Aerobic capacity is a key fitness component that underpins all endurance-based work.
Aerobic capacity is the ability of the body to inspire, transport and utilise oxygen to perform sustained periods of aerobic activity.
Physiological make-up:
The greater the efficiency of body systems to transport and utilise O2 = hihgher VO2 max; can be determined by genetics. Stronger respiratory muscles, larger heart, SV, CO, increased number of RCBs, capillaries, SO fibres = higher VO2 max.
From age 20, VO2 max drops 1% each year. Efficiency is lost in elasticity of the heart, blood vessels and lung tissue = lower VO2 max.
Females have lower VO2 max than males. Females have higher body fat, smaller lung volumes, lower haemoglobin levels = lower VO2 max.
Aerobic training increases VO2 max up to 20%. Aerobic training causes long-term adaptations to the heart, lungs and blood = higher VO2 max.
There are 4 methods of evaluating aerobic capacity; direct gas analysis; cooper 12 minute run; NCF multi stage fitness test; queens college step test.
Direct gas analysis is expired air captures, results graphed and a calculation used.
Cooper 12 minute run is run as far as possible in 12 minutes (calculations used).
NCF multi stage fitness test is 20m progressive shuttle run; results compared to standardised tables.
Queens college step test is stepping on and off box for 3 minutes; HR recovery used to predict results.
An advantage of direct gas analysis is it is a direct measurement of VO2 max.
An advantage of direct gas analysis is it is accurate and reliable.
An advantage of direct gas analysis is it uses different exercises.
An advantage of cooper 12 minute run is it is good for large groups.
An advantage of cooper 12 minute run is you can test yourself.
An advantage of cooper 12 minute run is it is simple/cheap.
An advantage of NCF multi stage fitness test is it is good for large groups.
An advantage of NCF multi stage fitness test is it is simple and cheap.
An advantage of NCF multi stage fitness test is there are published tables of VO2 max equivalents.
An advantage of queens college step test is it is a sub-maximal test.
An advantage of queens college step test is it is simple and cheap.
An advantage of queens college step test is HR is easily monitored.
An advantage of queens college step test is there are published table of data and simple VO2 max calculations.
A disadvantage of queens college step test is it is only a prediction.
A disadvantage of queens college step test is HR recovery can be affected by lots of factors.
A disadvantage of queens college step test is it is not sport specific.
A disadvantage of queens college step test is shorter subjects may be at a disadvantage.
A disadvantage of NCF multi stage fitness test is it is only a prediction.
A disadvantage of queens college step test is the results are affected by a subjects motivation.
A disadvantage of queens college step test is it is not suitable for elderly or those with health problems.
A disadvantage of queens college step test is it is not sports-specific.
A disadvantage of cooper 12 minute run is it is only a prediction.
A disadvantage of queens college step test is the result is affected by a subjects motivation.
A disadvantage of queens college step test is it is not suitable for elderly or those with health problems.
A disadvantage of queens college step test is it is not sport-specific.
A disadvantage of direct gas analysis is it is a maximal test to exhaustion.
A disadvantage of direct gas analysis is it is not suitable for elderly or those with health problems.
A disadvantage of direct gas analysis is specialist equipment is required.
Continuous training is low-moderate (60-80% of max HR), lasts 20-80 minutes.