Provider: - Institution: - Data provided by Europeana Collections- Se recomienda empezar a entrenar de forma ligera e ir aumentando la intensidad progresivamente. También es conveniente realizar chequeos médicos, electrocardiogramas y revisiones coronarias. Conocer la propia frecuencia cardíaca es importante. El test de lactato indica cuál es la velocidad máxima a la que se debe correr para evitar la fatiga muscular.- It is recommended to start training lightly and increase the intensity progressively. Medical checks, electrocardiograms and coronary examinations are also appropriate. Knowing one's own heart rate is important. The lactate test indicates the maximum speed to be run to avoid muscle fatigue.- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana