To Study Seasonal Variation in Autonomic Parameters in Adult Males
Subscribe/Renew Journal
The present study was conducted to assess the seasonal changes in autonomic parameters. The study was conducted in 55 healthy male medical students of first professional M.B.B.S. and employees of 18 to 50 years age group at G.S.V.M. Medical College, Kanpur. The change in mean weight, mean height, body mass index(BMI), and Waist to Hip ratio of the subjects were found stastistically insignificant(p>0.05). Waist circumference in Dec-Jan was 81.3±7.9 cm and in May-June was 80.6±8.0 cm. This decrease in waist circumference was significant (p<0.05). Autonomic parameters like difference of SBP (in standing test), 30:15 R-R Ratio (ratio of longest R-R interval around 30th beat and smallest R-R interval around 15th beat) (in Lying to standing test), E:I Ratio (in Deep breathing test), Valsalva Ratio, difference of DBP (in Hand grip test), and difference of SBP&difference of DBP (in Cold pressor test) were found insignificant (p>0.05).
Thus, it is concluded that in healthy men autonomic parameters do not vary with season whereas waist circumference vary with season, with higher level in the winter (Dec-Jan) and lower in summer (May-Jun).
Keywords
- Kevin Fitzgerald, Robert F. Wilson, and Paul A. Iaizzo. Autonomic Nervous System. Handbook of Cardiac Anatomy, Physiology, and Devices: 2009; part3, 177-189, DOI: 10.1OO7/978-1-60327- 372-5_12.
- Deepak KK, Godbole SA, Kochhar KP. Autonomic dysfunction and peripheral vasodilatory response in diabetes. Indian J Physio. Pharmacol: 1996; 40,325-329.
- Hata T, Ogihara T, Maruyama A, Mikami H, Nakamaru M, Naka T, Kumahara Y, Nugent CA. Seasonal variation of blood pressure in normotensive females aged 18 to 40 years in an Urban Slum of Delhi, India. Clinical and Experimental Hypertension:1982;vol.a4, no.3,341-354
- Radke KJ, Izzo JL. Seasonal variation in haemodynamics and blood pressure-regulating hormones. Journal of Human Hypertension: 2010; 24,410-416.
- Kristal-Boneh E, Gil Harari, Manfred S Green, Joseph Ribak. Seasonal changes in ambulatory blood pressure in employees under different indoor temperatures. Ocupational and environmental medicine: 1995; 52:715-721.
- Gideon Charach, Pavel D. Rabinovich, Moshe Weintraub. Seasonal changes in blood pressure and frequency related complications in elderly Israeli patients with essential hypertension. Gerontology: 2004; 50,315-321.
- Makinen TM, Mantyaari M, Paakkonen T, Jokelainen J, Palinkas LA, Hassi J, Leppaluoto J, Tahvanainen K, Rintamaki H. Autonomic nervous function during whole-body cold exposure before and after cold acclimation. Aviation, Space, and Environmental Medicine: 2008; 79(9), 875-882.
- Prasad GVR, Nash, Michelle M, Zaltman, Jefferey S. Seasonal variation in outpatient blood pressure in stable renal transplant recipients. Transplantation: 2001; vol.72, issue 11, 1792-1794.
- Law BM. Blood pressure spikes in winter. American Diabetes Association: 2008; vol.5, no.1, 1-6.
- Visscher TLS and Seidell JC. Time trends (1993– 1997) and seasonal variation in body mass index and waist circumference in the Netherlands. International Journal of Obesity: 2004; 28, 1309–1316.
- Uitenbroek DG. Seasonal variation in leisure time physical activity. Med Sci Sports Exerc: 1993; 25: 755–760.
Abstract Views: 345
PDF Views: 0