Changes in Ocular Perfusion Pressure in Response to Short Term Isometric Exercise in Young Adults
Klíčová slova:
Ocular perfusion pressure, Isometric exercise, GlaucomaAbstrakt
Summary: Ocular Perfusion Pressure (OPP) is the pressure difference between the Mean Arterial Pressure (MAP) and the Intra Ocular Pressure (IOP). Decreased OPP could be a major risk factor for glaucoma. The aim is to study the effect of Isometric exercise on OPP in apparently healthy young adults. Forty apparently healthy young adult volunteers comprising 20 males and 20 females in the age group of 18-21 years were selected among MBBS Phase I students of JSS Medical college, JSSU, Mysore. IOP and BP were recorded. Mean arterial pressure (MAP) and OPP were calculated. There was a statistically significant difference (p<0.05) in the mean OPP before and after performing Isometric exercise and between males (50.58±0.72 to 56.85±1.15 mm Hg) and females (49.35 ± 1.66 to 56.71 ± 1.61 mm Hg). Physical activity in the form of Isometric exercise improves ocular blood flow - OPP. Hence regular exercise of prescribed intensity may prove useful for glaucomatous patients which enhance their OPP.
Reference
Beck D, Harris A, Evans D and Martin B (2003). Ophthalmic arterial hemodynamics during Isometric Exercise. Journal of Glaucoma, 4:317-321.
Cristina L. M. (2009). Ocular perfusion pressure and glaucoma: clinical trial and epidemiologic findings. Current opinion in ophthalmology, 20:73-78.
Hayreh S.S. (2001). Blood flow in the optic nerve head and factors that may influence it. ProgRetin Eye Res. 20:595–624.
Hilton E (2003). Exerc-eyes: effects of exercise on ocular health. Clinical 15:45-48.
Khurana A.K (2007). Glaucoma. Comprehensive ophthalmology. 4th edition. India. New age international publishers; 208-210.
Kielar R A, Teaslinna D G (1975). Standardized aerobic and anaerobic exercise, Differential effects on intraocular tension, blood pH and Lactate. Investigative ophthalmology 14:782-785.
Martin E.C., Shaver J.A., Leon D.F. (1974). Autonomic mechanisms in Hemodynamic responses to isometric exercise. J Clin Invest, 54(1):104-115.
McArdle W.D., Katch F.I., Katch V.L. (2006). Essentials of Exercise Physiology, 3rd edition. Lippincott Williams publication. 472-473.
Richard J.S.F. and Drance S.M. (1967). The effect of 2 % epinephrine on aqueous dynamics in human eye. Can J. Ophthalmol. 2: 259-265.
Sears M.L. and Mead A (1983). A major pathway for the regulation of IOP. Int Ophthalmol Clin 6:201-209.
Yingfeng Zheng, Tien Y. Wong et. al (2010). Distribution of ocular perfusion pressure and its relationship with open-angle glaucoma; The Singapore Malay eye study; investigative ophthalmology and visual science, 51(7):3399-404
Yip JL, Broadway D.C. et.al (2011): physical activity and ocular perfusion pressure: The Epic-Norfolk eye study: inv. Ophthalm & visual sciences, 52(11):8186-92.
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Tato práce je licencována pod Mezinárodní licencí Creative Commons Attribution-NonCommercial-NoDerivatives 4.0.
