Ilustración e independencia en Nueva España: la construcción de la identidad

Programa de doctorado: Estudios económicos, sociales y culturales en el Atlántico.

Effects of eccentric exercise on cycling efficiency

[EN] The aim of this study was to find out whether the efficiency of concentric muscle contraction is impaired by eccentric squatting exercise. The study involved 25 male physical education students in two experiments. In the first experiment 14 subjects undertook cycling exercise at 65% VO(2)max until exhaustion on two occasions. During the experimental condition their cycling was interrupted every 10 min so they could perform eccentric squatting exercise, whereas in the control condition they rested seated on the bike during the interruptions. Eccentric squatting consisted of 10 series of 25 reps with a load equivalent to 150% of the subject's body mass on the shoulders. During the first experiment gross efficiency decreased (mean +/- SE) from 17.1 +/- 0.3 to 16.0 +/- 0.4%, and from 17.2 +/- 0.3 to 16.5 +/- 0.4%, between the 2nd and 9th cycling bouts of the experimental and control conditions, respectively (both p < 0.05). The reduction in cycling efficiency was similar in both conditions (p = 0.10). Blood lactate concentration [La] was higher during the experimental than in the control condition (p < 0.05), but substrate oxidation was similar. MVC was decreased similarly (25-28%) in both conditions. The 11 subjects participating in the second experiment undertook 25 reps of eccentric squatting exercise only, each with a load equivalent to 95% of his maximal voluntary contraction (MVC), repeated every 3 min until exhaustion. One hour after the end of the eccentric squatting exercise series cycling, VO(2) and gross cycling efficiency were comparable to the values observed before the eccentric exercise. Both experimental protocols with eccentric exercise elicited similar muscle soreness 2 days later; however, at this time cycling efficiency was similar to that observed prior to eccentric exercise. The interposition of cycling exercise between the eccentric exercise bouts accelerated the recovery of MVC. We conclude that eccentric exercise does not alter or has only a marginal effect on gross cycling efficiency even in presence of marked muscle soreness.

The role of scrrencasts in virtual accounting education

[ES]Despite the rapid growth of new technologies in universities, there is still little empirical evidence on the incidence of certain e-learnings mechanisms on students’ success or failure, particularly among accounting students. According to the cognitive theory of multimedia learning, screencasts are an effective and efficient tool for enhancing students learning, particularly in online accounting education where face-to-face interactions between instructor and students are limited.

Piédrola: avance de las intervenciones (2013-2014)

[ES]El paraje de Piédrola se localiza a seis kilómetros de distancia al noroeste de la localidad de Alcázar de San Juan (Ciudad Real), en dirección al vecino municipio toledano de Quero. En este lugar se localiza uno de los yacimientos arqueológicos más importantes de la comarca, al menos en extensión y cronología. Éste toma su nombre del topónimo de la zona: Piédrola. Los trabajos arqueológicos acometidos desde 2013 en el lugar nos permiten trazar una primera aproximación a la historia de este singular paraje.

Una propuesta de libro de dirección : "La infanta de Velázquez" de López Mozo

Programa de doctorado: Literatura y teoría de la literatura. La fecha de publicación es la fecha de lectura