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La pulsioximetria ha sido validada como una tecnica muy fiable para valorar de forma no invasiva la saturacion arterial. Nos proponemos estudiar que variaciones sufren los niveles de SaO2 durante la realizacion de ejercicio aerobico en distintos grupos de mujeres: pre y postmenopausicas. Para ello clasificaremos las desaturaciones en leves, moderadas y graves. Contamos con la participacion consentida y voluntaria de 31 mujeres sedentarias, divididas en dos grupos: pre y postmenopausicas. Valoramos la SaO2 a lo largo de una sesion de 60 minutos de aerobic, cada 15 minutos, determinando el nivel de desaturacion de cada participante. En reposo no encontramos diferencias significativas en los niveles de SaO2 entre ambos grupos, mientras que durante el ejercicio la frecuencia con la que encontramos SaO2 normales es del 92,3% en pre y del 66,7% en postmenopausicas. Las desaturaciones leves aparecen con una frecuencia del 7,7% en pre y del 27,8% en postmenopausicas, mientras que las desaturaciones moderadas tan solo se observan en menopausicas (5,6%). Como conclusiones, podemos afirmar que durante la realizacion de ejercicio aerobico, es mayor el numero de de saturaciones que sufren las mujeres postmenopausicas, frente a las mujeres premenopausicas. La pulsioximetria y la valoracion de la SaO2 pueden ser una herramienta util al trabajar con mujeres postmenopausicas, que sufren mas desaturaciones, para: detectar intensidades elevadas cuando no se disponen de otros medios, por su relacion con la produccion de lactato, asi como por tratarse de una tecnica muy sencilla y no invasiva. Palabras clave: saturacion arterial, pulsioximetria, ejercicio fisico. === Abstract Pulsioximetry has been validated as a very reliable non-invasive technique to assess arterial saturation (SaO2). Our aim was to study the variations of SaO2 during aerobic exercise in different groups of women: pre- and post-menopausal. Arterial desaturation was classified as light, moderate, and serious. Thirty-one sedentary women gave their consent to participate voluntarily in this study and were divided into two groups: pre-and post menopausal. We measured SaO2 during a 60-minute session of aerobic dance, every 15 minutes, to determine the level of each participant’s arterial desaturation. At rest, no significant differences in SaO2 between groups were observed. However, the pre-menopausal group had a higher frequency of normal SaO2 (92.3%) than post-menopausal women (66.7%). Light arterial desaturation was less frequent in pre (7.7%) than post-menopausal (27.8%) women. Moderate levels of desaturation were only observed in post-menopausal women (5.6%). In conclusion, post-menopausal women experience more arterial desaturation than pre-menopausal women during aerobic exercise. Pulsioximetry and arterial desaturation evaluation may be a useful tool for post-menopausal women, who suffer more desaturation, in order to detect high intensities when other means are not available, both due to its relationship with lactate production as well as being a very simple and non-invasive technique. Key words: arterial saturation, pulsioximetry, physical exercise.

cultura, ciencia y deporte

Desaturación arterial de oxígeno en mujeres pre y postmenopáusicas durante la realización de ejercicio aeróbico. (Arterial oxygen desaturation in pre- and post-menopausal women during aerobic exercise)