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NJBMS - Volume 4, Issue 2, October - December 2013

Pages: 123-127
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HDL AND PHYSICAL FITNESS – DO THEY GO HAND IN HAND?

EVALUATION OF LIPID LEVELS AND PHYSICAL FITNESS IN EUTHYROID AND HYPOTHYROID STATES

Author: ASHOK V, SUMATHI S, ASMATHULLA S, DIVYA R, CHANDRA S

Category: Physiology

Abstract:

Background and objectives: Thyroid hormones influence all aspects of lipid metabolism including synthesis, mobilization, and degradation. Non-exercise test models for estimating the cardiorespiratory fitness could be used as a simple, reliable and cost effective method of estimating physical fitness in healthcare settings. The present study was performed to evaluate the effect of hypothyroidism on lipid levels and physical fitness and to find the correlation between physical fitness and HDL levels.

Materials and Methods: This was a hospital based case control study which included 50 healthy euthyroid subjects of 30-60 years of age and 36 hypothyroid subjects of 30-60 years of age. Physical activity was assessed by validated international physical activity questionnaire (IPAQ). Estimation of VO2 Max (cardiorespiratory fitness) was done using the Non exercise regression model developed by Jackson.

Results: In the hypothyroid group, physical fitness is negatively correlated with TC and LDL and physical activity is found to be negatively correlated with TC, TGL, LDL and VLDL. In the control group, physical activity and physical fitness shows a negative correlation with TC and LDL levels.

Conclusion Our results suggest that physical fitness is found to be more related to total cholesterol and LDL levels rather than HDL levels in both the cases and the control group.

Keywords: HDL, Physical fitness, VO2max, IPAQ, cardio respiratory fitness.