Based on the eperimental descriptions below, please answer questions about the d
ID: 3504980 • Letter: B
Question
Based on the eperimental descriptions below, please answer questions about the design of the experiments.
Experiment 1: Effects of exercise
In the previous lab, you determined the effects of exercising for 3 minutes on a bicycle ergometer for all students in the class to answer the research question: What is the effect of exercise on heart rate and breathing rate in college students, as compared to a resting state?
Experiment 2: Let's consider a different experiment to answer the same research question.
Imagine we had divided the class into two groups. One group started by resting for 3 minutes, then after a 2-minute break, exercised for 3 minutes on a bicycle ergometer. Breathing rate and heart rate were collected after 3 minutes at each condition. The second group started by exercising for 3 minutes on a bicycle ergometer, then after a 2-minute break, rested for 3 minutes. Breathing rate and heart rate for each condition (resting and exercise) were collected after 3 minutes.
a. What basic type of study design does this experiment use to answer the research question?
-descriptive
-experimental
-neither
b. More specifically, what type of study design does this experiment use to answer the research question?
-case study
-cross-over
-cross-sectional
-longitudinal
-pre/post
-randomized, controlled
-retrospective
-time series
Explanation / Answer
From experiment 1: After exercise our herat rate is become incresed and breathing rate is also incresed as compared to the resting stage. Because when we are doing some exercise like bicycle. this is a cardiovascular type of exercise. as our heart also a type of muscle. when it worrks it burn the calories of our body, then our muscle need more oxygen than resting time.so breathing rate is increses to bring more oxygen. simultanously our heart rate als increses.
From experiment 2 : a, Experimental type of study design does this experiment use to answer the research question.
b,More specifically, case study design does this experiment use to answer the research question.
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