Which of the following identifies the dependent variable in this experiment? A the concentration of blood lactate с D the duration of the recovery period the ingestion of oxygen supplemented water the intensity of the exercise

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Blood lactate is a biochemical by-product that is produced during high-intensity exercise
due to insufficient oxygen intake. Commercially available drinks advertised as oxygen sup-
plements claim to increase exercise performance and decrease the postexercise recovery
period by decreasing the accumulation and accelerating the removal of blood lactate.
To test this claim, researchers conducted a controlled experiment to compare the concen-
tration of blood lactate during exercise and during recovery between two participant
groups, one that ingested oxygen-supplemented water and another that ingested regular
water.
blood lactate (millimole/liter)
U
A
B
start
с
Exercise
D
middle
-o-oxygen-supplemented water
regular water
finish
The mean blood lactate concentration during exercise (left) and recovery (right)
Which of the following identifies the dependent variable in this experiment?
the concentration of blood lactate
the duration of the recovery period
blood lactate (mmol/liter)
the ingestion of oxygen-supplemented water
the intensity of the exercise
b
Recovery
36 9 12 15 18 21 24 27 30
time (mins)
--oxygen-supplemented water
regular water
Transcribed Image Text:Blood lactate is a biochemical by-product that is produced during high-intensity exercise due to insufficient oxygen intake. Commercially available drinks advertised as oxygen sup- plements claim to increase exercise performance and decrease the postexercise recovery period by decreasing the accumulation and accelerating the removal of blood lactate. To test this claim, researchers conducted a controlled experiment to compare the concen- tration of blood lactate during exercise and during recovery between two participant groups, one that ingested oxygen-supplemented water and another that ingested regular water. blood lactate (millimole/liter) U A B start с Exercise D middle -o-oxygen-supplemented water regular water finish The mean blood lactate concentration during exercise (left) and recovery (right) Which of the following identifies the dependent variable in this experiment? the concentration of blood lactate the duration of the recovery period blood lactate (mmol/liter) the ingestion of oxygen-supplemented water the intensity of the exercise b Recovery 36 9 12 15 18 21 24 27 30 time (mins) --oxygen-supplemented water regular water
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