If your doctor advised you to lose or gain weight, which approach would work best for you and why?

To confirm when to exclude children from school, it's recommended that you refer to guidelines from which of the following organizations? a. national association for child care professionals b. academy of family practices c. american academy of pediatrics d. national association for the education of young children

Describe the concept of interval training. what is the benefit of this type of training?

[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.