Fragmentation of daily rhythms associates with obesity and cardiorespiratory fitness in adolescents: The HELENA study.
Garaulet M, Martinez-Nicolas A, Ruiz JR, Konstabel K, Labayen I, González-Gross M, Marcos A, Molnar D, Widhalm K, Casajús JA, De Henauw S, Kafatos A, Breidenassel C, Sjöström M, Castillo MJ, Moreno LA, Madrid JA, Ortega FB;