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2013 | 38 | 73-82
Article title

Mechanical Work and Long-Distance Performance Prediction: the Influence of Allometric Scaling

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The purpose of this study was to examine the effect of allometric scaling on the relationship between mechanical work and long-distance running performance in recreational runners. Fourteen recreational long-distance runners (male, mean ± SD - age: 29 ± 7 years; body mass: 70.0 ± 10.2 kg; body height: 1.71 ± 0.07 m; maximal oxygen uptake: VO2max 52.0 ± 4.9 ml·kg-1·min-1) performed two tests: a continuous incremental test to volitional exhaustion in order to determine VO2max, and a 6-minute running submaximal test at 3.1 m·s-1, during which segments in the sagittal plane were recorded using a digital camera and the internal (Wint), external (Wext) and total (Wtot) mechanic work, in·m-1, was subsequently calculated. The results indicated a significant correlation between mechanical work and performance, however, the strongest correlations were observed when allometric exponents were used (respectively for Wint, Wext and Wtot; non allometric vs. allometric scaling defined by literature (0.75) or determined mathematically (0.49): r = 0.38 vs. r = 0.44 and r = 0.50; r = 0.80 vs. r = 0.83 and r = 0.82; r = 0.70 vs. r = 0.77 and r = 0.78). These results indicate that mechanical work could be used as a predictor of recreational long-distance performance and an allometric model may improve this prediction.
Physical description
1 - 09 - 2013
08 - 10 - 2013
  • Midwest State University of Paraná, LABIER, Guarapuava, Brazil
  • Federal University of Rio Grande do Sul, LAPEX, Porto Alegre, Brazil
  • University of Nice Sophia Antipolis, LAMHESS, Nice, France
  • University of Nice Sophia Antipolis, LAMHESS, Nice, France
  • Federal University of Rio Grande do Sul, LAPEX, Porto Alegre, Brazil
  • Federal University of Santa Maria, Laboratory of Biomechanics, Santa Maria, Brazil
  • Federal University of Rio Grande do Sul, LAPEX, Porto Alegre, Brazil
  • Federal University of Pelotas, School of Physical Education, Pelotas, Brazil
  • Federal University of Rio Grande do Sul, LAPEX, Porto Alegre, Brazil
  • Federal University of Rio Grande do Sul, LAPEX, Porto Alegre, Brazil
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