Effect of one-handed exercise on the strength of thecontalateral hand

Introduction

In the present research, it is tried to impress on remedy aspect of exercise in such a way that if one of the parts of body like hand or foot was injured and the patient has to keep it immovable for a long time, he can prevent from weakness of injured organ by this method. Purpose and significance of this study is cross transfer of strength from one hand to other hand and increasing of strength in the hand that it hasn’t done any exercise.

Method

For this study, have been selected 25 non-athlete university student males with average 21. 9 years old. First of all strength of triceps measured by dynamometer in both of hands(pre test) and then with Mc Queen Method (4 sets & 10RM) they trained just on stronger hand three days a week for five week, totally 15 sessions. For second time has been measured triceps strength in both of hands (post test). Difference between pre test and post test indicate that using of this method increases strength approximately 20% on the hand which hadn’t has any exercise; p<0.05.

Results

Our results indicate that one- handed exercise can improve the strength on trained hand and untrained hand too.
In fact, we can transfer the strength from left hand to right hand and vice versa.

Discussion / Conclusions

So if any person has broken or dislocated hands and foots or any fact which limits movement in upper and lower extremities for a long time, based on the results of this research and doing the proper program for non-injured organ, they can, not only prevent from atrophy on immovable (injured) hand or foot , but also can strengthen the other foot or hand too. Researcher assess effect of exercise only with one foot on power, endurance and strength of contra lateral foot and they observed symmetrically transfer on quadriceps and hamstring from trained foot to untrained foot [1].Japanese
researchers indicated that training with just one hand can increases blood flow and endurance on untrained hand[2]. This result is similar to reduction achieved via this research.

References

[1]. Kannus & Alosa & Cook & Johnson(1992) Eur- J- Appl.Physiol.
[2]. Yasuda & Miyamura (1983) Eur-J- Appl. Physiol.