Essential hypertension is associated with insulin resistance and hyperinsulinemia. To assess whether hyperinsulinemia is also present in hypertensive disease induced by pregnancy, we studied the plasma glucose and insulin responses to 50 g of oral glucose in 10 women with definite, severe preeclampsia but normal glucose tolerance, and compared them with the responses observed in a well-matched control group of healthy pregnant women. Fasting plasma glucose concentrations were similar in healthy and preeclamptic pregnant mothers (4.1 +/- 0.4 mmol/L v 4.5 +/- 0.4 mmol/L, respectively, P = NS). Similar plasma glucose levels were also observed after glucose ingestion (5.5 +/- 0.3 mmol/L v 6.2 +/- 0.3 mmol/L in healthy and preeclamptic women, respectively P = NS). In contrast, fasting plasma insulin concentrations in the preeclamptic women were significantly higher than in normal pregnant mothers (175 +/- 29 pmol/L v 101 +/- 11 pmol/L, P < .05). Postload plasma insulin concentrations were nearly fourfold higher in the preeclamptic group as compared with the control group (1162 +/- 70 pmol/L v 366 +/- 39 pmol/L, P < .01). We conclude that preeclampsia is associated with marked hyperinsulinemia both in the fasting state and after oral glucose ingestion, suggesting that insulin resistance may play a role in pregnancy-induced hypertension.

Efecto del saque en suspensión sobre la construcción del ataque en el Efecto del saque en suspensión sobre la construcción del ataque en el voleibol sub-14 español voleibol sub-14 español El presente estudio pretende observar la incidencia del saque en suspensión sobre la construcción del ataque en el voleibol en categoría infantil. Este aspecto puede influir, según diversos expertos, sobre el correcto desarrollo de los jóvenes jugadores. Para ello se observaron 2021 acciones del Campeonato de España Escolar Masculino en categoría infantil. Se estudió la relación entre el saque en suspensión y las posibilidades de construcción del equipo que lo recibe, así como la forma de culminar el punto y el resultado del mismo. Los resultados constataron que el saque en suspensión afectó significativamente a la falta de efectividad en el momento de construir una acción colectiva por parte del equipo receptor, y en la dificultad para que esta construcción culmine en un remate. Por otro lado, no se encontraron diferencias significativas entre la técnica de saque utilizada y el resultado del punto. Todo ello nos invita a cuestionar la idoneidad del saque en suspensión en estas edades.Palabras clave: voleibol; saque en suspensión; ataque; jóvenes jugadores. R e s u m e nCorrespondencia/correspondence: Aurelio Ureña Espa Facultad de Ciencias de la Actividad Física y el Deporte Universidad de Granada. España e-mal: aurena@ugr.es The aim of this study, is to observe the jump serve incidence on the attack phase in the under 14 volleyball. This aspect could influence, as the expert shows, on the right young player's development. The study consisted in an observation of 2021 plays during the male under 14 Spanish championships. The relationship between jump serve and attack construction possibilities were studied, also the technical way to conclude the point and the result of that play. The results showed a lack of effectiveness to create a team action during the reception phase after a jump serve execution, which means an increase in the difficulty to close the point with a spike or overhead shot. However, the study could not find differences in the comparison of the serve technique and the result of each point. In conclusion, the results bring us to question the jump serve suitability at this age.

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