Support vector machines for aerobic fitness prediction of athletes

Authors:
Mustafa Acikkar;Mehmet Fatih Akay;Kerem Tuncay Ozgunen;Kadir Aydin;Sanli Sadi Kurdak
Affiliations:
Department of Physical Education and Sports, Cukurova University, Adana, Turkey;Department of Electrical and Electronics Engineering, Cukurova University, Adana, Turkey;Department of Physiology, Cukurova University, Adana, Turkey;Department of Mechanical Engineering, Cukurova University, Adana, Turkey;Department of Physiology, Cukurova University, Adana, Turkey
Venue:
Expert Systems with Applications: An International Journal
Year:
2009

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Abstract

Support vector machine is a statistical learning classifier, based on the principle of structural risk minimization, which performs well when applied to data outside the training set. This paper presents a new approach based on support vector machines to predict whether an athlete is aerobically fit or not. The input data set contains physical properties of athletes as well as their cardiopulmonary exercise testing results which were obtained at Cukurova University Sports Physiology Laboratory. According to the exercise test protocol, speed and grade of the treadmill were increased at certain times and the input variables of time, speed and grade of the treadmill, and oxygen uptake, carbon dioxide output, minute ventilation and heart rate of athletes were recorded. The average of the exercise test data was taken over certain time intervals and a curve fitting algorithm was applied to remove the spikes in the data and make it more suitable to use with support vector machines. Experiments with several different training and test data show that curve-fitted data has better performance measures, such as higher prediction rate, sensitivity, specificity, and shorter training time.