home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!sun-barr!ames!network.ucsd.edu!cogsci!crl!elman
- From: elman@crl.ucsd.edu (Jeff Elman)
- Newsgroups: rec.running
- Subject: Re: Irregular heartbeat, running and caffeine
- Keywords: irregular heartbeat
- Message-ID: <1552@cogsci.ucsd.EDU>
- Date: 28 Aug 92 04:08:53 GMT
- References: <2245@bigfoot.first.gmd.de> <1992Aug25.231448.14729@sifon.cc.mcgill.ca> <94731@bu.edu>
- Sender: news@cogsci.ucsd.EDU
- Organization: University of California, San Diego
- Lines: 21
-
- One common source of PVC's and PAC's is over-training, particularly in
- endurance sports. The heart normally expands with increased training.
- This is normal and appropriate. But if the stretching occurs too
- quickly, it can irritate parts of the heart. Most of the heart has
- pace-making capability which is normally suppressed; irritation can
- cause these other regions to trigger premature contractions. (These
- are often either masked or supressed during intense exercise, so you
- may only notice the problem at rest.) Eliminating caffeine, cutting
- back on the level of training, and re-building at a slower pace will
- frequently solve the problem.
-
- However, as several people have pointed out, there are many different
- things which can cause an irregular heartbeat. It can be chronic and
- totally benign in some people. In others it can be indicative of a
- serious problem. Get it checked, preferably by a cardiologist who's
- knowledgeable about sports medicine.
-
- Jeff Elman
- UCSD
-
-
-