Testing the validity of three submaximal ergometer tests for estimating maximal aerobic capacity in children.
OBJECTIVE
Aerobic capacity in children has been linked to health-related outcomes, but the validity of existing assessment methods is largely unknown. This study evaluated the validity of the Åstrand-Rhyming, Woynarowska and Olgun Binyildiz methods.


METHODS
Aerobic capacity was estimated from the heart rate response to submaximal ergometer cycling in 62 children aged 11-12 years. Direct measurement of peak oxygen consumption during a graded maximal treadmill test was used as the criterion method.


RESULTS
We found low mean bias for age-adjusted Åstrand-Rhyming data and Woynarowska data, (-14 and 23 mL/min, respectively), low correlation to criterion values (0.81 and 0.74, respectively) and high standard error of estimate (SEE) (340 and 395 mL/min). The Olgun Binyildiz method gave high correlation (0.87) and low SEE (298 mL/min), but large bias (-660 mL/min). All methods underestimated capacity in well-trained children.


CONCLUSIONS
The Olgun Binyildiz method is recommended for following an individual over time, due to its low random error. But for comparing individual data with those obtained using direct measurements, the Woynarowska or Åstrand-Rhyming method may be the first choice. However, they all underestimated aerobic capacity in well-trained children.
Åstrand Laboratory of Work Physiology, The Swedish School of Sports and Health Sciences (GIH), Stockholm, Sweden.
Örjan
Ö
Ekblom
D002648:Child; D005080:Exercise Test; D017079:Exercise Tolerance; D005260:Female; D006801:Humans; D008297:Male; D010101:Oxygen Consumption; D010809:Physical Fitness
Aerobic fitness; Children; Ergometer; Validity