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Influencia de la dieta y del ejercicio físico sobre las concentraciones plasmáticas de las diferentes fracciones lipoproteicas aisladas mediante ultracentrifugación.

  • Identification data

    Identifier: PC:3298
    Authors:
    SALAS SALVADÓ, JORGEJ JovenL MasanaC VillabonaJ AnsoleagaA EscobarR Solà
    Abstract:
    Plasmatic levels of cholesterol and triglycerides in each lipoprotein fraction, ultracentrifugally isolated, as well as the plasma apoprotein A and B levels, were assessed in 13 healthy male body-builders. A dietary interview was performed in order to valorate the nutritional status of these subjects. The diet in body-builders was substantially different from that of the control group. The intake calories, proteins, total lipids and cholesterol was significantly higher; the intake of saturated fatty acids was significantly (p<0.001) higher (56.1 ± 19.6 g/day) than in the control group (30.7± 9.5 g/day) what made that the ratio P/S was about half (0.24 ± 0.11) of that o the control group (0.47 ± 0.14) with a p < 0.05. The diet and the physical activity determined a statistically significant (p < 0.05) increase in the plasma cholesterol of body-builders (195.4 ± 36.1 mg/dl; p < 0.001) respect to control group (163.7 ± 41.2 mg/dl). The high density lipoprotein cholesterol was also increased in the group of athletes (67.1 ± 13.4 mg/dl, versus 50.2 ± 9.5 mg/dl; p < 0.001). The other changes in the different lipoprotein families, except for HDL-triglycerides, did not reach statistical significance. The atherogenic effect of the diet rich in cholesterol and saturated fatty acids was overlapped by the protective effect of the physical exercise, at least respect to changes in lipoprotein composition. In any attempt to study the influence of one variable, the other must be borne in mind.
  • Others:

    Department: Bioquímica i Biotecnologia
    URV's Author/s: SALAS SALVADÓ, JORGE; J Joven ; L Masana; C Villabona; J Ansoleaga; A Escobar; R Solà
    Keywords: fracciones lipoproteicas Influence diet concentraciones plasmáticas lipoprotein factions
    Abstract: Plasmatic levels of cholesterol and triglycerides in each lipoprotein fraction, ultracentrifugally isolated, as well as the plasma apoprotein A and B levels, were assessed in 13 healthy male body-builders. A dietary interview was performed in order to valorate the nutritional status of these subjects. The diet in body-builders was substantially different from that of the control group. The intake calories, proteins, total lipids and cholesterol was significantly higher; the intake of saturated fatty acids was significantly (p<0.001) higher (56.1 ± 19.6 g/day) than in the control group (30.7± 9.5 g/day) what made that the ratio P/S was about half (0.24 ± 0.11) of that o the control group (0.47 ± 0.14) with a p < 0.05. The diet and the physical activity determined a statistically significant (p < 0.05) increase in the plasma cholesterol of body-builders (195.4 ± 36.1 mg/dl; p < 0.001) respect to control group (163.7 ± 41.2 mg/dl). The high density lipoprotein cholesterol was also increased in the group of athletes (67.1 ± 13.4 mg/dl, versus 50.2 ± 9.5 mg/dl; p < 0.001). The other changes in the different lipoprotein families, except for HDL-triglycerides, did not reach statistical significance. The atherogenic effect of the diet rich in cholesterol and saturated fatty acids was overlapped by the protective effect of the physical exercise, at least respect to changes in lipoprotein composition. In any attempt to study the influence of one variable, the other must be borne in mind. Se han estudiado en 13 varones sanos dedicados a la práctica del culturismo las concentraciones plasmáticas de colesterol y triglicéridos en cada una de las fracciones lipoproteicas aisladas por ultracentrifugación, así como las apoproteínas A y B en el plasma. Se les practicó una encuesta dietética para valorar su estado nutricional. La dieta de los deportistas era sustancialmente diferente de la del grupo control. La ingesta de calorías, proteínas, lípidos y colesterol era significativamente superior; la ingesta de ácidos grasos saturados era significativamente superior (p<0.001) en el grupo de deportistas (56.1 ± 19.6 g/día) que en el grupo control (30.7± 9.5 g/día), con lo que el cociente ácidos grasos poliinsaturados/ácidos grasos saturados (P/S) era aproximadamente la mitad (0.24 ± 0.11) que el de los controles (0.47 ± 0.14), con una significación estadística de p<0.05. La dieta, así como la actividad física, provocaron un aumento estadísticamente significativo (p<0.05) del colesterol plasmático en el grupo de deportistas (195.4 ± 36.1 mg/dl) con respecto al grupo control (163.7 ± 41.2 mg/dl). El de las lipoporteínas de alta densidad (colesterol-HDL) también estaba significativamente elevado (p<0.001) en los deportistas (67.1 ± 13.4 mg/dl) en comparación con los controles (50.2 ± 9.5 mg/dl). El resto de cambios, excepto los triglicéridos de las HDL, en las diferentes familias lipoproteicas, no alcanzó significación estadística. El efecto aterogénico de la dieta rica en colesterol y ácidos grasos saturados queda enmascarado por el efecto protector del ejercicio físico intenso, al menos por lo que hace referencia a las concentraciones plasmáticas de lipoproteínas. Ello indica que cualquier intento de estudiar una de estas variables debe tener en cuenta obligatoriamente la otra.
    Research group: Alimentació, Nutrició, Creixement i Salut Mental
    Thematic Areas: Bioquímica i biotecnologia Biochemistry and technology Bioquímica y biotecnología
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0025-7753
    Author identifier: ORCID - 0000-0003-2700-7459; orcid.org/0000-0003-2749-4541; N/D; N/D; N/D; N/D; orcid.org/0000-0002-8359-235X
    Last page: 500
    Journal volume: 89
    Papper version: info:eu-repo/semantics/publishedVersion
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Entity: Universitat Rovira i Virgili
    Journal publication year: 1987
    First page: 497
    Publication Type: Artículo Article Article
  • Keywords:

    fracciones lipoproteicas
    Influence diet
    concentraciones plasmáticas
    lipoprotein factions
    Bioquímica i biotecnologia
    Biochemistry and technology
    Bioquímica y biotecnología
    0025-7753
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