Pattern of the heart rate performance curve in maximal graded treadmill running from 1100 healthy 18–65 Years old men and women: the 4HAIE study
Introduction: The heart rate performance curve (HRPC) in maximal incremental cycle ergometer exercise demonstrated three different patterns such as downward, linear or inverse versions. The downward pattern was found to be the most common and therefore termed regular. These patterns were shown to di...
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Frontiers Media S.A.
2023-05-01
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| Series: | Frontiers in Physiology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphys.2023.1178913/full |
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| author | Philipp Birnbaumer Tomas Dostal Lukas Cipryan Peter Hofmann |
| author_facet | Philipp Birnbaumer Tomas Dostal Lukas Cipryan Peter Hofmann |
| author_sort | Philipp Birnbaumer |
| collection | DOAJ |
| description | Introduction: The heart rate performance curve (HRPC) in maximal incremental cycle ergometer exercise demonstrated three different patterns such as downward, linear or inverse versions. The downward pattern was found to be the most common and therefore termed regular. These patterns were shown to differently influence exercise prescription, but no data are available for running. This study investigated the deflection of the HRPC in maximal graded treadmill tests (GXT) of the 4HAIE study.Methods: Additional to maximal values, the first and second ventilatory thresholds as well as the degree and the direction of the HRPC deflection (kHR) were determined from 1,100 individuals (489 women) GXTs. HRPC deflection was categorized as downward (kHR < −0.1), linear (−0.1 ≤ kHR ≤ 0.1) or inverse (kHR > 0.1) curves. Four (even split) age- and two (median split) performance-groups were used to investigate the effects of age and performance on the distribution of regular (= downward deflection) and non-regular (= linear or inverse course) HR curves for male and female subjects.Results: Men (age: 36.8 ± 11.9 years, BMI: 25.0 ± 3.3 kg m−2, VO2max: 46.4 ± 9.4 mL min−1. kg−1) and women (age: 36.2 ± 11.9 years, BMI: 23.3 ± 3.7 kg m−2, VO2max: 37.4 ± 7.8 mL min−1. kg−1) presented 556/449 (91/92%) downward deflecting, 10/8 (2/2%) linear and 45/32 (7/6%) inverse HRPC´s. Chi-squared analysis revealed a significantly higher number of non-regular HRPC´s in the low-performance group and with increasing age. Binary logistic regression revealed that the odds ratio (OR) to show a non-regular HRPC is significantly affected by maximum performance (OR = 0.840, 95% CI = 0.754–0.936, p = 0.002) and age (OR = 1.042, 95% CI = 1.020–1.064, p < 0.001) but not sex.Discussion: As in cycle ergometer exercise, three different patterns for the HRPC were identified from the maximal graded treadmill exercise with the highest frequency of regular downward deflecting curves. Older subjects and subjects with a lower performance level had a higher probability to show a non-regular linear or inverted curve which needs to be considered for exercise prescription. |
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| last_indexed | 2024-03-13T08:22:37Z |
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| spelling | doaj.art-598bedfaca6649169af6f5c0d487e0ea2023-05-31T05:34:08ZengFrontiers Media S.A.Frontiers in Physiology1664-042X2023-05-011410.3389/fphys.2023.11789131178913Pattern of the heart rate performance curve in maximal graded treadmill running from 1100 healthy 18–65 Years old men and women: the 4HAIE studyPhilipp Birnbaumer0Tomas Dostal1Lukas Cipryan2Peter Hofmann3Exercise Physiology, Training and Training Therapy Research Group, Institute of Human Movement Science, Sport and Health, University of Graz, Graz, AustriaDepartment of Human Movement Studies & Human Motion Diagnostic Centre, The University of Ostrava, Ostrava, Czech RepublicDepartment of Human Movement Studies & Human Motion Diagnostic Centre, The University of Ostrava, Ostrava, Czech RepublicExercise Physiology, Training and Training Therapy Research Group, Institute of Human Movement Science, Sport and Health, University of Graz, Graz, AustriaIntroduction: The heart rate performance curve (HRPC) in maximal incremental cycle ergometer exercise demonstrated three different patterns such as downward, linear or inverse versions. The downward pattern was found to be the most common and therefore termed regular. These patterns were shown to differently influence exercise prescription, but no data are available for running. This study investigated the deflection of the HRPC in maximal graded treadmill tests (GXT) of the 4HAIE study.Methods: Additional to maximal values, the first and second ventilatory thresholds as well as the degree and the direction of the HRPC deflection (kHR) were determined from 1,100 individuals (489 women) GXTs. HRPC deflection was categorized as downward (kHR < −0.1), linear (−0.1 ≤ kHR ≤ 0.1) or inverse (kHR > 0.1) curves. Four (even split) age- and two (median split) performance-groups were used to investigate the effects of age and performance on the distribution of regular (= downward deflection) and non-regular (= linear or inverse course) HR curves for male and female subjects.Results: Men (age: 36.8 ± 11.9 years, BMI: 25.0 ± 3.3 kg m−2, VO2max: 46.4 ± 9.4 mL min−1. kg−1) and women (age: 36.2 ± 11.9 years, BMI: 23.3 ± 3.7 kg m−2, VO2max: 37.4 ± 7.8 mL min−1. kg−1) presented 556/449 (91/92%) downward deflecting, 10/8 (2/2%) linear and 45/32 (7/6%) inverse HRPC´s. Chi-squared analysis revealed a significantly higher number of non-regular HRPC´s in the low-performance group and with increasing age. Binary logistic regression revealed that the odds ratio (OR) to show a non-regular HRPC is significantly affected by maximum performance (OR = 0.840, 95% CI = 0.754–0.936, p = 0.002) and age (OR = 1.042, 95% CI = 1.020–1.064, p < 0.001) but not sex.Discussion: As in cycle ergometer exercise, three different patterns for the HRPC were identified from the maximal graded treadmill exercise with the highest frequency of regular downward deflecting curves. Older subjects and subjects with a lower performance level had a higher probability to show a non-regular linear or inverted curve which needs to be considered for exercise prescription.https://www.frontiersin.org/articles/10.3389/fphys.2023.1178913/fullexercise prescriptionexercise intensitythresholdsperformance diagnosticsheart rate turnpoint |
| spellingShingle | Philipp Birnbaumer Tomas Dostal Lukas Cipryan Peter Hofmann Pattern of the heart rate performance curve in maximal graded treadmill running from 1100 healthy 18–65 Years old men and women: the 4HAIE study Frontiers in Physiology exercise prescription exercise intensity thresholds performance diagnostics heart rate turnpoint |
| title | Pattern of the heart rate performance curve in maximal graded treadmill running from 1100 healthy 18–65 Years old men and women: the 4HAIE study |
| title_full | Pattern of the heart rate performance curve in maximal graded treadmill running from 1100 healthy 18–65 Years old men and women: the 4HAIE study |
| title_fullStr | Pattern of the heart rate performance curve in maximal graded treadmill running from 1100 healthy 18–65 Years old men and women: the 4HAIE study |
| title_full_unstemmed | Pattern of the heart rate performance curve in maximal graded treadmill running from 1100 healthy 18–65 Years old men and women: the 4HAIE study |
| title_short | Pattern of the heart rate performance curve in maximal graded treadmill running from 1100 healthy 18–65 Years old men and women: the 4HAIE study |
| title_sort | pattern of the heart rate performance curve in maximal graded treadmill running from 1100 healthy 18 65 years old men and women the 4haie study |
| topic | exercise prescription exercise intensity thresholds performance diagnostics heart rate turnpoint |
| url | https://www.frontiersin.org/articles/10.3389/fphys.2023.1178913/full |
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