Lecture 6 - Measuring Fatigue in Sports Performance Flashcards
What is fatigue?
Failure to produced a desired outcome
What is the different between transient, acute and chronic fatigue?
Transient:
Momentarily not producing outcome
Lower performance = increase in these
Acute:
Post-training DOMS - micro-traumas
Chronic:
No dissipation of fatigue
Inadequate load/recovery balance
What are the causes of transient, acute and chronic fatigue?
Transient:
Acidosis, Substrate depletion, dehydration
Acute:
Micro-traumas from eccentric, blunt from tackles
Chronic:
Excessive training, external factors
What are some ways to reduce this fatigue?
Ice baths, nutrition, antioxidants
Not being fatigued limits adaptations that take place
What is the super-compensation theory?
Requires fatigue to super-compensate and adapt
Reduce performance to be able to improve it
Fatigue dissipates when performance increases
What is the difference between false +ve’s and false -ve’s?
False +ve = Yes to fatigue but don’t train when could
False -ve = good to train, train but get injured
What were the four factors of fatigue and recovery in rugby union players?
1) Upper Body Neuromuscular Function:
Reduced outcome production post and 24 hours
2) Lower Body Neuromuscular Function:
Fatigued after 24 and 48 hours
3) Muscle Damage:
Creatine Kinase increases post and 24 hours
4) Wellbeing:
Doesn’t recover after 72 hours properly
What is creatine kinase and what is its effect on muscle damage?
Used as a marker to measure for muscle damage
Increased CK = Increased muscle damage
Compression clothes are a false marker of recovery
What is the difference between rugby players on the 4 factors of fatigue?
Forwards have lower body neuromuscular damage compared to backs
Similar for upper body
Forwards showed increase amounts of muscle damage
What is the difference between academy and school rugby players?
Academies cover more relative distance and high speed running in games
What is the difference between the same performer when elite and sub-elite on fatigue?
Relative distance and player load similar at both levels
RPE increases at elite due to harder opposition
Increased fatigue and upper body soreness in elite
What was the differences found between teams doing contact or non-contact training on fatigue state?
Contact:
Greater reduction in recovery perception, upper body function and muscle damage
Non-Contact:
Greater reduction in lower body due to easier sessions and more running
What was the differences found between resistance training exercises?
(Traditional vs Super Sets vs Trial Tests)
Clustering exercises = increase training density = increase fatigue response
CMJ often used as a marker of fatigue
Fatigue testing mustn’t add any more fatigue
What is the difference between jumping training and cycling training?
No eccentric actions during cycling
Jumps = fatigue on each one
What is the between-day variability of tests?
What is the between-day variability of creatine kinase collection/analysis?
5% difference
50% difference if taken on 2 separate days
Any small muscle damage = 200% increase
