the index finger. Neuroimage 2007;35(1):16-27.

  • 20. Yahagi S Kasai T. Motor evoked potentials induced by motor imagery reve a functional asymmetry of cortical motor control in left and right handed human subjects. Neurosci Lett. 1999;276(3):185-8.

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