THE EFFECT OF UNILATERAL RESISTANCE TRAINING AND DETRAINING ON NEURAL ADAPTATIONS OF CONTRALATERAL UNTRAINED LIMB

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DANESHMANDI HASAN; AFSHARNEZHAD T.; HOSSEINI S.A.

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Journal: OLYMPIC Year:2006 | Volume:14 | Issue:3 (SERIAL 35) Page(s): 47-60

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Title

THE EFFECT OF UNILATERAL RESISTANCE TRAINING AND DETRAINING ON NEURAL ADAPTATIONS OF CONTRALATERAL UNTRAINED LIMB

Author(s)

DANESHMANDI HASAN | AFSHARNEZHAD T. | HOSSEINI S.A. | Issue Writer Certificate

Keywords

UNILATERAL RESISTANCE TRAININGQ3

ELECTROMYOGRAPHYQ2

TRICEPS SURAE MUSCLESQ3

MVCQ3

Abstract

The purpose of this investigation was to study the effect of UNILATERAL RESISTANCE TRAINING and detraining on neural adaptations of contralateral limb. Twenty healthy males (age: 20.35±1.63 years, height: 173.15±3.47cm, weight: 72.6±5.53 kg) without any injuries history of knee and ankle joints, tendons and plantar flexor muscles participated in this study. The subjects were randomly assigned to a control (CTL: n=10) or a training (TRN: n=10) group. The TRN group performed isotonic strength weight training on non-dominant plantar flexor 3 times per week for 8 weeks. Integrated ELECTROMYOGRAPHY (IEMG) data from triceps surae muscle group consisting of the sole (SOL) and gastronomies (GAS) muscles (Agonist) and tibialis anterior (TA) muscle (Antagonist) and maximal voluntary contraction (MVC) of plantar flexor of both dominant (DOM) and non-dominant (NONDOM) leg were measured in pre test (PRE), post test (POST) and post-detraining (DE). One way ANOVA and repeated measure was used for statistical analysis in significant level of P £0.05.The result indicated a significant increase in triceps surae muscle group IEMG, plantar flexor MVC and a significant decrease in antagonist (TA) muscle IEMG over 8 weeks in both the trained and untrained limbs for the TRN group but no significant change in these factors in either limb for the CTL group. No significant changes occurred in MVC and IEMG in the contralateral limb after detraining, but significant decrease in trained limb for the TRN group. It can be concluded that unilateral strength training cause isometric strength increase on plantar flexor muscles and improvements in intramuscular and intramuscular neural adaptations not only in trained limb but also in cotralateral untrained limb. These results suggest that the mechanisms underlying cross education of muscular strength may be explained by central neural factors during training, but not solely so during detraining.

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APA: Copy

DANESHMANDI, HASAN, AFSHARNEZHAD, T., & HOSSEINI, S.A.. (2006). THE EFFECT OF UNILATERAL RESISTANCE TRAINING AND DETRAINING ON NEURAL ADAPTATIONS OF CONTRALATERAL UNTRAINED LIMB. OLYMPIC, 14(3 (SERIAL 35)), 47-60. SID. https://sid.ir/paper/37842/en

Vancouver: Copy

DANESHMANDI HASAN, AFSHARNEZHAD T., HOSSEINI S.A.. THE EFFECT OF UNILATERAL RESISTANCE TRAINING AND DETRAINING ON NEURAL ADAPTATIONS OF CONTRALATERAL UNTRAINED LIMB. OLYMPIC[Internet]. 2006;14(3 (SERIAL 35)):47-60. Available from: https://sid.ir/paper/37842/en

IEEE: Copy

HASAN DANESHMANDI, T. AFSHARNEZHAD, and S.A. HOSSEINI, “THE EFFECT OF UNILATERAL RESISTANCE TRAINING AND DETRAINING ON NEURAL ADAPTATIONS OF CONTRALATERAL UNTRAINED LIMB,” OLYMPIC, vol. 14, no. 3 (SERIAL 35), pp. 47–60, 2006, [Online]. Available: https://sid.ir/paper/37842/en

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