- Title
- Maximal rate of increase in heart rate during the rest-exercise transition tracks reductions in exercise performance when training load is increased
- Creator
- Nelson, Maximillian J.; Thomson, Rebecca L.; Rogers, Daniel K.; Howe, Peter R. C.; Buckley, Jonathan D.
- Relation
- Journal of Science and Medicine in Sport Vol. 17, Issue 1, p. 129-133
- Publisher Link
- http://dx.doi.org/10.1016/j.jsams.2013.02.016
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2014
- Description
- Objectives: Heart rate kinetics are faster in well-trained athletes at exercise onset, indicating sensitivity to training status, but whether they track performance changes due to changes in training load is unknown. Design: Randomised, counterbalanced, cross-over. Methods: 17 cyclists completed two weeks of light and two weeks of heavy training. The day after each training period heart rate was recorded during 5 min cycling at 100 W to determine the maximal rate of heart rate increase. Participants then performed a 5 min cycle time-trial after which heart rate recovery was determined. Results: Work during 5 min cycle time-trial decreased 3.5% (P < 0.04) in participants (n = 8) who increased training load (completed light training then heavy training) and, although maximal rate of heart rate increase did not change (P = 0.27), within-individual changes in work were correlated with changes in maximal rate of heart rate increase (r = 0.87, P = 0.005). Work during 5 min cycle time-trial increased 6.5% (P < 0.001) in 9 participants who decreased training load (completed heavy training then light training) and maximal rate of heart rate increase increased 28% (P = 0.002) but the changes in maximal work were not related to changes in rate of heart rate increase (r = 0.32, P = 0.40). Heart rate recovery tended to track changes in 5 min cycle time-trial work following increases and decreases in training load (r = 0.65–0.75, P = 0.03–0.08). Conclusions: Maximal rate of heart rate increases during cycling at 100 W tracks reductions in exercise performance when training load is increased, but not performance improvements when training loads are reduced. Maximal rate of heart rate increase may be a useful adjunct to heart rate recovery for tracking changes in exercise performance.
- Subject
- cardiac autonomic function; heart rate recovery; exercise performance; training load; fatigue
- Identifier
- http://hdl.handle.net/1959.13/1307497
- Identifier
- uon:21444
- Identifier
- ISSN:1440-2440
- Language
- eng
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