Why is it important for us that we identify the proper posture, body position and the mechanics in executing the "set" skill in volleyball.

What is the targeted temp during acls

[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.

Which of the following is not true about a good stretching routine? a). can be hurried up once have it memorized b). improves issue elasticity and flexibility c). should last a minimum of five minutes d). prevents injury and increase athletic performance