Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2010) 09, 31 - 35

Research article
Relationship Between Training Status and Maximal Fat Oxidation Rate
Adriano E. Lima-Silva1,2, , Romulo C. M. Bertuzzi2, Flavio O. Pires2, Joao F. L. Gagliardi2, Ronaldo V. Barros2, John Hammond3, Maria A. P. D. M. Kiss2
Author Information
1 Federal University of Alagoas, Brazil
2 School of Physical Education and Sport, São Paulo University, Brazil
3 Coaching and Exercise Science, University of Lincoln, UK

Adriano E. Lima-Silva
✉ Centro de Educação – Universidade Federal de Alagoas, Avenida Lourival Melo Mota S/N – Campus A.C. Simões, Brazil
Email: adrianosilva@usp.br
Publish Date
Received: 25-06-2009
Accepted: 25-11-2009
Published (online): 01-03-2010
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ABSTRACT

This study aimed to compare maximal fat oxidation rate parameters between moderate- and low-performance runners. Eighteen runners performed an incremental treadmill test to estimate individual maximal fat oxidation rate (Fatmax) based on gases measures and a 10,000-m run on a track. The subjects were then divided into a low and moderate performance group using two different criteria: 10,000-m time and VO2max values. When groups were divided using 10,000-m time, there was no significant difference in Fatmax (0.41 ± 0.16 and 0.27 ± 0.12 g.min-1, p = 0.07) or in the exercise intensity that elicited Fatmax (59.9 ± 16.5 and 68.7 ± 10.3 % O2max, p = 0.23) between the moderate and low performance groups, respectively (p > 0.05). When groups were divided using VO2max values, Fatmax was significantly lower in the low VO2max group than in the high VO2max group (0. 29 ± 0.10 and 0.47 ± 0.17 g.min-1, respectively, p < 0.05) but the intensity that elicited Fatmax did not differ between groups (64.4 ± 14.9 and 61.6 ± 15.4 %VO2max). Fatmax or %VO2max that elicited Fatmax was not associated with 10,000 m time. The only variable associated with 10,000-m running performance was %VO2max used during the run (p < 0.01). In conclusion, the criteria used for the division of groups according to training status might influence the identification of differences in Fatmax or in the intensity that elicits Fatmax.

Key words: fat oxidation, running performance, indirect calorimetry


           Key Points
  • The results of the present study suggest that the criteria used to categorize aerobic training status of subjects can influence the magnitude of differences in Fat.
  • The Fat is similar between groups with similar 10,000-m running performance.
  • The 10,000-m running performance seems to be associated with an increased ability to oxidize carbohydrate.
 
 
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