4. An experiment involving 40 human subjects was conducted to examine the effect

Question

4. An experiment involving 40 human subjects was conducted to examine the effects of anabolic steroids on muscle strength. Two groups were randomly established. Control Group 20 subjects Same diet Same exercise regimen Experimental Group 20 subjects Same diet Same exercise regimen Anabolic steroids a. What is the experimental variable in this experiment? b. Name three ways this experiment could be improved. 2. 3. 5. John was overweight and decided it was time to shed some unwanted pounds. He decided to in- crease his level of physical activity and began walking a mile every day. He reduced his daily total caloric intake by 500 kcal. John also made the conscious decision to eat exclusively "Slimway" submarine sandwiches for every meal. After a month of these lifestyle and behavior modifica- tions, John lost ten pounds. John attributed this weight loss to the "Slimway" sandwiches and is now contemplating becoming a spokesperson for this franchise. a. Do you think "Slimway" sandwiches were solely responsible for John's weight loss? Why or why not? b. Do you think if John reduced his daily caloric intake by 500 kcal, walked a mile every day and did not eat "Slimway" sandwiches that he would still ose weight? Why or why not

Explanation / Answer

A) the variable is steroids.

B) 1. One can add more variables, as in the amount of steroids, type etc.

2. Alongside the control group one may add placebo groups

3) to increase the reliability of the study, repetition and reproducibility is necessary

5. A. No. Just by eating a low fat slim sandwhich weight loss is not possible. A combination of exercise and controlled diet is always required to reduce weight. You cannot lose weight just by following either of the option

Yes, he would still lose weight because of increase exercise and decreased calorie intake. Slimway helps fastening the metabolism and may accerlerate the process of weight loss

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