Alterations in minute ventilation, maximum voluntary ventilation and dyspneic index in different trimesters of pregnancy.

Respiratory function in pregnancy is of special importance since the life of fetus depends primarily upon its oxygen supply. Thus this study was designed to evaluate the Minute ventilation (MV), Maximum Voluntary Ventilation (MVV) & Dyspneic Index (DI) in different trimesters of pregnancy & compare the results with nonpregnant control group. A cross-sectional study was carried out in 200 healthy women in the age range of 19-35 years with 50 subjects each in 1st, 2nd, 3rd trimesters of pregnancy and non-pregnant control group. We recorded respiratory parameters in study and control groups. Statistical analysis was done by ANOVA and Tukey Krammer post Hoc tests. It was observed that there was a significant decrease in MVV and dyspneic index in all trimesters of pregnancy and an insignificant variation in MV when compared to the control group. The changes in pulmonary function are influenced by the mechanical pressure of enlarging gravid uterus, elevating the diaphragm and restricting the movements of lungs thus hampering forceful expiration. The decrease seen in MVV in 1st trimester might be due to bronchoconstriction effect of decreased alveolar Pco2 on the bronchial smooth muscles.

Effect of Yoga on Short Term Heart Rate Variability Measure as a Stress Index in Subjunior Cyclists : A Pilot Study。

Subjunior athletes experience mental stress due to pressure from the coach, teachers and parents for better performance. Stress, if remains for longer period and not managed appropriately can leads to negative physical, mental and cognitive impact on children. The present study was aimed to evaluate the effect of integrated yoga module on heart rate variability (HRV) measure as a stress index in subjunior cyclists. Fast furrier transform technique of frequency domain method was used for the analysis of HRV. We have found a significant increase in high frequency (HF) component by 14.64% (P<0.05) and decrease in the low frequency component (LF) of HRV spectrum by 5.52% (P<0.05) and a decrease in LF/ HF ratio by 19.63% (P<0.01) in yoga group. In the control group, there was decrease in the HF component and, no significant difference in the LF component of HRV spectrum and LF/HF ratio. The results show that yoga practice decreases sympathetic activity and causes a shift in the autonomic balance towards parasympathetic dominance indicating a reduction in stress. In conclusion, yoga practice helps to reduce stress by optimizing the autonomic functions. So, it is suggested to incorporate yoga module as a regular feature to keep subjunior athletes both mentally and physically fit.

Role of exercise and nutrition on cardiopulmonary fitness and pulmonary functions on residential and non-residential school children.

Physical fitness is the prime criterion for survival and to lead a healthy life. Our aim is to find out effect of exercise and nutrition on physical fitness on growing children with scientific records. The present study was designed on healthy school children of a Residential-Sainik (100) and Non-Residential (100) school children (12-16 yrs) of Bijapur. To evaluate cardiopulmonary fitness parameters included are VO2 Max (ml/kg/min) and Physical Fitness Index (PFI %). Harvard Step Test determined VO2 Max and PFI. Also recorded pulmonary function parameters like Forced Expiratory Volume in 1 sec (FEV1 in %) by recording spirometry. Peak Expiratory Flow Rate (PEFR in L/Min) by Peak flow meter and Maximal Expiratory Pressure (MEP in mmHg) by modified Black’s apparatus. We found statistically significant higher values (p=0.000) of VO2 Max, PFI, FEV1, PEFR and MEP in residential school children compared to nonresidential school children higher. So, our study shows that regular exercise and nutritious food increase the cardiopulmonary fitness values and pulmonary functions in Residential school children.

Role of Exercise and Nutrition on Cardiopulmonary Fitness.

Physical fitness is the prime criterion for survival, to achieve any goal and to lead a healthy life. Effect of exercise to have a good physical fitness is well known since ancient Vedas. Our aim is to find out the effect of exercise and nutrition on growing children with scientific records. So, we have selected Residential and Non-residential school children with age between 12 and 16 years. Obviously, Residential school children will get recommended nutritious food and they are undergoing regular physical exercise training. Subjects were divided into two groups. Group I is residential and group II is non-residential, each of having 100 students and they were subjected for cardiopulmonary fitness tests. Physical fitness can be assessed by suitable cardiopulmonary fitness parameters like Physical Fitness Index (PFI in %) and maximal oxygen consumption that is VO2max (ml/kg/min) by using Harvard step test. Results were compared and subjected to statistical analysis for Z test. VO2 max (Mean ± SD) in residential was 66.03 ± 7.06 and in non-residential school children was 55.24 ± 7.53. PFI (Mean ± SD) in residential was 54.96 ± 8.38 and in non-residential school children was 44.75 ± 5.05. So, VO2 max (p=0.000) and PFI (p=0.000) were significantly higher in residential as compared to that of non-residential school children. So, from above data analysis it is observed that regular exercise and nutritious food increase the cardiopulmonary fitness values in residential school children.

Role of alpha-tocopherol in cardiopulmonary fitness in endurance athletes, cyclists.

Exercise increases oxygen consumption and causes a disturbance of intracellular pro-oxidant-antioxidant homeostasis. Athletes are exposed to acute and chronic stress that may lead to increased generation of oxidative species. Hence oxidative stress increases in athletes. Administration of antioxidant like alpha-tocopherol as supplementation may reduce the cell damage caused due to oxidative stress. In the present study, our aim was to study the effects of alpha-tocopherol supplementation on the cardiopulmonarv fitness in endurance athletes (cyclists) and non-athletes. Our study included 40 cyclists who were trained under District Youth Service & Sports Office. 40 controls were randomly selected from student group of B.L.D.E.A’s Medical College. Aloha-tocooherol (Vitamin E) 200 mg/ day for 21 days was given to study group and placebo was given to placebo group. Various physiological parameters like heart rate, blood pressure, respiratory rate were recorded, for assessing cardiopulmonarv fitness: Physical Fitness Index (PFI) and VO2 max ml/min/kg were recorded before and after supplementation of vitamin E in athletes, and were compared with placebo group before and after supplementation of placebo and also with non-athletes. The results obtained from present study indicate that antioxidant like alpha-tocopherol supplementation did not contribute significantly to improve the cardiopulmonarv fitness of endurance athletes.