WorksheetsThe role of oxygen in performance
Total questions: 10
Worksheet time: 5mins
VO2 max is defined as
the maximum amount of oxygen an individual can consume in a minute.
the maximum amount of oxygen an individual can consume every breath.
a measure of overall sporting performance.
a measure of oxygen debt volume.
Lactate turn point is best described as the point at which
oxygen consumption meets oxygen demand and OBLA occurs.
lactic acid accumulates in the working muscles causing negative effects.
begins to accumulate in the muscles at a faster rate than it can be removed.
respiration decreases to reduce the lactate build up in the muscles.
Which of the following organs in the body contributes directly to the delivery of oxygen to working muscles?
liver
heart
bones
skin
Changes that occur in the body in response to training are known as
physiological growth
physiological improvements
physiological developments
physiological adaptations
VO2 max is a strong indicator of an individual’s
aerobic capacity
fitness
lactate turn point
oxygen deficit
Blood lactate
is metabolised from sugar.
prevents the resynthesis of ATP.
is derived from oxygen in the bloodstream.
is a major contributor to fatigue during high intensity physical activities.
An athlete wanting to train in the lactate threshold training zone should do so at between
70 and 75% of their maximum heart rate.
80 and 85% of their maximum heart rate.
90 and 95% of their maximum heart rate.
95 and 100% of their maximum heart rate.
The graph shows the blood lactate concentration for two male athletes (i.e. Athlete A and Athlete B) at various exercise intensities. Athlete B reaches his lactate threshold at approximately:
25% VO2 max.
50% VO2 max.
75% VO2 max.
100% VO2 max.
Training in the anaerobic training zone can
enhance aerobic capacity as well as anaerobic fitness components such as speed and power.
only enhance anaerobic fitness components such as speed and power.
only enhance aerobic capacity.
enhance aerobic capacity if the zone is maintained for durations of greater than 20 minutes.
Which of the following is an example of an acute physiological adaptation that takes place in response to exercise?
sweating
increased lung capacity
increased size and strength of the heart
increased muscle mass
