A new study suggests preload deficiency could be the underlying cause of fatigue and exercise intolerance in people with systemic lupus erythematosus (SLE). Preload deficiency is a condition where the ...
Exercise intolerance, or the inability to perform physical activity at the expected or desired level, is one of the many symptoms associated with long COVID. In a study, Yale researchers help explain ...
Bradycardia does not often cause symptoms. If symptoms of bradycardia do occur, they may include fatigue, lightheadedness, and exercise intolerance. A slow heart rate in young people or athletes or ...