Preparation and Training Methods Flashcards
define aerobic capacity
the ability of the body to inspire, transport and utilise oxygen to perform sustained periods of anaerobic activity.
what is VO2max measured in
ml/kg/min
define VO2max
the maximum volume of oxygen inspired, transported and utilised per minute during exhaustive exercise
what percentage of an untrained athletes VO2max work up to before fatiguing
50-60%
what % of an aerobic athletes VO2max will they be able to train up to before fatiguing
an excess of 85%
explain the impact of age of VO2max
- from early 20s VO2max declines as we age and becomes less efficient (approx. 1% per year)
due to - lost elasticity of heart
- blood vessels and lung tissue walls age and reduce in efficiency to inspire and transport oxygen
explain the impact of gender on VO2max
- females tend to have 15-30% lower VO2 max than males from the same age group
because - females have a smaller left ventricle/ a lower stroke volume
- lower maximum cardiac output
explain the impact of training on VO2max
- aerobic training will increase VO2max by 10-20%. In ageing performers aerobic training will maintain or reduce any decline of VO2max
because. .. - aerobic training causes long term adaptions such as
- increased respiratory muscle strength
- increased haemoglobin, myoglobin and mitochondria levels
describe the impact of physiological make up on VO2max
- the greater the efficiency of an individuals respiratory system, cardiovascular system and muscle cells to inspire, transport and utilise oxygen the higher the VO2max
what tests can be used to measure aerobic capacity/ VO2max
- multi-stage fitness test
- direct gas analysis
- Queen’s college step test
- 12 min cooper run
describe the multi-stage fitness test
- subject performs a continuous 20m shuttle run test at progressive intensities until exhaustion
- each shuttle will be times to an audio cue
- the test is over when the subject cannot complete the shuttle in the allocated time
- a level and shuttle number will be given which predicts the VO2max from a standardised comparison table
state he advantages of the multi-stage fitness test
- large groups can do the test at the same time
- only simple and cheap equipment is required
- there are published tables of VO2max equivalents for comparisons
state the disadvantages of the multi-stage fitness test
- it is only a prediction of VO2max, not a measurement
- the test is maximal subject to motivation
- cannot be used by the elderly or by people who have heart conditions
- the test is not sport specific
describe direct gas analysis
- maximal test until exhaustion
- performer measured at increasing level of intensity while running/ cycling/ rowing/ swimming etc.
- computer analyses O2 inspired and expired
- it calculates VO2max consumed by muscles
state the advantages of direct gas analysis
- direct objective measurement of VO2max
- accurate, valid and reliable measure
- test can be performed during different exercises
state the disadvantage of direct gas analysis
- a maximal test until exhaustion
- cannot be used with the elderly or people with heart conditions
- access to specialist equipment is required
describe the queen’s college step test
- subject performs continuous stepping on and off a box of 41.3 cm for a period of 3 mins
- HR is taken 5 seconds after completing test for 15 seconds
- HR recovery is used to predict VO2max with simple equation
state the advantages of the queen’s college step test
- submaximal test
- simple and cheap equipment required
- HR is easily monitored
- published tables of normative data and simple VO2max calculation
state the disadvantages of the queen’s college step test
- prediction of VO2max not a measurement
- HR recovery will be effected by prior exercise, food and fluid intake
- test is not sport specific
- step height may be a disadvantage to shorter subjects
describe the 12 minute cooper run
- subject performs continuous running to achieve a maximal distance within 12 mins
- usually performed on a 400m running track with cones placed at intervals
- at the end of the 12 mins the test ends and a total distance is recorded. maximal intensity test which uses a simple calculation to predict VO2max
state the advantages of the 12 minute cooper run
- large groups can perform the test at the same time
- a subject could administer their own test
- simple and cheap equipment is required
- HR is easily monitored
- published tables of normative data and simple VO2max calculation
state the disadvantages of the 12 minute cooper run
- prediction of VO2max, not measured
- maximal test subject to motivation
- can’t be used with the elderly or people with heart conditions
- test is not sport specific
what training methods can be used to develop aerobic capacity
- continuous training
- HIIT
define continuous training
steady-state low to moderate intensity work for a prolonged period of time
describe continuous training
- 60-80% of max heart rate
- 20+ mins
- no rest intervals
- 2/3+ times a week
- develops stamina and improves cardiovascular and respiratory systems increasing the ability to transport oxygen and use of oxygen becomes more efficient
define HIIT training
repeated bouts of high intensity work followed by varied recovery times
describe HIIT
- periods of high intensity work and rest periods
- 20-60 mins for a full session
- work intensity 80-95% max HR
- work duration 5 secs - 8 mins
- 4-10 sets/ 10 reps
- recovery intensity 40-50% max HR
- work: relief = 2:1
why is HIIT considered more effective than continuous
because. ..
- higher calorie consumption
- faster adaptations to training
- performers can train at higher intensity for longer
- quicker sessions
- individuals with different fitness levels can train together
state the frequency, intensity and duration of continuous training
- frequency = 2/3+ times per week
- intensity = 60-80% VO2/maxHR
- duration = 20+ mins no breaks
state the intensity and duration of both work and recovery period of HIIT exercise
work:
- intensity = 80-95% maxHR
- duration = 5secs - 8 mins
recovery:
- intensity = 40-50% maxHR
- duration = 2:1 work to relief
solve the acronym SPORTT
S- specific (muscle/patters/energy systems)
P- progression (keep increasing workload)
O- overload ( keep pushing body)
R- reversibility (maintain to avoid adaption loss)
T- tedium/ variance (change method to avoid boredom)
T- test ( before and after to see improveements)
list the physiological adaptations of aerobic training of the cardiovascular systems
- cardiac hypertrophy
- increased elasticity of arteriole walls
- increased blood/ plasma volume
- increased haemoglobin count
describe and explain the overall physiological adaptations of aerobic training on cardiovascualr systems
- increased blood flow and oxygen transport to the muscle cells
- decreased blood pressure
- makes it easier to perform exercise, reduce onset of fatigue, delays OBLA, and increase the intensity and duration of performance
- lower risk of coronary heart disease, hypertension and stroke
describe and explain the functional effect of cardiac hypertrophy on the cardio-vascular system as a result of aerobic training
- increased stroke volume (at rest& during exercise) and cardiac output (at rest)
- due to increased filling capacity and force of ventricular contraction
- decreased resting heart rate and HR recovery after exercise
describe and explain the functional effects of increased blood/ plasma volume on the cardio-vascular system as a result of aerobic training
- lower blood viscosity
- so aids blood flow and venous return
describe and explain the functional effects of capillarisation surrounding alveoli and slow oxidative muscle fibres on the cardio-vascular system as a result of aerobic training
increased surface area for blood flow
- increased gaseous exchange
- decreased distance for diffusion
describe and explain overall physiological adaptations of aerobic training on the respiratory system
- increased volume of oxygen diffused into the blood stream
- decreased frequency of breathing at rest and during submax exercise
- makes it easier to perform exercise, reduces the onset of fatigue, delays OBLA and increases the intensity and duration of performance
- alleviates the symptoms of asthma
list the physiological adaptions of aerobic training on the respiratory systems
- stronger respiratory muscles
- increased surface area of alveoli
describe and explain the functional effects of stronger respiratory muscles on the respiratory system as a result of aerobic training
increased mechanics of breathing efficiency
- increased maximal lung volumes
- decreased respiratory fatigue
describe and explain the functional effects of decreased fat mass on metabolic function as a result of aerobic training
- increased lean mass
- increased metabolic rate
- increased breakdown of triglycerides
describe and explain the functional effect of increased activity of aerobic enzymes on metabolic function as a result of aerobic training
increased metabolism of triglycerides and glycogen
describe and explain the functional effect of decreased insulin resistance on metabolic function as a result of aerobic training
improved glucose tolerance, treatment and prevention of type 2 diabetes
describe and explain the functional effects of increased surface area of alveoli on the respiratory system as a result of aerobic training
increased external gaseous exchange
list the physiological adaptions of aerobic training on the muskulo-skeletal systems
- increased stores of myoglobin
- increased stores of glycogen and triglycerides
- fast oxidative glycolytic fibres become more aerobic
- increased strength of connective tissues
describe and explain the overall physiological adaptions of aerobic training for the muskulo-skeletal systems
increased capacity of aerobic energy production
increased joint stability
- makes it easier to perform exercise, reduces the onset of fatigue, delays OBLA, and increases the intensity and duration of performance
- increased metabolic rate, increasing energy expenditure and managing weight
- decreased risk of injury, osteoporosis and osteoarthritis
describe and explain the functional effect of slow oxidative fibre hypertrophy on the muskulo-skeletal system as a result of aerobic training
increased potential for aerobic energy production
- increase in strength, decreased energy cost, which delays fatigue
describe and explain the functional effects of increased size and density of mitochondria on the muskulo-skeletal system as a result of aerobic training
increased utilisation of oxygen
- increased aerobic energy production
- increased metabolism of triglycerides
describe and explain the functional effects of increased myoglobin stores on the muskulo-skeletal system as a result of aerobic training
increased storage and transport of oxygen to the mitochondria
describe and explain the functional effects of increased triglycerides and glycogen stores on the muskulo-skeletal system as a result of aerobic training
increased aerobic energy fuels
- increased duration of performnance
describe and explain the functional effects pf fast oxidative glycolytic fibres become more aerobic on the muskulo-skeletal system as a result of aerobic training
increased aerobic energy production, fuel and oxygen utilisation
describe and explain the functional effects of increased strength of connective tissue on the muskulo-skeletal system as a result of aerobic training
tendons and ligaments strengthen
- increases joint stability and decreases the risk of injury
describe and explain the functional effects of increased thickness of articular cartilage on the muskulo-skeletal system as a result of aerobic training
increased synovial fluid production
- nourished articular cartilage and joint lubrication
describe and explain the functional effects of increased bone mineral density on the muskulo-skeletal system as a result of aerobic training
increased calcium absorption
- increased bone strength, decreased risk of injury
define static strength
force is applied against a resistance without any movement occurring
define dynamic strength
force is applied against a resistance and muscles change length concentrically or concentrically
what is dynamic strength also known as
power output
what is power output
a combination of speed and strength
define maximal strength
the maximum force that can be exerted by a muscle in 1 contraction
define explosive strength
the ability to produce a maximal amount of force in one of a series of muscular contractions
define strength endurance
the ability to sustain a number of muscular contraction for a period of time withstanding fatigue
what are the factors that effect strength
- cross sectional area
- fibre types
describe and explain the effect the cross sectional area of a muscle on strength
the greater the cross sectional area, the greater the force of contraction