Gender Affects On Pediatric Heart Rate And Vo2 Relationships Compared To The ACSM Predicted Values: 2158: Board #46 May 28 3:30 PM - 5:00 PM : Medicine & Science in Sports & Exercise

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D-27 Free Communication/Poster - Diagnostic Testing: MAY 28, 2009 1: 00 PM - 6: 00 PM ROOM: Hall 4F

Gender Affects On Pediatric Heart Rate And Vo2 Relationships Compared To The ACSM Predicted Values


Board #46 May 28 3:30 PM - 5:00 PM

Mays, Wayne A.; Gerdes, Yvette M.; Knecht, Sandra K.; Knilans, Timothy K.

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Medicine & Science in Sports & Exercise: May 2009 - Volume 41 - Issue 5 - p 251-252
doi: 10.1249/
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PURPOSE: To evaluate the gender affect on the percent of maximal heart rate (%Max HR) and oxygen consumption relationship in pediatric patients compared to the established adult values by the American College of Sports Medicine.

METHODS: 1087 patients (Male 548, Female 539) referred for evaluation of chest pain, syncope and exercise intolerance were evaluated by a maximal exercise test using the James cycle ergometer protocol. The patients were cleared of structural heart disease by echocardiograph and/or physical examination and history. All exercise tests were maximal efforts. Patient demographics for the males and females were: Age 14.1±3.1 vs 14.8±3.3 years, Height 1.64±0.17 vs 1.60±0.11 meters and Weight 61.2±21.3 vs 56.7±14.5 kg, respectively.

RESULTS: The observed exercise values for %MaxHR for both male and female were significantly higher than the ACSM predicted values at 40%, 50%, 60%, 80% and 85% Max VO2 levels. Additionally, the %MaxHR was significantly higher in females compared to males. Heart rate for females was significantly higher than males at all stages except 80%MaxVO2.


CONCLUSION: The observed values for %MaxHR are significantly higher in pediatrics compared to the predicted values by the ACSM. Additionally, %MaxHR and HR was significantly higher in females. When developing an exercise prescription for pediatric patients, values must be based on pediatric standards divided into gender strata.

© 2009 American College of Sports Medicine