Exam 1 Flashcards
What is not an important determinant of endurance performance?
Quantity of type II muscle fibres
There is a strong correlation between performance in endurance events and the lactate thershold
True
What does the acronym HRR mean?
Heart Rate Reserve
If an untrained person completes a 12-week resistance training programme (3 sessions/week), the cross-sectional area of their type I, IIa, and IIx fibres will decrease.
Fales
The volume of of blood pumped from the left ventricle during one heartbeat is know as the…
Stroke Volume
The left ventricle … in size after a period of endurance training.
Increases
When there is insufficient oxygen availability, pyruvate accumulates in the cytosol of the cell and is converted to …
Lactate
At physiological pH lactic acid dissociates into … ions and lactate.
Hydrogen
Resting and submaximal heart rate … after a period of endurance training.
Decreases
Which type of blood vessel allows exchange of nutrients, wastes, and blood gases?
Capillaries
Which two factors determine the cardiac output?
Heart rate and stroke volume
What are norepinephrine and epinephrine?
Hormones
What region of the brain are norepinephrine and epinephrine released from?
Adrenal medulla
Sprint training can cause a shift in the characteristics of muscle fibres from type … to type … fibres
Type I, Type IIa
What is mitochondrial biogenesis?
Production of new, healthy mitochondria
