nasm nutrition test practice questions with complete solutions (chapter 3)
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Course
NASM Nutrition
Institution
NASM Nutrition
What best describes an empirical scientific approach?
Controlled observation
What represents a weakness of observational studies?
Correlation does not equal causation(cause for a result)
What best represents a weakness of interventional designs?
Small number of subjects
Is S...
nasm nutrition (chapter 3)
What best describes an empirical scientific approach?correct answerControlled observation
What represents a weakness of observational studies?correct answerCorrelation does not equal causation(cause for a result)
What best represents a weakness of interventional designs?correct answerSmall number of subjects
Is Scientific evidence fixed and immutable?correct answerFalse
Scientists randomly assign subjects to a low or high carbohydrate group and then look at changes in body weight over 3 months. What item represents the independent variable in this study?correct answerdiet type
Scientists find that a protein supplement increases lean mass in the elderly. However, they caution that the results may not apply to other populations, like younger people. What term best describes what the scientists are referring to?correct answerExternal validity
A scientist proposes that sugar is inherently fattening, and performs a study comparing a high-sugar diet to a low-sugar diet with equal calories. He finds that fat gain was the same between the diets. What term describes how this study effects the initial proposal?correct answerFalsification(falsifying information or a theory.)
What observational study design allows scientists to hypothesize a potential causal association?correct answerCohort study(a group of people with a common statistical characteristic)
Fructose has been shown in studies to have adverse effects on blood triglycerides when consumed in excess of calorie needs. However, moderate doses of fructose have been shown to have no effect. What item best describes the conclusion that should be drawn from this data?correct answerFructose intake poses no risk to triglycerides when consumed within energy needs, but caution is warranted if calorie intake is high.
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