Format

Send to

Choose Destination
Medicina (Kaunas). 2019 Nov 13;55(11). pii: E735. doi: 10.3390/medicina55110735.

Validity of Prediction Equations of Maximal Heart Rate in Physically Active Female Adolescents and the Role of Maturation.

Author information

1
Laboratory of Evaluation of Human Biological Performance, Department of Physical Education & Sport Science, Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece.
2
Department of Nutritional Sciences and Dietetics, International Hellenic University, 57400 Thessaloniki, Greece.
3
Department of Physical Education & Sport Science, Aristotle University of Thessaloniki, 62100 Serres, Greece.
4
Institute of Primary Care, University of Zurich, 8091 Zurich, Switzerland.
5
Exercise Physiology Laboratory, 18450 Nikaia, Greece.

Abstract

Background and objectives: Maximal heart rate (HRmax) is an important training and testing tool, especially in the context of evaluating intensity in exercise prescription; however, few studies have examined the validity of prediction equations of HRmax in physically active female adolescents and the role of maturation level. Therefore, the aim of the present study was to examine the differences between measured and predicted HRmax in a sample of physically active female adolescents. Materials and Methods: Seventy-one selected volleyball players (age 13.3 ± 0.7 years, body mass 62.0 ± 7.2 kg, height 1.72 ± 0.06 m) performed a 20 m shuttle run endurance test, and the actual HRmax was compared with Tanaka HRmax ('208 - 0.7 × age') and Fox HRmax ('220 - age'). Results: A large main effect of assessment method on HRmax was found (p < 0.001, η2 = 0.486) with Fox overestimating actual HRmax by 6.8 bpm (95% confidence intervals, CI; 4.2, 9.3) and Tanaka underestimating actual HRmax by -2.6 bpm (95% CI; -5.1, -0.1). The more matured participants had similar actual HRmax (mean difference -2.4 bpm; 95% CI; -6.5, 1.7; p = 0.242, d = -0.28), difference Fox - actual HRmax (1.5 bpm; 95% CI; -2.6, 5.6, p = 0.466, d = 0.17), and difference Tanaka - actual HRmax (1.7 bpm; 95% CI; -2.4, 5.8; p = 0.414, d = 0.19) to the less matured participants. Conclusions: These findings suggest that age-based prediction equations of HRmax developed in adult populations should be applied with caution in physically active female adolescents, and Tanaka should be preferred instead of the Fox equation.

KEYWORDS:

cardiac rate; exercise prescription; exercise testing; prediction equations; training zones; volleyball

Supplemental Content

Full text links

Icon for PubMed Central
Loading ...
Support Center