Francisco J. Ayala

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The main purposes of this study were to (a) investigate acute effects of static and dynamic lower limb stretching routines on total response time, pre-motor time and motor time of the medial and lateral hamstrings during maximal eccentric isokinetic knee flexion; and (b) determine whether static and dynamic routines elicit similar responses. A total of 38(More)
The purposes of this study were twofold: (a) to examine the test-retest reproducibility and concurrent validity of the horizontal hip joint angle test (H-HJA) and vertical hip joint angle test (V-HJA) for estimating hamstring flexibility measured with an inclinometer during the passive straight-leg raise test (PSLR) and (b) to determine whether the H-HJA(More)
OBJECTIVES To examine the absolute reliability of five methods for estimating hamstring flexibility in professional futsal players. DESIGN Absolute reliability laboratory study (k=4). METHODS A total of 46 male futsal players (172.9±4.5 cm; 69.7±7.5 Kg) completed the study. All participants performed each measurement test twice in a randomized order on(More)
The main purposes of this study were to investigate the acute effects of static and dynamic lower limb stretching routines: (a) on peak torque, total external work and joint angle at peak torque of the hamstrings during maximal eccentric isokinetic leg flexion; (b) on unilateral hamstring to quadriceps (H/Q) strength ratios; as well as (c) to determine(More)
Despite the large number of studies that have examined the acute effects of different warm up modalities (WU) on physical performance, none of them have documented the time course of potential performance recovery in tennis players. The aim of this study was twofold: (a) to analyze and compare the acute effects of two different WU modalities (traditional WU(More)
OBJECTIVE To describe the range of motion (ROM) profile (flexion, extension, abduction, internal and external rotation) of the hip in elite tennis players; and (b) to analyse if there are sex-related differences in the hip ROM. DESIGN Cohort study. SETTING Controlled laboratory environment. PARTICIPANTS 81 male and 28 female tennis players completed(More)
The purpose of this study was twofold: (1) to describe a new version of the weight-bearing ankle lunge test (WBLT) that is simple to administer, that allows clinicians and sports medicine practitioners to directly assess (in degrees) the ankle dorsiflexion range of motion in a very short period of time while adopting a comfortable testing position; as well(More)
The main purpose of this study was to determine the absolute and relative reliability of isokinetic peak torque (PT), angle of peak torque (APT), average power (PW) and total work (TW) for knee flexion and extension during concentric and eccentric actions measured in a prone position at 60, 180 and 240° s(-1). A total of 50 recreational athletes completed(More)
Chardin, and decided that evolution was the subject to which I wanted to dedicate my life. Some Spanish scientists put me in touch with Theodosius Dobzhansky, one of the twentieth-century giants of evolution. I came to New York in 1961 to study under his mentorship. How was it working with Dobzhansky? He was a great mentor. Dobzhansky was an(More)
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