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THE JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS

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The Journal of Sports Medicine and Physical Fitness 2016 Nov 04

language: English

The effect of a short- term training period on physiological parameters and running performance: intensity distribution versus constant- intensity exercise

Vicente J. CLEMENTE-SUÁREZ 1, Athanasios A. DALAMITROS 2, Pantelis T. NIKOLAIDIS 3

1 Department of Sport Science, European University of Madrid, Madrid, Spain; 2 School of Physical Education & Sports Science, Aristotle University of Thessaloniki, Thessaloníki, Greece; 3 Exercise Physiology Laboratory, Nikaia, Greece


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BACKGROUND: This study compared the effect of two training strategies differing on the weekly intensity distribution on physiological parameters and running performance in moderately trained endurance athletes.
METHODS: Thirty male athletes were equally divided into three groups, one following an increasing weekly aerobic intensity distribution (EXP1), one with constant weekly aerobic intensitydistribution (EXP2) and a control one, following a freely chosen program (CON). Before the training intervention, athletes performed a maximal exercise treadmill test to quantify the different zones allowing training to be controlled, based on blood lactate concentration values (BLa), over a 4- week period. Changes in exercise heart rate (HR), running velocity and rate of perceived exertion at three exercise intensities corresponding to 2.5, 4 and 8 mmol·l-1 of BLa were analyzed at three testing conditions: before (pre), after two (mid) and four weeks (post).
RESULTS: A significant increase (p ≤ 0.05) in running velocity at the intensity of 8 mmol·l–1 in EXP1 group was revealed at mid (5.5%) and post condition (11.5%), while EXP2 group showed a significant decrease in exercise HR at 4 mmol·l-1 between pre (6.7%) and post condition (9.0%) (p ≤ 0.05). The rest of the examined variables showed only trivial changes in both experimental groups at all testing conditions (p > 0.05). In addition, no changes were observed in CON group in any of the variables tested.
CONCLUSIONS: These results demonstrate that depending on the training goal, different intensity variation strategies should be followed to induce the desired adaptations.

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