Rebecca L Thomson1, Clint R Bellenger2, Peter R C Howe3, Laura Karavirta4, Jonathan D Buckley2. 1. Alliance for Research in Exercise, Nutrition and Activity (ARENA), Sansom Institute for Health Research, University of South Australia, Australia. Electronic address: rebecca.thomson@unisa.edu.au. 2. Alliance for Research in Exercise, Nutrition and Activity (ARENA), Sansom Institute for Health Research, University of South Australia, Australia. 3. Clinical Nutrition Research Centre, University of Newcastle, Australia. 4. Polar Electro Oy, Finland.
Abstract
OBJECTIVES: The recovery of heart rate (HRR) after exercise is a potential indicator of fitness which has been shown to respond to changes in training. This study investigated the within-individual association between HRR and exercise performance following three different training loads. DESIGN: 11 male cyclists/triathletes were tested after two weeks of light training, two weeks of heavy training and two days of rest. METHODS: Exercise performance was measured using a 5-min maximal cycling time-trial. HRR was measured over 60s during supine recovery. RESULTS: Exercise performance decreased 2.2±2.5% following heavy training compared with post-light training (p=0.01), and then increased 4.0±4.2% following rest (p=0.004). Most HRR indices indicated a more rapid recovery of heart rate (HR) following heavy training, and reverted to post light training levels following two days of rest. HRR indices did not differ between post-light training and after the rest period (p>0.6). There were inverse within-subject relationships between indices of HRR and performance (r=-0.6, p≤0.004). Peak HR decreased 3.2±5.1bpm following heavy training (p=0.06) and significantly increased 4.9±4.3bpm following recovery (p=0.004). There was a moderate within-subject relationship between peak HR and exercise performance (r=0.7, p≤0.001). Controlling for peak HR reduced the relationships between HRR and performance (r=-0.4-0.5, p<0.05). CONCLUSIONS: This study demonstrated that HRR tracks short-term changes in exercise performance within-individuals, such that increases in HRR are associated with poorer exercise performance following heavy training. Peak HR can be compromised under conditions of fatigue, and needs to be taken into account in HRR analyses.
OBJECTIVES: The recovery of heart rate (HRR) after exercise is a potential indicator of fitness which has been shown to respond to changes in training. This study investigated the within-individual association between HRR and exercise performance following three different training loads. DESIGN: 11 male cyclists/triathletes were tested after two weeks of light training, two weeks of heavy training and two days of rest. METHODS: Exercise performance was measured using a 5-min maximal cycling time-trial. HRR was measured over 60s during supine recovery. RESULTS: Exercise performance decreased 2.2±2.5% following heavy training compared with post-light training (p=0.01), and then increased 4.0±4.2% following rest (p=0.004). Most HRR indices indicated a more rapid recovery of heart rate (HR) following heavy training, and reverted to post light training levels following two days of rest. HRR indices did not differ between post-light training and after the rest period (p>0.6). There were inverse within-subject relationships between indices of HRR and performance (r=-0.6, p≤0.004). Peak HR decreased 3.2±5.1bpm following heavy training (p=0.06) and significantly increased 4.9±4.3bpm following recovery (p=0.004). There was a moderate within-subject relationship between peak HR and exercise performance (r=0.7, p≤0.001). Controlling for peak HR reduced the relationships between HRR and performance (r=-0.4-0.5, p<0.05). CONCLUSIONS: This study demonstrated that HRR tracks short-term changes in exercise performance within-individuals, such that increases in HRR are associated with poorer exercise performance following heavy training. Peak HR can be compromised under conditions of fatigue, and needs to be taken into account in HRR analyses.
Authors: Clint R Bellenger; Joel T Fuller; Rebecca L Thomson; Kade Davison; Eileen Y Robertson; Jonathan D Buckley Journal: Sports Med Date: 2016-10 Impact factor: 11.136
Authors: Clint R Bellenger; Rebecca L Thomson; Eileen Y Robertson; Kade Davison; Maximillian J Nelson; Laura Karavirta; Jonathan D Buckley Journal: Eur J Appl Physiol Date: 2017-02-11 Impact factor: 3.078
Authors: Diego Warr-di Piero; Teresa Valverde-Esteve; Juan Carlos Redondo-Castán; Carlos Pablos-Abella; José Vicente Sánchez-Alarcos Díaz-Pintado Journal: PLoS One Date: 2018-07-16 Impact factor: 3.240