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Predictor Variables for Marathon Race Time in Recreational Female Runners

AUTHORS

Wiebke Schmid 1 , Beat Knechtle 2 , * , Patrizia Knechtle 1 , Ursula Barandun 1 , Christoph Alexander Rst 2 , Thomas Rosemann 2 , Romuald Lepers 3

1 Gesundheitszentrum St. Gallen, St. Gallen, Switzerland

2 Institute of General Practice and Health Services Research, University of Zurich, Zurich, Switzerland

3 INSERM U887, University of Undy, Faculty of Sport Sciences, Dijon, France

How to Cite: Schmid W, Knechtle B, Knechtle P, Barandun U, Rst C A, et al. Predictor Variables for Marathon Race Time in Recreational Female Runners, Asian J Sports Med. Online ahead of Print ; 3(2):34704. doi: 10.5812/asjsm.34704.

ARTICLE INFORMATION

Asian Journal of Sports Medicine: 3 (2); 90-98
Published Online: May 31, 2012
Article Type: Research Article
Received: October 31, 2011
Accepted: December 28, 2011
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Abstract

Purpose: We intended to determine predictor variables of anthropometry and training for marathon race time in recreational female runners in order to predict marathon race time for future novice female runners.

Methods: Anthropometric characteristics such as body mass, body height, body mass index, circumferences of limbs, thicknesses of skin-folds and body fat as well as training variables such as volume and speed in running training were related to marathon race time using bi- and multi-variate analysis in 29 female runners.

Results: The marathoners completed the marathon distance within 251 (26) min, running at a speed of 10.2 (1.1) km/h. Body mass (r=0.37), body mass index (r=0.46), the circumferences of thigh (r=0.51) and calf (r=0.41), the skin-fold thicknesses of front thigh (r=0.38) and of medial calf (r=0.40), the sum of eight skin-folds (r=0.44) and body fat percentage (r=0.41) were related to marathon race time. For the variables of training, maximal distance ran per week (r=? 0.38), number of running training sessions per week (r=? 0.46) and the speed of the training sessions (r= ? 0.60) were related to marathon race time. In the multi-variate analysis, the circumference of calf (P=0.02) and the speed of the training sessions (P=0.0014) were related to marathon race time. Marathon race time might be partially (r 2=0.50) predicted by the following equation: Race time (min)=184.4 + 5.0 x (circumference calf, cm) 11.9 x (speed in running during training, km/h) for recreational female marathoners.

Conclusions: Variables of both anthropometry and training were related to marathon race time in recreational female marathoners and cannot be reduced to one single predictor variable. For practical applications, a low circumference of calf and a high running speed in training are associated with a fast marathon race time in recreational female runners.

Keywords

Body Fat Skin-fold Training Limb Circumference Gender Marathon

© 2012, Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

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