International Journal of Physical Medicine & Rehabilitation
Open Access
ISSN: 2329-9096
ISSN: 2329-9096
Michel White
Montreal Heart Institute,
5000 Belanger Street, Montreal, Quebec H1T 1C8
Canada
Research Article
Characterization and Functional Implications of Heart Rate Increase and Heart Rate Recovery on Maximal and Submaximal Exercise Capacity in Patients with Advanced Heart Failure
Author(s): Michel White, Jonathan Myers, Marie-Claude Guertin, Annik Fortier, Anique Ducharme, François Harel, Eileen O'Meara, Geneviève Gravel and Bernard ThibaultMichel White, Jonathan Myers, Marie-Claude Guertin, Annik Fortier, Anique Ducharme, François Harel, Eileen O'Meara, Geneviève Gravel and Bernard Thibault
Objective: Heart rate increase early after the initiation of exercise has not been characterized nor related to exercise capacity, heart rate recovery, and gas exchange analyses in patients with advanced heart failure. One hundred and forty-one patients including 121 patients randomized in the GREATER-EARTH trial were investigated.
Methods: Exercise capacity was assessed using a treadmill ramp exercise protocol with gas exchange analyses, a fix-load endurance exercise protocol, and a 6-minute walk test. Heart rate increase was computed at 1-, 2- minutes, and 1/3 of exercise time while heart rate recovery was measured at 1- and 2-minutes following maximal exercise.
Results: Heart rate increase early after the initiation of exercise test was not related to exercise capacity. In contrast, heart rate recovery was significantly related to maximal and submaxima.. View More»
DOI:
10.4172/2329-9096.1000240