Implementation of Sleep-Enhancing Strategies During Tapering in Elite Swimmers

This study examined whether performance changes following a taper incorporating sleep-enhancing strategies differed according to the pre-taper fatigue level in elite swimmers. Physiological, psychological, and biomechanical parameters were assessed in twenty-seven elite swimmers at two time points to estimate pre-taper fatigue: T0 and T1 (10 and 3 weeks before the main competition, respectively). Race performance was officially recorded at T1 and during the main competition. Sleep-enhancing strategies included two sleep education sessions, five consecutive evenings of cryostimulation, and the use of a mattress topper with high thermal conductivity. Statistical significance was set at p ≤ 0.05. Thirteen swimmers (17 ± 2 y) were classified as acutely fatigued (AF) and fourteen (17 ± 1 y) as functionally overreached (F-OR). From T1 to competition, performance changes were not different between groups (AF: +1.2 ± 1.6% vs. F-OR: +0.4 ± 2.3%). A total of 82% of swimmers in the AF group and 67% in the F-OR group achieved a performance improvement greater than 0.5% (p > 0.05). Following a tapering period incorporating sleep-enhancing interventions, no significant differences were observed between AF and F-OR swimmers in the magnitude of performance change or in the proportion of swimmers exhibiting a performance improvement greater than 0.5%.