TASK 2 Flashcards
ALACTACID SYSTEM info and fuel
90% MHR anaerobic - the ATP-PC system consists of adenosine triphosphate (ATP) and phosphocreatine (PC). This provides immediate energy through the breakdown of these stored high energy phosphates.
LACTIC ACID SYSTEM info and fuel
80-90% MHR Anaerobic - furled by carbohydrates of glucose in the blood and glycogen in muscles. Relies on anaerobic glycolysis (breakdown of glucose to produce ATP) for production of ATP
AEROBIC SYSTEM
60-80% MHR Aerobic - fuelled by carbohydrates stored in muscle/liver as glycogen and fats and proteins.
ENERGY SYSTEMS
Energy systems allow for energy to provide to muscles, resulting in movement. This energy is in the form of adenosine triphosphate (ATP), which converts from chemical to mechanical (movement) energy.
ATP/PC System
- Efficiency of ATP production
- Duration system can operate
- Cause of Fatigue
- By-products
- Process/rate of recovery
- Examples
- Very fast production, limited store of fuel
- 10-12 seconds
- Depletion of creatine phosphate, requiring recovery once ATP stores run out
- Heat
- Replenishment of creatine in cells connecting to phosphates, to be used as PC (full recovery in 2min)
- 100m sprint, discus
LACTIC ACID system
- Efficiency of ATP production
- Duration system can operate
- Cause of Fatigue
- By-products
- Process/rate of recovery
- Examples
- Within 1 sec - rapid production
- 10-30 seconds at a high intensity, can go up to 3 minutes depending on intensity
- Accumulation of lactic acid
- Lactic acid (pyruvic acid and hydrogen ion)
- 30 min - 2 hours, active recovery
- 200m sprint, 400m sprint
Aerobic System
- Efficiency of ATP production
- Duration system can operate
- Cause of Fatigue
- By-products
- Process/rate of recovery
- Examples
- Slow production, endless supply
- Endless supply at low to moderate intensity
- Depletion of glycogen and fat
- Water and Carbon Dioxide
- Up to 48 hours, depending on the level of depletion
- Marathon, triathlon
Types of training
- Aerobic
- Anaerobic
- Flexibility
- Strength
Training methods
- Aerobic = continuous, fartlek, aerobic interval, circuit
- Anaerobic = anaerobic interval
- Flexibility = static, ballistic, PNF, dynamic
- Strength training = free/fixed weights, elastic, hydraulic
Aerobic training
training focused on developing cardiorespiratory endurance, predominantly using the aerobic energy system – focuses on the ability for the athlete to absorb, transport and use oxygen for energy production.
- continuous
- fartlek
- aerobic interval
- circuit
Continuous
- long duration 65-70% at least 20min
- e.g. jogging, swimming, cycling
- Can go as high as 80-90% MHR
Fartlek
- intensity changes between 60-80% MHR, no rest
- uses aerobic and anaerobic system
- e.g. hill and stair sprints, different terrains
Aerobic interval
- timed aerobic activity 60-80% MHR, with rest – good for different positions in sport – generally higher intensity because of breaks
- allows athlete to exercise for longer period at high intensity
- minimises injury due to less rest
Circuit
- interval training with little to no rest
- greater improvements in endurance/strength
- 2 types = fixed resistance (fixed time per exercise) and individual resistance (weights and reps can change for certain duration).
Anaerobic training
training done ‘without oxygen’, using the anaerobic energy systems – focuses on strength, power, speed, lactate removal and muscular endurance).
- anaerobic interval
Flexibility training
the range of movement/motion at your joints and the body’s ability to move freely, it helps to prevent soft tissue injury, and can in some cases strengthen the muscle when applied with isometrics.
Allows for
- preventing soreness and injury
- muscles to stretch
- improved coordination of muscle groups
- posture and stress on joints
- static
- ballistic
- dynamic
- PNF
Static
- stretching a muscle to a length that is uncomfortable, not pianful for a set period of time
- 15-30 sec – most is 30-60sec
- warm ups and cool downs
- e.g. gymnastics, acrobatics, body building
Ballistic
- stretching involving a bounce or swing, often using body force to stretch further than normal ROM
- risk of injury, overriding the stretch reflex
- can cause macro or micro tears
- most suited for sports requiring bouncing or swinging movements e.g. gymnastics, skipping, dance
PNF (proprioceptive neuromuscular Facilitation)
- lengthening a muscle against resistance
- incorporates static stretching through using isometric contractions and periods of rest i.e. stretching hamstring up for 30 sec, then isometric contraction of heel against object, then holding stretch again.
- used in rehab
- muscle is stronger when antagonist is isometrically contracted immediately before
- suited to sports where a joint may be forcefully be taken beyond normal ROM e.g. rugby, American football
Dynamic
- movements taking joints through ROM to produce stretches within specific muscles
- controlled movement, guided by the stretch reflex
- does not force muscle past natural ROM
- imitates movement used in sports
- suited for sports replicating movement used in performance e.g. soccer, rugby, martial arts
Strength training
Any training done to improve overall strength. Strength training affects performance through hypertrophy (growth in myocyte cross-section of muscle) and causes large amounts of stress on the body due to minor tears in the muscle. *sets, reps, resistance and rest
3 major types of muscle actions related to strength training:
- Isotonic – muscle length changes when lifting a constant resistance through a full range of motion (concentric = shortens/against gravity, eccentric = lengths/with gravity)
- Isometric – muscle develops tension but does not change length
- Isokinetic – constant pressure on the muscles (resistance does not change throughout the entire movement)
3 types of strength training focuses
• Absolute strength – maximum force that can be generated by a muscle
• Power – ability to exert force in a short period of time
• Endurance – ability of muscles to repeat muscular contractions against resistance
- Free/fixed weights
- hydraulics
- elastic
Principles of training
Principles of training guide trainers in selecting appropriate types and methods in creating sessions that improve performance – helping to ensure the athlete is reaching optimal performance.
- Progressive overload
- Specificity
- Reversibility
- Variety
- training thresholds
- warm up and cool down
Progressive overload
- when the workload of a session progressively increases and adapts to training
- too much = fatigue/injury
- not enough = plateau in performance
Specificity
- adaptations to training are specific
- Training must be specific to muscle groups, energy systems, fitness components and skills of athletes
- involves physiological adaptations only occurring in response to stress placed on body and only sections that experience stress.
- E.g. weight lifter using ATP/PC system will train to improve anaerobically