exercise capacity Flashcards
what is a cardiopulmonary exercise test
uses a treadmill or cycle ergometer
intensity is incremental
untertaken under close clinical supervision in controlled environment
ecg,ventilation o2 and co2 routinely measured
outputs of a cardiopulmonary test
lots of data!
peak vo2 usually the primary outcome
ecg changes monitored throughout.
advantages of cardiopulmonary exercise test
quantifies performance in relation to metabolism
precise and reproducible
continuous monitoring for safety
disadvantages of cardiopulmonary test
required skilled technical support
very expensive
needs dedicated space
what is the 6 min walk test
uses a 20-30m flat course
objective is to cover greatest distance as possible in 6 mins
externally times by assessor
sub maximal test
what are the outputs of the 6 min walk test
primary outcome is total distance walked
secondary variables - perceived exertion scales, hr and pulse oximetry
what are the advantages of 6 min walk test
patient driven pace
cheap to deploy
validated in many clinical settings
disadvantages of 6 min walk test
requires significant unobstructed course, often undertaken in public hospt
what is an incremental shuttle walk test
uses a 10m circuit
externally paced by audio - like bleep test
each minute has one extra length than previous
what are the outputs in an incremental shuttle walk test
total distance walked before volitional end
secondary variables - ‘perceived exertion’ scales, hr and pulse oximetry
what are the advantages of incremental shuttle walk test
cheap to deploy
validated in many clinical populations
external pacing helps some to achieve maximum levels
disadvantages of incremental shuttle test
requires an unobstructed course, often untetaken in public hosp corridor
for some - incremental nature is difficult
ceiling effect of 1020m
patients can be penalised for poor peace management
