Participants and design
sleepless, muscular injuries, TOD
The sample size was a priori calculated using the G*power software (version 3.1; Düsseldorf, GermanyHe/she is a first-year students from public universities in sports science,Aged between 18–20 years,Has never taken part in this type of experiment,Has normal or corrected to normal vision,Has never played or watching trainings or competitions in basketball,He/she is right-handed,He/she is classified as “neither type” according to his/her responses on the Morningness-Eveningness Questionnaire (MEQHe/she who does not reveal (a) a nap activity before afternoon sessions, (b) a lack of sleep the night before, or (c) a sleepless night,Has no shift work,Has no current muscular injuries,He/she is not addicted to drug, alcohol, nicotine or caffeine.CONSORT flowchart of the study.The study had a 3 (treatment: video vs. static pictures vs. enriched static-pictures) × 2 (TOD: morning vs. afternoon) factorial design, with repeated measures on the “TOD” factor to determine inter-condition and intra-condition differences. Participants were quasi-randomly (i.e., matched for gender) allocated to one of the three experimental conditions, so that each group contained equal numbers of males (n = 5) and females (n = 15).