Chapter 13
The average VO2 max value for the young male sedentary population is
35 ml • kg-1 • min-1
In order to achieve improvements in VO2 max, highly trained individuals may need to train at intensities of
95-100% VO2 max
The enhanced capacity of the trained muscle to use fatty acids as a fuel results in
All of these: decreased utilization of muscle glycogen decreased lactate formation sparing of blood glucose
The increase in VO2 max following training is caused by an increase in
both maximal stroke volume and maximal a-vO2 difference
In terms of the factors that limit VO2 max, improvements elicited by endurance training generally first affect ____________, and then ___________ after several weeks/months
cardiac output; a-vO2 difference
Following endurance training, maximal cardiac output during exercise is increased due to an increase in ventricular muscle tissue thickness
false
Lactate removal is greater following an endurance training program because blood flow to muscle is decreased, and liver blood flow is increased at the same work rate.
false
The majority of evidence demonstrates that resistance training-induced muscle hypertrophy is the result of muscle fiber hyperplasia
false
Which of the following training adaptations does not result in lower lactate production?
increased glycogen utilization
In the first 10 weeks of a resistance training program, the gains in strength are due primarily to
neural adaptations
The systematic process in which the volume and intensity of training are varied over time is
periodization
Following training, if the increase in maximal cardiac output is balanced with a decrease in peripheral resistance, the mean arterial blood pressure will
remain the same
Endurance training results in increased mitochondrial and capillary density in muscle but has no effect on muscle glycolytic capacity. This is an example of what training principle?
specificity
Cross-sectional studies show that the cardiovascular variable responsible for the large variation in VO2 max in the normal population is maximal
stroke volume
Following endurance training, afterload decreases during maximal exercise because there is a decrease in sympathetic vasoconstrictor activity in the arterioles of the exercising
true
Reducing the number of motor units required to perform an exercise task may reduce the heart rate and ventilation required to perform the task
true
Research indicates that anyone can increase his or her VO2 max with training, yet a genetic predisposition is required to have a VO2 max comparable to that of an elite endurance athlete.
true
The initial decrease in VO2 max with detraining occurs because skeletal muscle adaptations (a-vO2 difference) are lost
False
The changes in the heart rate and ventilatory responses to a fixed submaximal work rate are lower after an endurance training program. These changes are due primarily to changes in the
active skeletal muscles
The increase in the maximal a-vO2 difference is due to all of the following except
an increase in hemoglobin