الفهرس 
Effect OF Traditional Versus Virtual Reality Simulated Aerobic Exercises On Cognitive Function And Exercise Tolerance In Post Covid-19
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Abstract
Post COVID -19 patients have common complaints including cognitive impairment, dyspnea, exercise intolerance, fatigue, quality of life impairment, bad mood, sleep difficulties, and lowered satisfaction level. Aim of the study: is to compare the effect of virtual reality- simulated aerobic exercise to the effect of traditional aerobic exercise with respect to cognitive function, exercise tolerance, dyspnea, fatigue, quality of life, sleep quality, mood and satisfaction in post-covid-19 patients. Materials and methods: Twenty patients both sexes recruited from chest diseases hospital in El-Mahalla Elkoubra, aged from 30-60 years were randomly assigned into two groups: group A which received traditional aerobic exercise and group B which received virtual reality simulated aerobic exercise. Both groups received moderate-intensity aerobic exercises on a treadmill at 50-60% (peak HR-resting HR) + resting HR for 30-45 min, three times per week, and for 4 weeks. At baseline, patients underwent exercise tolerance test to determine peak heart rate necessary to prescribe the intensity of exercise. The outcome measures were Montreal Cognitive Assessment (MoCA) questionnaire, the time to exhaustion to assess exercise tolerance, Modified Medical Research Council (MMRC) dyspnea scale, Chalder Fatigue Scale, the COVID-19–Impact on Quality of Life (COV19-QoL) scale, Pittsburgh Sleep Index (PSQI), Brief Assessment of Mood (BAM) scale, and satisfaction level scale. Results: The results showed that cognitive function assessed by MoCA improved significantly in groups A and B by 15.88% and 13.13%, respectively. Exercise tolerance, assessed by time to exhaustion improved significantly in groups A and B by 124.15% and 100.8%, respectively. Dyspnea assessed by MMRC improved significantly in groups A and B by 70.98% and 63.23%, respectively. Fatigue assessed by Chalder Fatigue Scale improved significantly in groups A and B by 52.91% and 38.93%, respectively. Quality of life assessed by COV19-QoL improved significantly in groups A and B by 23.37% and 21.87%, respectively. Sleep quality assessed by PSQI improved significantly in groups A and B by 15.88% and 13.13%, respectively. Mood assessed by the BAM scale improved significantly in groups A and B by 55.61% and 47.58 %, respectively. Comparing both groups after treatment revealed that there was no statistical difference in all variables measured between the two groups (P>0.05) except for the satisfaction level which was significantly higher in group B (VR group) than in group A (p=0.037). Conclusion: Both traditional and VR-simulated moderate-intensity aerobic exercises could be equally effective in inducing significant improvements in cognitive function, exercise tolerance, breathlessness, fatigue, quality of life, sleep, and mood but not the satisfaction level that was higher in the VR group in COVID-19 recovered patients.