Unit 4 Flashcards
define movement sequences
a combination of fundamental movement skills and movement
elements to enable a body and/or objects to move in response
to a stimulus; or a planned order of movements
define movement strategy
the variety of approaches that assist a player or team to
successfully achieve a movement outcome or goal; include
moving into space to receive a pass or hitting a ball away from
opponents to make it difficult to retrieve or return the ball
Recognise and explain that energy for physical activity is provided by adenosine triphosphate (ATP):
ATP is able to power cellular processes by transferring a phosphate group to another molecule (phosphorylation). This transfer is carried out by an enzyme that couple the release of energy from ATP to cellular activities that require energy.
Recognise and explain that energy requirements for physical activity:
Involve an on-going process of ATP resynthesizing using various fuel sources – 1) Carbohydrates, 2) fat, 3) protein are fuel sources.
Are provided by the interplay of three different energy systems (overlapping).
Are dependent on the intensity and duration of exercise.
recognise and explain the 3 energy systems
ATP-PC – provides energy anaerobically, without oxygen, for high intensity (explosive power), short duration (0-10 seconds).
Lactic acid/anaerobic glycolysis – provides energy aerobically, without oxygen, for high intensity, moderate (30 seconds to 2minutes), where ATP is resynthesised using muscle glycogen as the fuel, with resulting lactate formation.
Aerobic – provides energy aerobically, with oxygen, for sub-maximal intensity, longer duration (2 minutes plus).
define aerobic capacity
Aerobic capacity – highest oxygen uptake during maximal exercise.
define muscular endurance
Muscular endurance – the ability of a muscle or group of muscles to perform repetitive contractions against a force for an extended period of time.
define speed
Speed – the ability to move all or part of the body as quickly as possible.
define strength
Strength – ability of a muscle or muscle group to exert a maximum amount of force against a resistance.
define power
Power – ability to perform strength-based movement quickly.
define flexibility
Flexibility – the range of motion of a joint, or series of joints to move freely as well as the mobility of muscles.
define agility
Agility – ability to change the position of the body quickly and control the movement.
define VO2 Max
VO2 max is a quantitative figure that refers to the max amount of oxygen uptake you can utilise during exercise. It is representative of one’s cardiovascular fitness.
define lactate threshold
Lactate threshold – the intensity of exercise at which lactate begins to accumulate in the blood at a rate faster than it can be removed.
define onset of blood lactate
Onset of blood lactate accumulation (OBLA) – the point where physical performance is forcibly decreased due to the level of lactate in the blood.
how is ATP resynthesised
a phosphate molecule bonds with ADP to create ATP
- sourced first from phosphate creatine in molecules and then carbs, fat, protein.