Carlos is developing an exercise program to increase his muscle strength. he has been weight training regularly for over a year. his goal is to do 15 repetitions of each exercise at 85% of his maximum strength level, with 5 minutes of rest between sets. based on what you know about the relationship between repetitions, intensity and rest on the strength-endurance continuum, what change should he make to his plan?

How are the causes of the problems viewed? medical model public health model human services model. what is a method of treatment? medical model public health model human service modelj

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[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.