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Martínez Cava, Alejandro

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Martínez Cava, Alejandro
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Universidad de Murcia. Departamento de Actividad Física y Deporte
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    Velocity-based method in free-weight and machine-based training modalities: the degree of freedom matters
    (Lippincott, Williams & Wilkins, 2023-09) Hernández Belmonte, Alejandro; Buendía Romero, Ángel; García Pallarés, Jesús; Martínez Cava, Alejandro; Actividad Física y Deporte
    This study aimed to analyze and compare the load-velocity relationships of free-weight and machine-based modalities of 4 resistance exercises. Moreover, we examined the influence of the subject's strength level on these load-velocity relationships. Fifty men completed a loading test in the free-weight and machine-based modalities of the bench press, full squat, shoulder press, and prone bench pull exercises. General and individual relationships between relative intensity (%1RM) and velocity variables were studied through the coefficient of determination (R2) and standard error of the estimate (SEE). Moreover, the velocity attained to each %1RM was compared between both modalities. Subjects were divided into stronger and weaker to study whether the subject's strength level influences the mean test (mean propulsive velocity [MPVTest]) and 1RM (MPV1RM) velocities. For both modalities, very close relationships (R2 ≥ 0.95) and reduced estimation errors were found when velocity was analyzed as a dependent (SEE ≤ 0.086 m·s−1) and independent (SEE ≤ 5.7% 1RM) variable concerning the %1RM. Fits were found to be higher (R2 ≥ 0.995) for individual load-velocity relationships. Concerning the between-modality comparison, the velocity attained at each intensity (from 30 to 100% 1RM) was significantly faster for the free-weight variant. Finally, nonsignificant differences were found when comparing MPVTest (differences ≤ 0.02 m·s−1) and MPV1RM (differences ≤ 0.01 m·s−1) between stronger and weaker subjects. These findings prove the accuracy and stability of the velocity-based method in the free-weight and machine-based variants but highlight the need to use the load-velocity relationship (preferably the individual one) specific to each training modality.
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    Material audiovisual de apoyo a la docencia de la asignatura Fundamentos de la Gimnasia: progresiones hacia las habilidades gimnásticas complejas
    (2018) Armada Martínez, Celia; Morán Navarro, Ricardo; Conesa Ros, Elena; García Pallarés, Jesús; Martínez Cava, Alejandro; Facultades, Departamentos, Servicios y Escuelas::Facultades de la UMU; Facultad de Ciencias del Deporte; Departamento de Actividad Física y del Deporte
    Resultados del Proyecto de Innovación Docente homónimo, que consta de una librería de imágenes y vídeos explicativos de las habilidades gimnásticas complejas, junto a los errores que se pueden cometer, ejercicios de progresiones y ayudas necesarias para facilitar su aprendizaje de la manera más eficaz.
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    Level of effort: a reliable and practical alternative to the velocity-based approach for monitoring resistance training
    (Lippincott, Williams & Wilkins, 2022-11) Hernández Belmonte, Alejandro; García Pallarés, Jesús; Courel Ibáñez, Javier; Conesa Ros, Elena; Martínez Cava, Alejandro; Actividad Física y Deporte
    This study analyzed the potential of the level of effort methodology as an accurate indicator of the programmed relative load (percentage of one-repetition maximum [%1RM]) and intraset volume of the set during resistance training in the bench press, full squat, shoulder press, and prone bench pull exercises, through 3 specific objectives: (a) to examine the intersubject and intrasubject variability in the number of repetitions to failure (nRM) against the actual %1RM lifted (adjusted by the individual velocity), (b) to investigate the relationship between the number of repetitions completed and velocity loss reached, and (c) to study the influence of the subject's strength level on the aforementioned parameters. After determining their individual load-velocity relationships, 30 subjects with low (n = 10), medium (n = 10), and high (n = 10) relative strength levels completed 2 rounds of nRM tests against their 65, 75, 85, and 95% 1RM in the 4 exercises. The velocity of all repetitions was monitored using a linear transducer. Intersubject and intrasubject variability analyses included the 95% confidence intervals (CIs) and the the standard error of measurement (SEM), respectively. Coefficient of determination (R2) was used as the indicator of relationship. nRM showed a limited intersubject (CI ≤ 4 repetitions) and a very low intrasubject (SEM ≤1.9 repetitions) variability for all the strength levels, %1RM, and exercises analyzed. A very close relationship (R2 ≥ 0.97) between the number of repetitions completed and the percentage of velocity loss reached (from 10 to 60%) was found. These findings strengthen the level of effort as a reliable, precise, and practical strategy for programming resistance training.
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    Adaptations in athletic performance and muscle architecture are not meaningfully conditioned by training free-weight versus machine-based exercises: Challenging a traditional assumption using the veloicity-based method
    (Wiley, 2023-06-21) Hernández Belmonte, Alejandro; Buendía Romero, Ángel; Franco López, Francisco; Martínez Cava, Alejandro; García Pallarés, Jesús; García Pallarés, Jesús; Martínez Cava, Alejandro; Franco López, Francisco; Actividad Física y Deporte
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