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Czasopismo
2014 | 15 | 3 | 166-170
Tytuł artykułu

Estimating Maximal Heart Rate with the ‘220-Age’ Formula in Adolescent Female Volleyball Players: A Preliminary Study

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Purpose. Although maximal heart rate (HRmax) is used widely to assess exercise intensity in training, there are limited data with regards to the validity of age-based prediction equations of HRmax in volleyball players. Therefore, the aim of the present study was to compare the measured-HRmax of two prediction equations (Fox-HRmax = 220 − age and Tanaka-HRmax = 208 − 0.7 × age) in young female volleyball players. Methods. The study involved 47 volleyball players (age 13.39 ± 2.01 years, body mass 54.0 ± 10.8 kg, height 162.7 ± 10.2 cm) who performed a graded exercise field test (20 m shuttle run endurance test) to assess HRmax. Measured-HRmax values were compared with the Fox and Tanaka prediction equations. Results. The results showed that mean scores for HRmax significantly differed between measured and predicted values (p < 0.001, ŋ2 = 0.49). Post-hoc tests revealed that Fox-HRmax overestimated measured-HRmax (mean difference 5.7 bpm; 95% CI [3.0, 8.5]), whereas Tanaka-HRmax was similar to measured-HRmax (-2.2 bpm; 95% CI [-4.9, 0.4]). HRmax did not correlate with age (r = 0.16, p = 0.291). Conclusions. The results of this study failed to validate the widely used ‘220−age’ formula in volleyball players. Coaches and fitness trainers should take into account that the overestimation of HRmax by the Fox equation might lead to prescribing exercise at a higher intensity than what is targeted. Therefore, the Tanaka equation appears to offer a more accurate prediction equation of HRmax than the Fox equation in young female volleyball players.
Wydawca
Czasopismo
Rocznik
Tom
15
Numer
3
Strony
166-170
Opis fizyczny
Daty
wydano
2014-09-01
otrzymano
2014-08-10
zaakceptowano
2014-10-29
online
2015-02-06
Twórcy
  • Department of Physical and Cultural Education, Hellenic Army Academy, Athens, Greece , pademil@hotmail.com
  • Exercise Physiology Laboratory, Nikaia, Greece
  • University e-Campus, Novedrate, Italy
  • Tunisian Research Laboratory “Sports Performance Optimisation” National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia
  • Tunisian Research Laboratory “Sports Performance Optimisation” National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia
  • University of Jaen, Spain
autor
  • Faculty of Sport, University of Porto, Porto, Portugal
autor
  • Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_1515_humo-2015-0007
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