 The term "rhythmanalysis" was coined by Portuguese philosopher Lúcio Alberto Pinheiro dos Santos who published a first theory of rhythmanalysis in 1931, focused on its physiological dimensions.His ideas on rhythmanalysis have been later further developed by Gaston Bachelard in his 1936 book "La dialectique de la durée" (The Dialectic of Duration).Lefebvre’s concept of rhythm concerns the repetition of a measure at a frequency.