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Author: F Pareja-Blanco (24)


Dec
2017

Rate of force development (RFD) refers to the ability of the neuromuscular system to increase contractile force from a low or resting level when muscle activation is performed as quickly as possible, and it is considered an important muscle strength parameter, especially for athletes in sports requiring high-speed actions. The assessment of RFD has been used for strength diagnosis, to monitor the effects of training interventions in both healthy populations and patients, discriminate high-level athletes from those of lower levels, evaluate the impairment in mechanical muscle function after acute bouts of eccentric muscle actions and estimate the degree of fatigue and recovery after acute exhausting exercise. Notably, the evaluation of RFD in human skeletal muscle is a complex task as influenced by numerous distinct methodological factors including mode of contraction, type of instruction, method used to quantify RFD, devices used for force/torque recording and ambient temperature.

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Jun
2017

This study aimed to analyze various fitness qualities in handball players of different ages, and to determine the relationships between these parameters and throwing velocity. Forty-four handball players participated, pooled by age groups: ELITE (n = 13); under-18 (U18, n = 16); under-16 (U16, n = 15). The following tests were completed: 20-m running sprints; countermovement jumps (CMJ); jump squat to determine the load that elicited ∼20 cm jump height (JSLOAD-20cm); a progressive loading test in full-squat and bench-press to determine the load that elicited ∼1 m·s (SQ-V1-LOAD and BP-V1-LOAD), and handball throwing (Jump Throw and 3-Step Throw).

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Dec
1969

The purpose of this study was to analyze changes in sprint, strength, hematological, and hormonal parameters in high-level 800 m athletes during a complete athletics season. Thirteen male athletes of national and international level in 800 m (personal best ranging from 1:43 to 1:58 min:ss) participated in this study. A total of 5 tests were conducted during a complete athletics season.

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