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Sports 2019, 7(1), 26; https://doi.org/10.3390/sports7010026

Do Obese Children Achieve Maximal Heart Rate during Treadmill Running?

1
Department of Public Health, Sport and Nutrition, Faculty of Health and Sport Sciences, University of Agder, P.O. Box 422, NO-4604 Kristiansand, Norway
2
Department of Sports Medicine, Norwegian School of Sport Sciences, 0806 Oslo, Norway
3
Department of Pulmonary Medicine, Oslo University Hospital, 0424 Oslo, Norway
4
Department of Paediatrics, Oslo University Hospital, 0424 Oslo, Norway
*
Author to whom correspondence should be addressed.
Received: 30 October 2018 / Revised: 5 January 2019 / Accepted: 17 January 2019 / Published: 19 January 2019
(This article belongs to the Special Issue Physical Activity in Adolescents)
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Abstract

Objective: Maximal heart rate (HR) is commonly defined as the highest HR obtained during a progressive exercise test to exhaustion. Maximal HR is considered one of the criteria to assess maximum exertion in exercise tests, and is broadly used when prescribing exercise intensity. The aim of the present study was to compare peak HR measurements during maximal treadmill running and active play in obese children and adolescents. Design: Comparison of peak heart rate during active play vs. maximal treadmill running in 39 (7–17 years old, 18 males) obese children and adolescents. Methods: Heart rate was recorded during intensive active play sessions, as well as during a progressive running test on a treadmill until exhaustion. HR, respiratory exchange ratio (RER), and oxygen uptake were continuously measured during the test. The criteria for having reached maximal effort was a subjective assessment by the technician that the participants had reached his or her maximal effort, and a RER above 1.00 or reporting perceived exertion (RPE) above 17 using the Borg-RPE6–20-Scale. Results: Thirty-four children had a RER ≥1.00, and 37 reported a RPE ≥ 17. Thirty-two children fulfilled both criteria. During active play, peak HR was significantly (p < 0.0001) increased (4%) (mean and 95% confidence intervals; 204 (201, 207) beats/min), compared to during maximal treadmill running (196 (194, 199) beats/min), respectively. Conclusion: The results of the present study indicate that peak heart rate measurements during progressive running to exhaustion in obese children and adolescents cannot necessarily be determined as maximal heart rate. View Full-Text
Keywords: play; exercise; fitness; physical activity; exercise testing play; exercise; fitness; physical activity; exercise testing
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Berntsen, S.; Edvardsen, E.; Gerbi, S.; Kolsgaard, M.L.; Anderssen, S.A. Do Obese Children Achieve Maximal Heart Rate during Treadmill Running? Sports 2019, 7, 26.

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