Exercise has long been linked to better immune health, but much less is known about what happens inside individual immune cells as fitness increases. A new study examined how cardiorespiratory fitness is linked to energy use and signaling in cytotoxic T cells, immune cells that help destroy infected or abnormal cells. The study included 43 healthy adults aged 20 to 40. Each participant completed a demanding cycling test to estimate their aerobic fitness, meaning how well the body delivers and uses oxygen during hard exercise. Using resting blood samples, researchers analyzed cytotoxic T cells ... exercise immune system
Read moreChemotherapy often causes problems with memory, concentration, and mental fatigue, but clinics still do not have a standard way to treat these symptoms. In a large new trial, researchers tested whether a simple at-home exercise plan could help protect cognitive function during treatment and support healthy immune activity among cancer patients. The phase 3 trial included 687 adults who were starting chemotherapy at 20 oncology clinics across the United States. Participants were randomly assigned to usual care or to EXCAP, a six-week home program that combined walking with resistance-band exer... cancer exercise
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Watch nowPeople who regularly engage in high-intensity aerobic exercise have nearly half as many upper respiratory infections as sedentary people, a 2010 study found. Those who engage in high-intensity aerobic exercise also experience fewer and less severe upper respiratory symptoms than those who engage in lower-intensity exercise. Researchers tracked the number and severity of respiratory infections during the fall and winter of a single year among more than 1,000 adults. The participants, who were between the ages of 18 and 85 years, provided information about the frequency and intensity of their a... exercise immune system
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