Author Question: Scientists use many techniques to decrease bias in studies. What do scientists call the technique in ... (Read 95 times)

washai · **on:** Aug 20, 2018

Scientists use many techniques to decrease bias in studies. What do scientists call the technique in which the participants do not know if they are receiving the actual treatment or a fake?
a. Blinding
b. Randomization
c. Use of control groups
d. Use of placebos

Question 2

Jim, a 21-year-old, medium-frame 62 senior weighing in at 205 lbs is a very active varsity wrestler majoring in psychology. He is participating in a Hydration Study that includes the collection of the following data: body composition analysis utilizing the Bod Pod, food/beverage intake via dietary assessment questionnaire, urine sample, and analysis of saliva. The following data have been provided to assist in answering the questions.

Bod Pod Results:
59 body water
86.7 lean mass
13.3 fat mass

Reference Values for Bod Pod:
Risky (high body fat) = men: >30; women: >40
Excess fat = men: 21-30; women: 31-40
Moderately lean = men: 13-20; women: 23-30
Lean = men: 9-12; women: 19-22
Ultra lean = men: 5-8; women: 15-18
Risky (low body fat) = men: <5; women: <15

24-Hour Recall:
3540 kcalories
177 grams protein
118 grams fat

Males: EER = 662 - 9.53 x Age (y) + PA x (15.91 x weight in kg) + (539.6 x height in m)
PA Values: Sedentary = 1.0, Low Active = 1.11, Active = 1.25, Very Active = 1.48
How many total kcalories would Jim require post season to meet his estimated energy requirements (EER)?
a. 2958
b. 3325
c. 3665
d. 4157