Chapter 6 Strength and Conditioning
Which of the following explains the differences in aerobic power between men and women who are matched by age? Men have a smaller blood volume. Women have a higher percentage of body fat. Women have higher blood hemoglobin values. Men have a smaller heart size.
Women have a higher percentage of body fat.
Which of the following areas of the pulmonary system is not functional for gas exchange in healthy athletes? anatomical dead space bronchi bronchioles physiological dead space
anatomical dead space
Which of the following is a potential marker of aerobic overtraining? decreased total testosterone concentration increased body fat percentage increased heart rate variability decreased submaximal exercise heart rate
decreased total testosterone concentration
Stroke volume is regulated by which of the following mechanisms? catecholamines and end-systolic volume end-systolic volume and skeletal muscle pump skeletal muscle pump and end-diastolic volume end-diastolic volume and catecholamines
end-diastolic volume and catecholamines
Which of the following are the immediate physiological adjustments to elevation (>3,900 ft [1,200 m])? decreased number of mitochondria and increased capillary density excretion of HCO3- and decreased plasma volume hyperventilation and increased cardiac output increased maximal heart rate and decreased stroke volume
hyperventilation and increased cardiac output (long term) excretion of HCO3- decreased plasma volume decreased stroke volume Increase number of mitochondria increased capillary density decreased maximal heart rate
Which of the following is an effect of the Frank-Starling mechanism? increased cardiac emptying decreased volume of systolic ejection increased parasympathetic stimulation decreased stretch of the myocardial fibers
increased cardiac emptying
All of the following are reasons why maximal aerobic power decreases with age EXCEPT lowered incidence of sarcopenia increased fat mass decreased muscle mass reduced muscle strength
lowered incidence of sarcopenia
Which of the following physiological characteristics decreases as an adaptation to aerobic endurance training? resting arteriovenous oxygen difference maximal fiber shortening velocity maximal stroke volume resting cardiac output
resting cardiac output
Which of the following is the standard deviation of the 220 - age in years equation to estimate maximal heart rate? ±10 to 12 beats/min ±6 to 8 beats/min ±2 to 4 beats/min ±14 to 16 beats/min
±10 to 12 beats/min
What is the MET equivalent of a of 55.0 ml·kg-1·min-1? 15.7 2.1 55.0 192.5
(55.0 ml·kg-1·min-1) / 3.5 ml·kg-1·min-1 = 15.7
