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@inproceedings{1203324,
author = {Cacek, Jan and Kalina, Tomáš and Doležal, Martin},
address = {Alicante},
booktitle = {Special Issue; Supplementary Issue: 8th INSHS International Christmas Sport Scientific Conference, 5-7 December 2013},
doi = {http://dx.doi.org/10.14198/jhse.2014.9.Proc1.34},
keywords = {oxygen uptake; acute effect; plyometric; maximum power},
howpublished = {elektronická verze "online"},
language = {eng},
location = {Alicante},
pages = {467-473},
publisher = {University of Alicante},
title = {Strength training and changes in the dynamics of running economy},
year = {2014}
}
TY - JOUR
ID - 1203324
AU - Cacek, Jan - Kalina, Tomáš - Doležal, Martin
PY - 2014
TI - Strength training and changes in the dynamics of running economy
PB - University of Alicante
CY - Alicante
KW - oxygen uptake
KW - acute effect
KW - plyometric
KW - maximum power
N2 - The aim of this study was to examine an acute effect of 4RM training and plyometric training (PT) on running economy (RE; O2 consumption) in endurance runners during a 48 hour interval. Eight performance runners (age 25.4±1.4 years) completed a maximum strength training (4RM) of lower limbs (3 sets, rest 2 min, 5 exercises) and subsequently underwent a RE test on a treadmill (speed 8, 10 and 12 km·h-1) at three time intervals (0, +24 and +48 h) after the training. We found that the average VO2·BM-1·min-1 and VO2·BM-1·min-1 at the given speed increased from baseline (a pretest 48 h before the strength intervention) by 2.3-5.6% and culminated after 24 h. These changes in RE after the strength intervention were not statistically significant, when compared to the pretest (48 h before the intervention). The second investigation was conducted in seven runners (age 25±1.6 years). This time the intervention was plyometric (7 sec load, rest 2 min, maximum intensity, 3 sets, 6 exercises on the dominant lower limb). We found that the average VO2·BM-1·min-1 and VO2·BM-1·min-1 at given speeds at intervals 0, +24 and +48 h did not increase, when compared to the pretest (p < 0.05; max +1%). These minimal changes probably resulted from the design of the PT, which had not a sufficiently destructive effect on muscle cells. The comparison of these two investigations indicates a stronger (although statistically insignificant) deterioration of RE after 4RM training versus PT.
ER -
CACEK, Jan, Tomáš KALINA a Martin DOLEŽAL. Strength training and changes in the dynamics of running economy. Online. In \textit{Special Issue; Supplementary Issue: 8th INSHS International Christmas Sport Scientific Conference, 5-7 December 2013}. Alicante: University of Alicante, 2014, s.~467-473. ISSN~1988-5202. Dostupné z: https://dx.doi.org/10.14198/jhse.2014.9.Proc1.34.
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