Comrarative Study On Effect Of Exercise Intensity On Cardiovascular Variables During Concentric And eccentric Resistive Knee Extention Exercise On Healthy Male
A Comrarative Study of effect of Exercise Intensity On Cardiovascular Variables
DOI:
https://doi.org/10.70284/njirm.v4i6.2263Keywords:
Resistance exercise, concentric exercise, Eccentric exercise, cardiovascular parameter, Exercise intensityAbstract
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
References
2. Sasran MR. Manual of sports medicine - chapter 8: building strength. 1st edition pages: 77-83.
3. Wilborn C et al. The effect of exerciseintensity and body position on cardiovascular variables duringresistanceexercise. journal of exercisephysiology on line, vol-7, no.4, Aug.2004.
4. Pollok ML et al. Resistance exercise in individual with and without cardiovascular disease. Circulation 2000; 101:828.
5. McArdle WD, Katch FI and katch VL. Exercise physiology. 5th edition, lippincottwilliams and wilkins. Pages: 305-324
6. Wilmore JH and Costill DL. Physiology of sports and exercise. 2nd edition, human kinetics, Pages: 222-235
7. Okamoto T, Masuhara M and Ikuta K Cardiovascular responses induced during high intensity eccentric and concentric isokinetic muscle contraction in healthy young adults. clinPhysiolFunet imaging (2006)26, pp 39-44.
8. McDougall et al. Arterial blood pressure response to heavy resistance training. J applphysio. 1985, 58(3):785-790
9. Thompson E et al. Cardiovascular responses to submaximal concentric and eccentric exercise in older adults. Journal of aging and physical activity 7(1):20-31 Jan 1999.
10. Overend TJ et al. Cardiovascular stress associated with concentric and eccentric isokinetic exercise in young and older adults. J gerntol A BiolSci Med Sci, 2000, Apr; 55(4): B 177-82.
11. Hagermana FC et al. Effects of high intensity resistance training on untrained older men. I. strength, cardiovascular and metabolic responses. The journals of gerontology series
A: Biological Sciences and medical sciences 55:B336 - B346 (2000).
12. Fiatarone MA et al. High intensity strength training in nonagenarians. Effects on skeletal muscle. J Am med assoc (1990); 263: 3029-3034
13. Willoughby DS, Vanenk C and Taylor L Effects of concentric and eccentric contractions on exercise induced muscle injury, inflammation and serum IL-6. Journal of exercise physiology Vol. 6, No.4, Nov.2003.
14. Lakatta EG Cardiovascular regulatory mechanism in advanced age. Physiol Rev (1993); 73:413-467.
15. Lastayo PC et al. Chronic eccentric exercise: improvements in musclestrength can occur with little demand for oxygen. Am J physicolregulintegrcomp physiol 276:R611-R615, 1999.
16. Komi PV et al. Force and EMG power spectrum during eccentric and concentric actions. Med sci sports exerc (2000); 32:1757-1762.
17. Linnamo et al. EMG power spectrum and maximal M-wave during eccentric and concentric action at difference force level. Actaphysiolpharmacolbulg (2001); 26:32-36.
18. Madeleine P et al.Mechanomyography and electromyography force relation relationship during concentric, isometric and eccentric contractions. J ElectromyogrKinesiol 2001; 11:113-121
19. Buck JA et al. Systolic blood pressure responses during isometric contraction of large and small muscle group. Med sci sports exerc (1980); 12: 145-147.
20. Bigland-ritchie B and Woodw JJ Integrated electromyogram and oxygen uptake during positive and negative work. J physiol (1976); 260:267-277.
