Cardiovascular medicine
Relation between duration and intensity of first exercise and
"warm up" in ischaemic heart disease
P Kaya, J Kittelsonb, R A H Stewarta
a Department of
Medicine, University of Otago, Dunedin, New Zealand, b Department of Preventive
and Social Medicine, University of Otago
Correspondence to: Dr Ralph A H Stewart, Cardiovascular Research Unit, Green Lane Hospital, Auckland 1003, New Zealand email: rstewart{at}ahsl.co.nz
Accepted 21 July 1999
OBJECTIVE
To determine the importance of the
duration and intensity of "warm up" exercise for reducing ischaemia
during second exercise in patients with exertional angina.
DESIGNRandomised crossover comparison of three warm up
exercise protocols.
PATIENTS18 subjects with stable ischaemic heart disease
and > 0.1 mV ST segment depression on treadmill exercise testing.
INTERVENTIONSThe warm up protocols were 20 minutes of
slow exercise at 2.7 km/h, symptom limited graded exercise for a mean
of 7.4 (range 5.0 to 10.5) minutes, and three minutes of symptom
limited fast exercise of similar maximum intensity.
MAIN OUTCOME MEASURESST segment depression during graded
treadmill exercise undertaken 10 minutes after each warm up protocol or
no warm up exercise.
RESULTSCompared with exercise with no warm up, the
duration of graded exercise after earlier slow warm up increased by
4.9% (95% confidence interval (CI), 
3.3% to 13.7%), after graded
warm up by 10.3% (95% CI, 5.6% to 15.2%), and after fast warm up by
16% (95% CI, 6.2% to 26.7%). ST segment depression at equivalent
submaximal exercise decreased after slow warm up by 27% (95% CI, 5%
to 44%), after graded warm up by 31% (95% CI, 17% to 44%), and
after fast warm up by 47% (95% CI, 27% to 61%). Compared with slow
warm up exercise, the more intense graded and fast warm up protocols
significantly increased the duration of second exercise (p = 0.0072)
and reduced both peak ST depression (p = 0.0026) and the rate of
increase of ST depression (p = 0.0069).
CONCLUSIONSIn patients with exertional angina the size
of the warm up response is related to the maximum intensity rather than
the duration of first exercise.
Keywords: exercise; angina; warm up; preconditioning
© 2000 by Heart
CiteULike 
Complore 
Connotea 
Del.icio.us 
Digg 
Reddit 
Technorati What's this?
This article has been cited by other articles:
-
Bogaty, P., Poirier, P., Boyer, L., Jobin, J., Dagenais, G. R.
(2003). What Induces the Warm-Up Ischemia/Angina Phenomenon: Exercise or Myocardial Ischemia?. Circulation
107: 1858-1863
[Abstract] [Full Text]
- Full Text
- Full Text (PDF)
- Submit a response
- Alert me when this article is cited
- Alert me when eLetters are posted
- Alert me if a correction is posted
- Citation Map
Services
- Email this link to a friend
- Similar articles in this journal
- Similar articles in PubMed
- Add article to my folders
- Download to citation manager
- Request Permissions
Citing Articles
Google Scholar
PubMed
Topic Collections
Bookmark with
Register for free content
The full back archive is now available for all BMJ Journals. Institutional subscribers may access the entire archive as part of their subscription. Personal subscribers will also have access to all content when logged in. Non-subscribers who register have free access to all articles published before 2006 right back to volume 1 issue 1. Register here to access the free archive of all BMJ Journals.
Don't forget to sign up for content alerts so you keep up to date with all the articles as they are published.
