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JOURNAL
OF
SPORTS SCIENCE &
MEDICINE
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Research
article
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EFFECTS OF A 4-WEEK ECCENTRIC TRAINING PROGRAM ON THE REPEATED BOUT EFFECT IN YOUNG ACTIVE WOMEN |
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Rodrigo Fernandez-Gonzalo1  ,
Guilherme Bresciani1, Fernanda de Souza-Teixeira2,
José Aldo Hernandez-Murua1, Rodrigo Jimenez-Jimenez1,
Javier Gonzalez-Gallego1 and José Antonio de Paz1 |
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1Institute of Biomedicine (IBIOMED), University of Leon, León. Spain, 2School of Physical Education, Department of Physical Education and Health, Federal University of Pelotas, Pelotas/RS, Brazil |
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© Journal of Sports Science and Medicine (2011) 10, 692 - 699 |
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| ABSTRACT | |||
| The aim of this study was to analyze the responses of women to
the repeated bout effect (RBE) and to a short eccentric training program.
Twenty-four young females were randomly assigned to a training group (TG,
n = 14) or a control group (CG, n = 10). They performed two identical acute
eccentric bouts (120 repetitions at 70% of 1RM) in a leg-press device in
an 8 weeks interval. TG followed a 4-week-eccentric-training program between
the bouts. Maximal isometric contraction, range of motion, peak power and
quadriceps muscle soreness were compared between and within groups before
and after the two acute eccentric bouts. TG and CG presented significant
losses of isometric strength and peak power, and an increment in soreness
after the first bout. Isometric strength and peak power were recovered faster
in CG after the second bout (p < 0.05) compared with TG, which showed
a similar recovery of these parameters after the second bout compared with
the first one. A decrease in soreness and a faster recovery of range of
motion were found in TG (p < 0.05) following the second bout compared
with the first one, but not in CG. Data indicate that a 4-week eccentric
training program may prevent the RBE over those adaptations related with
muscle damage (e.g. strength loss), but it may increase RBE impact on inflammatory
processes (e.g. soreness). Key words: Lengthening contraction; strength; peak power. |
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