Mr Shaw Flashcards
Anticipatory rise
An increase in HR prior to exercise, due to the release of adrenalin
Arterio-venous oxygen difference (A-VO2 diff)
The difference in the oxygen content of the blood between the arterial blood and the venous blood
Cardiac conduction system (CCC)
A group of specialised cardiac muscle cells in the walls of the heart that send signals to the heart muscle,causing it to contract. The main components of the CCC are;
•the SA node
•AV node
•bundle of His
Oxygen defecit
The difference between the oxygen required during exercise and the oxygen supplied and utilised. Occurs at the onset of exercise.
Receptors
Part of the nervous system that detects changes in the body. Types of receptors;
•Baroreceptor- located in blood vessels, detects changes in blood pressure
•chemoreceptor-monitors and detects changes in the blood acidity
VO2 max
The maximum amount of oxygen that can be taken in, transported and used by the body per minute. Measured in millilitres for each kilogram body weight each minute (ml/kg/min)
High intensity interval training (HIIT)
An exercise strategy alternating periods of short intense anaerobic exercise with less-intense recovery periods
Altitude training(traditional)
Training at altitude where there is less oxygen.The body adapts by making more red blood cells to carry oxygen. These additional red blood cells are an advantage for endurance athletes returning to sea level to compete.
Excess post exercise oxygen consumption (EPOC)
Increased rate if oxygen intake following strenuous activity, intended to pay back the oxygen deficit.
Respiratory change ratio (RER)
The ratio of carbon dioxide produced to the oxygen consumed
Acute injury
Sudden event where the cause and onset of pain are identifiable, eg fracture,sprain
Chronic injury
Also know as an overuse injury which occurs over time eg Achilles tendonitis, stress fracture
Momentum
The quantity of motion of a body. Mass multiplied by velocity. Measured in kg m/s or Ns
