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2013 | 38 | 73-82
Tytuł artykułu

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

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
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 J.kg-1.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.
EN
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 J.kg-1·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.
Wydawca

Rocznik
Tom
38
Strony
73-82
Opis fizyczny
Daty
wydano
2013-09-01
online
2013-10-08
Twórcy
  • Midwest State University of Paraná, LABIER, Guarapuava, Brazil, mtartaruga@hotmail.com
  • 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
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_hukin-2013-0047
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