José Manuel Sarabia

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Variable practice has been shown to be an effective strategy to improve open motor skills. However, the usefulness of this procedure in closed motor skills remains controversial. The following study has the objective of analysing the effects of variability practice in the improvement of a closed skill. The skill studied has been the tennis serve. Thirty(More)
PURPOSE To compare the effects of combining high-intensity training (HIT) and sport-specific drill training (MT) versus sportspecific drill training alone (DT) on fitness performance characteristics in young tennis players. METHODS Twenty young tennis players (14.8 ± 0.1 y) were assigned to either DT (n = 10) or MT (n = 10) for 8 wk. Tennis drills(More)
The aims of the present study were to evaluate the validity and reliability of the two different change of direction ability (CODA) tests in elite football players with cerebral palsy (CP) and to analyse the differences in performance of this ability between current functional classes (FT) and controls. The sample consisted of 96 international cerebral(More)
This study examined the effects of a 6-week non-failure strength training program in youth tennis players. Twenty tennis players (age: 15.0 ± 1 years, body height: 170.9 ± 5.1 cm, body mass: 63.3 ± 9.1 kg) were divided into experimental and control groups. Pre and post-tests included half squats, bench press, squat jumps, countermovement-jumps and side-ball(More)
Preseasons in tennis are normally reduced to 5 to 7 weeks duration, and coaches should use an integrated approach to conditioning and skill-based work. The aim of the present study was to investigate the effects of adding a high-intensity training (HIT) shock microcycle to the normal training content in several physical performance indicators in the(More)
INTRODUCTION The effect of exercise on the axonal diameter of α-motoneurons has been poorly studied up to now. Only four old articles about this issue can be found at the literature, showing two of them an increase (Edds 1950; Samorajski & Rolsten 1957) and the other two a decrease (Andersson & Edstrom 1957; Roy, Gilliam, Taylor & Heusner 1983) in axonal(More)
INTRODUCTION Several activities, both individuals and team sports are characterized by repeating some specific sports movements as explosive as possible, or repeated efforts during the entire match. This kind of ability has been defined as repeated sprint ability (RSA), and it is defined by efforts lasting lest than 10 second, with a maximal or near-maximal(More)
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