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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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echobush echobush
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Posts: 35
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9 years ago
The incidence of upper respiratory infections is lowest in which of the following?
   A) strenuous exercisers
   B) moderate exercisers
   C) sedentary people
   D) both groups of exercisers have similarly low incidences
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#1
Educator
9 years ago
It's either B or C. Confounded Face

Prolonged, intense exercise causes immunosuppression, while moderate intensity exercise improves immune function and potentially reduces risk and severity of respiratory viral infection. Here, based upon available evidence, we present a model whereby moderate exercise-induced increases in stress hormones reduce excessive local inflammation and skew the immune response away from a Th1 and towards a Th2 phenotype, thus improving outcomes following respiratory viral infection.

Source  http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2803113/
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echobush Authorechobush
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#2
Posts: 35
Rep: 2 0
9 years ago
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