Assessing exercise intensity in cardiac rehabilitation: the use of a Polar heart rate monitor

2008 ◽  
Vol 3 (11) ◽  
pp. 534-538 ◽  
Author(s):  
Hugh Bethell ◽  
Sandra Letford ◽  
Julia Evans ◽  
Sally Turner ◽  
Joe Maskell ◽  
...  
Keyword(s):  
Heart Rate ◽  
Cardiac Rehabilitation ◽  
Exercise Intensity ◽  
Heart Rate Monitor

Insufficient control of exercise intensity by heart rate monitoring in cardiac patients

2011 ◽  
Vol 19 (3) ◽  
pp. 436-443 ◽  
Author(s):  
Falko Frese ◽  
Philipp Seipp ◽  
Susanne Hupfer ◽  
Peter Bärtsch ◽  
Birgit Friedmann-Bette
Keyword(s):  
Heart Rate ◽  
Cardiac Rehabilitation ◽  
Exercise Intensity ◽  
Cardiac Patients ◽  
Treadmill Test ◽  
Exercise Tests ◽  
Self Monitoring ◽  
Volitional Exhaustion ◽  
Pulse Palpation ◽  
Treadmill Testing

Objectives: To test the reliability of heart rate (HR) recommendations for cardiac rehabilitation training obtained from different treadmill tests. Background: For training in cardiac rehabilitation, HR recommendations are derived from cardio-pulmonary tests. Exercise intensity is often controlled through self-monitoring HR by the cardiac patients. Design: Non-randomized clinical trial. Methods: 25 patients of a cardiac sports group (six women, 19 men, age 68.3 ± 5 years, height 171 ± 10 cm, weight 82 ± 12.8 kg) performed a stepwise increasing treadmill test according to a modified Stanford protocol (S) and a ramp treadmill test according to the Balke–Ware protocol (B) until volitional exhaustion. In 16 patients, HR was assessed with a HR monitor and compared with HR obtained by self-monitoring through pulse palpation during three training sessions. Results: Similar peak cardiopulmonary responses were obtained with the two exercise protocols of significantly ( p < 0.001) different duration (S 22:05 ± 7:11 min, B 13:31 ± 4:20 min). During the training sessions, HR exceeded the upper HR limit set at 85% HRpeak in 15 patients and in nine patients, higher HRpeak than in the exercise tests was observed. Five participants did not accurately measure their HR by pulse palpation. Conclusions: All but one patient of the cardiac sports group did not adhere to the HR recommendations derived from incremental treadmill testing, most likely because volitional exhaustion occurred in both treadmill tests before maximal cardiopulmonary responses were reached. In about 30% of the patients, training intensity could not be controlled by self-monitoring because of inaccurate pulse palpation.

scholarly journals Does exercise prescription based on estimated heart rate training zones exceed the ventilatory anaerobic threshold in patients with coronary heart disease undergoing usual-care cardiovascular rehabilitation? A United Kingdom perspective

2019 ◽  
Vol 27 (6) ◽  
pp. 579-589 ◽  
Author(s):  
Sean Pymer ◽  
Simon Nichols ◽  
Jonathon Prosser ◽  
Stefan Birkett ◽  
Sean Carroll ◽  
...  
Keyword(s):  
Heart Rate ◽  
United Kingdom ◽  
Cardiac Rehabilitation ◽  
Usual Care ◽  
Cardiorespiratory Fitness ◽  
Exercise Intensity ◽  
Exercise Prescription ◽  
Cycle Ergometer ◽  
Ventilatory Anaerobic Threshold ◽  
The Uk

Background In the United Kingdom (UK), exercise intensity is prescribed from a fixed percentage range (% heart rate reserve (%HRR)) in cardiac rehabilitation programmes. We aimed to determine the accuracy of this approach by comparing it with an objective, threshold-based approach incorporating the accurate determination of ventilatory anaerobic threshold (VAT). We also aimed to investigate the role of baseline cardiorespiratory fitness status and exercise testing mode dependency (cycle vs. treadmill ergometer) on these relationships. Design and methods A maximal cardiopulmonary exercise test was conducted on a cycle ergometer or a treadmill before and following usual-care circuit training from two separate cardiac rehabilitation programmes from a single region in the UK. The heart rate corresponding to VAT was compared with current heart rate-based exercise prescription guidelines. Results We included 112 referred patients (61 years (59–63); body mass index 29 kg·m–2 (29–30); 88% male). There was a significant but relatively weak correlation ( r = 0.32; p = 0.001) between measured and predicted %HRR, and values were significantly different from each other ( p = 0.005). Within this cohort, we found that 55% of patients had their VAT identified outside of the 40–70% predicted HRR exercise training zone. In the majority of participants (45%), the VAT occurred at an exercise intensity <40% HRR. Moreover, 57% of patients with low levels of cardiorespiratory fitness achieved VAT at <40% HRR, whereas 30% of patients with higher fitness achieved their VAT at >70% HRR. VAT was significantly higher on the treadmill than the cycle ergometer ( p < 0.001). Conclusion In the UK, current guidelines for prescribing exercise intensity are based on a fixed percentage range. Our findings indicate that this approach may be inaccurate in a large proportion of patients undertaking cardiac rehabilitation.

Validation of a widely used heart rate monitor to track steps in older adults

2019 ◽  
Vol 59 (10) ◽  
Author(s):  
Stefanie Rüdiger ◽  
Tim Stuckenschneider ◽  
Vera Abeln ◽  
Christopher D. Askew ◽  
Petra Wollseiffen ◽  
...  
Keyword(s):  
Older Adults ◽  
Heart Rate ◽  
Heart Rate Monitor

scholarly journals Exercise Intensity during Olympic-Distance Triathlon in Well-Trained Age-Group Athletes: An Observational Study

Sports ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 18
Author(s):  
Atsushi Aoyagi ◽  
Keisuke Ishikura ◽  
Yoshiharu Nabekura
Keyword(s):  
Heart Rate ◽  
Observational Study ◽  
Exercise Intensity ◽  
Time Range ◽  
Age Group ◽  
Slow Group ◽  
H 41 ◽  
The Mean ◽  
Aerobic And Anaerobic ◽  
Very High

The aim of this study was to examine the exercise intensity during the swimming, cycling, and running legs of nondraft legal, Olympic-distance triathlons in well-trained, age-group triathletes. Seventeen male triathletes completed incremental swimming, cycling, and running tests to exhaustion. Heart rate (HR) and workload corresponding to aerobic and anaerobic thresholds, maximal workloads, and maximal HR (HRmax) in each exercise mode were analyzed. HR and workload were monitored throughout the race. The intensity distributions in three HR zones for each discipline and five workload zones in cycling and running were quantified. The subjects were then assigned to a fast or slow group based on the total race time (range, 2 h 07 min–2 h 41 min). The mean percentages of HRmax in the swimming, cycling, and running legs were 89.8% ± 3.7%, 91.1% ± 4.4%, and 90.7% ± 5.1%, respectively, for all participants. The mean percentage of HRmax and intensity distributions during the swimming and cycling legs were similar between groups. In the running leg, the faster group spent relatively more time above HR at anaerobic threshold (AnT) and between workload at AnT and maximal workload. In conclusion, well-trained male triathletes performed at very high intensity throughout a nondraft legal, Olympic-distance triathlon race, and sustaining higher intensity during running might play a role in the success of these athletes.

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