Artículo original
El perfil lipídico-metabólico en los adolescentes está más influido por la condición física que por la actividad física (estudio AVENA)Lipid and Metabolic Profiles in Adolescents Are Affected More by Physical Fitness Than Physical Activity (AVENA Study),

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Introducción y objetivos

Estudiar si la actividad física realizada o el grado de condición física (capacidad aeróbica y fuerza) que poseen los adolescentes españoles, están asociados con su perfil lipídico-metabólico.

Métodos

Del total de 2.859 adolescentes españoles (13-18,5 años) evaluados en el estudio AVENA (Alimentación y Valoración del Estado Nutricional en Adolescentes), 460 (248 varones y 212 mujeres) fueron seleccionados aleatoriamente para un análisis sanguíneo. Se evaluó el grado de actividad física mediante cuestionarios. La capacidad aeróbica fue estimada a partir del test de Course-Navette. La fuerza muscular se valoró mediante una dinamometría manual, un salto de longitud y la flexión de brazos en una barra. Se calculó un índice lipídico- metabólico de riesgo cardiovascular según las concentraciones de triglicéridos, colesterol unido a lipoproteínas de baja densidad (cLDL), colesterol unido a lipoproteínas de alta densidad (cHDL) y glucosa.

Resultados

La actividad física no mostró asociación con el índice lipídico-metabólico en ninguno de los dos sexos. El índice lipídico-metabólico se relacionó inversamente con la capacidad aeróbica en los varones (p = 0,003) tras ajustar por el grado de actividad física y la fuerza muscular. En las mujeres, un perfil lipídico-metabólico más cardiosaludable se asoció con una mayor fuerza muscular (p = 0,048) tras ajustar por la capacidad aeróbica.

Conclusiones

Estos resultados indican que en la adolescencia es el grado de condición física, y no tanto la actividad física, lo que se relaciona con el perfil de riesgo lipídico- metabólico. Una alta capacidad aeróbica en varones y un alto grado de fuerza muscular en mujeres se asocian con un menor riesgo lipídico-metabólico de enfermedad cardiovascular.

Introduction and objectives

To determine whether the level of physical activity or physical fitness (i.e., aerobic capacity and muscle strength) in Spanish adolescents influences lipid and metabolic profiles.

Methods

From a total of 2859 Spanish adolescents (age 13.0–18.5 years) taking part in the AVENA (Alimentación y Valoración del Estado Nutricional en Adolescentes) study, 460 (248 male, 212 female) were randomly selected for blood analysis. Their level of physical activity was determined by questionnaire. Aerobic capacity was assessed using the Course–Navette test. Muscle strength was evaluated using manual dynamometry, the long jump test, and the flexed arm hang test. A lipid-metabolic cardiovascular risk index was derived from the levels of triglycerides, low-density lipoprotein cholesterol (LDLC), high-density lipoprotein cholesterol (HDLC), and glucose.

Results

No relationship was found between the level of physical activity and lipid–metabolic index in either sex. In contrast, there was an inverse relationship between the lipid–metabolic index and aerobic capacity in males (P=.003) after adjustment for physical activity level and muscle strength. In females, a favorable lipid-metabolic index was associated with greater muscle strength (P=.048) after adjustment for aerobic capacity.

Conclusions

These results indicate that, in adolescents, physical fitness, and not physical activity, is related to lipid and metabolic cardiovascular risk. Higher aerobic capacity in males and greater muscle strength in females were associated with lower lipid and metabolic risk factors for cardiovascular disease.

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    En el anexo se expone la relación de participantes en el estudio AVENA.

    Financiado por el Ministerio Español de Sanidad y Consumo (FIS n.° 00/0015), fondos FEDER-FSE, Ministerio Español de Educación y Ciencia (AP2002-2920; AP2003-2138; AP2004-2745; AP2005-4358), Consejo Superior de Deportes (Ref: 05/UPB32/01, 109/UPB31/03 y 13/UPB20/04), y subvencionado por Panrico S.A., Madaus S.A. y Procter & Gamble S.A.

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