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JOURNAL
OF
SPORTS SCIENCE &
MEDICINE
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Research
article
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POST-SEASON DETRAINING EFFECTS ON PHYSIOLOGICAL AND PERFORMANCE PARAMETERS IN TOP-LEVEL KAYAKERS: COMPARISON OF TWO RECOVERY STRATEGIES |
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Jesús García-Pallarés1  ,
Luis Carrasco2, Arturo Díaz1 and Luis Sánchez-Medina3 |
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1Faculty of Sport Sciences, University of Murcia, Spain, 2Department of Physical Education and Sport, University of Seville, Spain, 3Faculty of Sport, Pablo de Olavide University, Seville, Spain. |
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© Journal of Sports Science and Medicine (2009) 8, 622 - 628 |
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| ABSTRACT | |||
| This study analyzed changes in physiological parameters, hormonal
markers and kayaking performance following 5-wk of reduced training (RT)
or complete training cessation (TC). Fourteen top-level male kayakers were
randomly assigned to either a TC (n = 7) or RT group (n = 7) at the end
of their competitive season (T1). Subjects undertook blood sampling and
an incremental test to exhaustion on a kayak ergometer at T1 and again following
5 weeks of RT or TC (T2). Maximal oxygen uptake (VO2max)
and oxygen uptake at second ventilatory threshold (VT2) significantly decreased
following TC (-10.1% and -8.8%, respectively). Significant decreases were
also observed in RT group but to a lesser extent (-4.8% and -5.7% respectively).
Heart rate at VT2 showed significant increases following TC (3.5%). However,
no changes, were detected in heart rate at VO2max
in any group. Peak blood lactate remained unchanged in both groups at T2.
Paddling speed at VO2max
declined significantly at T2 in the TC group (-3.3%), while paddling speed
at VT2 declined significantly in both groups (-5.0% and -4.2% for TC and
RT, respectively). Stroke rate at VO2max
and at VT2 increased significantly only following TC by 5.2% and 4.9%, respectively.
Paddling power at VO2max
and at VT2 decreased significantly in both groups although the values observed
following RT were higher than those observed following TC. A significant
decline in cortisol levels (-30%) was observed in both groups, while a higher
increase in testosterone to cortisol ratio was detected in the RT group.
These results indicate that a RT strategy may be more effective than complete
TC in order to avoid excessive declines in cardiovascular function and kayaking
performance in top-level paddlers.
Key words: Detraining; aerobic power; kayaking; paddling parameters; hormonal profile. |
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