Magnitude of muscle strength and mass adaptations between high-load resistance training versus low-load resistance training associated with blood-flow restriction: a systematic review and meta-analysis - Lixandrão, M. E; Ugrinowitsch, Carlos; Berton, R; Vechin, F. C; Conceição, M. S; Damas, F; Libardi, C. A; Roschel, Hamilton (Sports Medicine, 2018)