Effect of a periodized power training program on the functional performances and contractile properties of the quadriceps in sprinters.
Our purpose was to compare the effect of a periodized preparation consisting of power endurance training and high-intensity power training on the contractile properties of the quadriceps muscle and functional performances in well trained male sprinters (n = 7). After 4 weeks of high-intensity power training, 60-m sprint running time improved by an average of 1.83% (SD = 0.96; p < .05). This improvement was inversely related to an increase in maximal voluntary contraction torque (r = -.89, p < .05) and poorly correlated with changes in the contractile kinetics of the quadriceps muscle (r range from .36 to -.46). These findings suggest that sprint performance is poorly predicted by muscle intrinsic properties and that a neural adaptation appears to explain most of the observed functional adaptations.
Research Center for Fundamental and Clinical Movement Science, Lithuanian Academy of Physical Education, Kaunas. s.kamandulis@lkka.lt
Sigitas
S
Kamandulis
Albertas
A
Skurvydas
Marius
M
Brazaitis
Aleksas
A
Stanislovaitis
Jacques
J
Duchateau
Jūrate
J
Stanislovaitiene
D000704:Analysis of Variance; D001696:Biomechanical Phenomena; D004558:Electric Stimulation; D006801:Humans; D008297:Male; D009119:Muscle Contraction / Q000502:physiology; D010806:Physical Education and Training / Q000379:methods*; D010807:Physical Endurance / Q000502:physiology; D052097:Quadriceps Muscle / Q000502:physiology*; D012420:Running / Q000502:physiology*; D019415:Torque; D055815:Young Adult