Stretching that uses neuromuscular reflexes to gain further stretching of the muscle is called

a: pnf stretching, b: static stretching, c: ballistic stretching, d: dynamic stretching

[120 total points] (public health) in one of the largest human experiments ever conducted, in 1954 a randomized controlled trial was run to see whether a vaccine developed by a doctor named jonas salk was effective in preventing paralytic polio. a total of 401,974 children (ages 6–9), chosen to be representative of those who might be susceptible to the disease, were randomized to two groups: 200,745 children (the control group c) were injected with a harmless saline solution (a placebo) and the other 201,229 children (the treatment group t) were injected with salk’s vaccine.what was the point of giving saline solution to the children who didn’t get the vaccine? explain briefly.

Anorex nervosa can be prevented but it can not be treated

(05.04 lc) what is a health problem typically experienced by children and teens who smoke regularly? mouth cancer poor lung growth or function seizures stomach pain or digestion issues