Perceived exertion Flashcards
what is perceived exertion
subjective intensity value of effort strain disco fort or fatigue during physical activity
what is perceived exertion used for
quantifying monitoring and regulating physical exertion
global model of perceived exertion components
respiratory - ventilation, o2 uptake, metabolic acidosis
psychological - anxiety, motivation
performance - audience, strategy, positioning
exertional - sweat, breathing, skin temp
what is RPE
Externalisation of physiological and psychological processes via the sensory afferent system
heart rate equation using RPE
hr = 10xRPE
borg CR10 ration scale
0-10
Borg 6-20 +ve
gold standard lab based testing
valid and reliable in adult populations
adaptations required to help children interpret scale
exercise modality
mode of exercise influences RPE eg revs on a bike or lower RPE for cycling after cycling training
what’s rpe influenced by
exercise modality
type
level of training
teleo-anticipation
implies effort perception may be a feedforward system where exercise intensity is refined based upon afferent feedback
application of RPE
predict max capacity
estimation - production for the prescription of exercise
predict time to exhaustion
longitudinal monitoring of training load
prediction of max capacity
submax linear workload - RPE relationship can be extrapolated to provide predictions of max capacity when max testing isn’t appropriate
familiarisation
better correlation for VO2 max and Hr with practice (3 trials)
estimation - production trials
exercise intensity at an RPE elicited during an exercise task of a fixed intensity and puts self regulate intensity to produce require intensity via adjusting speed, gradient or resistance
issue with estimation - production trials for prescription of exercise
evidence is insufficient to support using these methods as a primary method of exercise prescription
estimating time to exhaustion
constant load exercise at 55-70% peak power output in hot or cold
longitudinal monitoring of load
exertion of session 0-10 eg 6
duration - minutes eg 60
session RPE eg 6x60=360
(RESISTANCE TRAINING MULTIPLY EXERTION with number of reps not time)
considerations
familiarisation improves accuracy when self regulating
larger inter-individual differences in ratings between individuals
audience effects when assessing RPE in group environment
teleo-anticipation process
efferent commands - muscle heart - afferent sensations - brains - interpretation against expected outcome - conscious perception of exertion
