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To Study Seasonal Variation in Autonomic Parameters in Adult Males
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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
Diaphragm Thickness, Body Surface Area, MMIP, MMEP, Pulmonary Function Test
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- Vishnu Sharma M, Anupama N. Assessment of Diaphragm functions. Pulmon. 2011; 13 (3): 102- 107.
- Wait JL, PA Nahormek, WT Yost, DF Rochester. Diaphragmatic thickness-lung volume relationship in vivo. J. Appl. Physiol. 1989; 67:1560-8.
- Polkey MI, Green M, Moxham J. Measurements of respiratory muscle strength. Thorax 1995; 50:1131-5.
- Tahera H. Doctor, Sangeeta S. Trivedi, Rajesh K. Chudasama. Pulmonary function test in healthy school children of 8 to 14 years age in south Gujarat region, India. Lung India. 2010; 27: 145–148.
- Black LF, Hyatt RE. Maximal respiratory pressure: normal values and relationship to age and sex. Am Rev Respir Dis,1969; 99:696-702.
- S H Wilson, N T Cooke, R H Edwards, and S G Spiro. Predicted normal values for maximal respiratory pressures in caucasian adults and children. Thorax. 1984; 39: 535–8.
- J Ueki, P F De Bruin, N B Pride. In vivo assessment of diaphragm contraction by ultrasound in normal subjects. Thorax 1995;50:1157-61.
- Arora NS, Rochester DF. Effect of body weight and muscularity on human diaphragm muscle mass, thickness, and area. J Appl Physiol 1982; 52:64-70.
- F D McCool, J O Benditt, P Conomos, L Anderson, C B Sherman, and F G Hoppin, Jr “Variability of diaphragm structure among healthy individuals.” American Journal of Respiratory and Critical Care Medicine, 1997, 155:1323-8.
- Loring SH, Mead J, Griscom NT. Dependence of diaphragmatic length on lung volume and thoracoabdominal configuration. J Appl Physiol. 1985; 59(6) : 1961-70.
- Stephanie J Enright, Viswanath B Unnithan, Clare Heward, Louise Withnall, David H Davies. Effect of High-Intensity Inspiratory Muscle Training on Lung Volumes, Diaphragm Thickness, and Exercise Capacity in Subjects Who Are Healthy. Physical Therapy March 2006; 86: 345-54.
- R. Klusiewicz.Characteristics of the inspiratory muscle strength in the well-trained male and female athletes.Biol.sports, 2008; 25:13-22
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