Introduction: Volleyball is a dynamic sport in which athletes often use jumps and small displacements during rallies. However, temporal aspects and physical behaviors (e.g., jumps per set and specific movements per set) have not yet been investigated by considering the competition phase and role. Objective: This study aimed to compare temporal and physical indicators by considering the competition phase, set result, and role when possible. Methods: The observed matches were from FIVB Beach Volleyball U21 World Championships 2019. A total of 8 matches, 16 sets, and 556 rallies were observed. The observed parameters showed great intra- and inter-reliability for qualitative and quantitative variables [Kappa = 0.85 - Level of Agreement: strong; intraclass correlation coefficients (ICC = 0.90)]. The sets were split into the phase of the competition (group or final), result of the set (winner or loser), and roles (blocker or defender). The temporal variables (i.e., rally, rest time between rallies, total work time, total rest time, duration of the set, duration of the match, TRT: TWR ratio, and the number of rallies) were compared by considering the competition phase; physical variables (jumps per set, jumps per set in the attack, and specifics movements) were compared by considering the competition phase, set result, and roles. In addition, rallies are classified as short (=3 s), medium (4-7 s), and long (=8 s), and the association of the types of rallies with the competition phase was confirmed. Results: Medium rallies are more frequent than other types (~58%). Blockers jump more times per set (p = 0.003) and have more digs withmovement (p < 0.001). Conclusions: The competition phase seems to slightly increase the temporal and physical indicators. Moreover, blockers are more physically required.
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