Evaluation of recovery of oxygen saturation and rate of perceived exertion in different body positions after submaximal exercise test in normal healthy individual

Background: Oxygen saturation is the fraction of oxygen saturated hemoglobin relative to total hemoglobin in blood. Normal oxygen saturation level in humans are 95-100 percent. Breathlessness is an unpleasant sensation of rapid or difficult breathing. The reason behind the subject experiencing breathlessness is that the body demands more oxygen than it supplies. Thus this study is conducted to Evaluate Recovery of Oxygen saturation and Rate of perceived exertion in different body positions after submaximal exercise testing in normal healthy individuals. Methodology: It was Pre and Post Study Design with 6 months duration including 40 healthy students recruited by purposive sampling method. The outcome measure was Recovery of Oxygen saturation and rate of perceived exertion. Result – Using the Paired t test, this shows that fastest recovery of oxygen saturation occurs in prone position that is within 1 min (99±0.96) than supine within 3 min (99±0) than upright sitting within 3 min (99±0) and fastest recovery of rate of perceived exertion occurs in prone position that is within 1 min (0.825±0.99) than supine within 3 min (0±0) than upright sitting within 3 min (0±0). Conclusion - From the present study we evaluate the Recovery of oxygen saturation and RPE in supine, prone, upright sitting position and we found that the fastest recovery of oxygen saturation and Rate of perceived exertion occurs in prone position than supine and upright sitting position after submaximal exercise testing in normal healthy individual.

Comparison of VO2max Prediction of Submaximal Exercise Testing for Six Minute Arm Ergometer Test with Six Minute Walking Test in Untrained Healthy Young Adult Males

Background: Six-minute walking test (6-MWT) is one of the submaximal exercise testing that is commonly used. The 6-MWT has limited use in the condition of individuals with limited limbs. Therefore, a six-minute arm ergometer test (6-MAT) submaximal exercise testing was developed. The presence of 6-MAT for assessing VO2max prediction is still relatively small.Aim: To compare the predicted VO2max of 6-MWT and 6-MAT, and to see if there are differences in each predicted VO2max value.Material and Methods: This was a cross-sectional study with a consecutive sampling, involving 31 untrained healthy young adult males, aged 26-40 years old. Each subject underwent two exercise testing 6-MWT and 6-MAT, which were carried out on different days with a minimum washout period of 24 hours. VO2max prediction value was evaluated for each exercise testing on each subject.Results: There are significant differences between the predicted VO2max values of 6-MWT and 6- MAT (p = 0.00). The mean VO2max prediction values of 6-MAT is higher than 6-MWT with 2288.43 mL.min-1 and 1573.72 mL.min-1, respectively.Conclusion: The 6-MAT could be used for assessing VO2max prediction of individuals, although, there is a difference value between the predicted VO2max of the 6-MWT and 6-MAT submaximal exercise testing, with the VO2max value of the 6-MAT higher than the 6-MWT submaximal exercise testing.

Exercise-Based Cardiac Rehabilitation Modulates Prefrontal Cortex Oxygenation during Submaximal Exercise Testing in Cardiovascular Disease Patients

The purpose of this study was to investigate if prefrontal cortex (PFC) oxygenation during incremental exercise is altered among cardiovascular disease (CVD) patients who completed 6 weeks of exercise-based cardiac rehabilitation (CR). Nineteen (male = 14, female = 5; 65.5 ± 11.5 years) participants from an outpatient CR program were enrolled in the study. Each participant completed a submaximal graded treadmill evaluation at intake and again upon completion of 18 individualized CR sessions. Functional near-infrared spectroscopy (fNIRS) imaging was used to measure left- and right- PFC (LPFC and RPFC) oxygenation parameters during the submaximal exercise evaluations. Patients showed improvements in cardiorespiratory capacity (pre 5.5 ± 2.5 vs. post 6.9 ± 2.8 metabolic equivalents (METs)). A significant decrease in LPFC and RPFC oxygenation was observed during the post-CR exercise test compared to pre-CR. CVD patients enrolled in 6 weeks of CR showed significant improvements in functional capacity along with decreased cortical oxygenation during submaximal exercise. Exercise training may cause distribution of cortical resources to motor regions that support sustained exercise.