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Natl J Integr Res Med. 2013; 4(6): 116-121


A Comrarative Study On Effect Of Exercise Intensity On Cardiovascular Variables During Concentric And eccentric Resistive Knee Extention Exercise On Healthy Male

Dr. Ankur Khant*,Dr. Maulik Shah**.

Abstract
Background and Objectives: Resistance training in the form of concentric and eccentric exercise is a highly recommended form of exercise for athletes and an individual with or at risk of cardiovascular diseases. So the purpose of this study was to compare the effect of exercise intensity on cardiovascular changes during concentric and eccentric resistive knee extension exercise on healthy males. Methods: A sample of 50 healthy subjects between the age group (18-25 years) were randomly selected and divided into 2 groups, A (concentric exercise) and B (Eccentric exercise). Each group exercised knee extension at 3 different intensities 75% of 1 RM, 85% of 1 RM, 1 RM). 5 minutes warm up was given and 5 minute rest was given after each exercise. SBP, DBP, HR, MAP and RPP were measured before and after each exercise. Results: Statistical analysis done with related t-test and unrelated t-test. Both the group improved but significantly more improvement was seen in concentric group when compared to eccentric group. Conclusion: The result of the study suggests that eccentric exercise produce lower cardiovascular response than concentric exercise. [Khant Ankur et al NJIRM 2013; 4(6) : 116-121]

Key words: Resistance exercise, concentric exercise, Eccentric exercise, cardiovascular parameter, Exercise intensity.



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