Rispondi alla discussione

JavaScript è disabilitato. Per una migliore esperienza di navigazione attivalo nel tuo programma o nella tua app per navigare prima di procedere.

Testo: <blockquote data-quote="WNC2" data-source="post: 7293889" data-attributes="member: 12902"><p><h2>ABSTRACT</h2><h2>Background</h2><p>The effects of pre-sleep protein supplementation on endurance athletes remain unclear, particularly whether its potential benefits are due to the timing of protein intake or solely to an increased total protein intake. We assessed the effects of pre-sleep protein supplementation in professional cyclists during a training camp accounting for the influence of protein timing.</p><h2>Methods</h2><p>Twenty-four professional U23 cyclists (19 ± 1 years, peak oxygen uptake: 79.8 ± 4.9 ml/kg/min) participated in a six-day training camp. Participants were randomized to consume a protein supplement (40 g of casein) before sleep (n = 8) or in the afternoon (n = 8), or an isoenergetic placebo (40 g of carbohydrates) before sleep (n = 8). Indicators of fatigue/recovery (Hooper index, Recovery–Stress Questionnaire for Athletes, countermovement jump), body composition, and performance (1-, 5-, and 20-minute time trials, as well as the estimated critical power) were assessed as study outcomes.</p><p></p><h2>Results</h2><p>The training camp resulted in a significant (p < 0.001) increase in training loads (<em>e.g</em>. training stress score of 659 ± 122 per week during the preceding month versus 1207 ± 122 during the training camp), which induced an increase in fatigue indicators (e.g. time effect for Hooper index p < 0.001) and a decrease in performance (e.g. time effect for critical power p = 0.002). Protein intake was very high in all the participants (>2.5 g/kg on average), with significantly higher levels found in the two protein supplement groups compared to the placebo group (p < 0.001). No significant between-group differences were found for any of the analyzed outcomes (all p > 0.05).</p><h2>Conclusions</h2><p><strong><span style="color: rgb(209, 72, 65)">Protein supplementation, whether administered before sleep or earlier in the day, exerts no beneficial effects during a short-term strenuous training period in professional cyclists, who naturally consume a high-protein diet.</span></strong></p><p></p><p><span style="color: null">FONTE:</span></p><p><span style="color: null">[URL unfurl="true"]https://www.tandfonline.com/doi/full/10.1080/15502783.2023.2166366[/URL]</span></p></blockquote><p></p>

Verifica Anti SPAM

Alto Basso

Cerca

Cerca

Rispondi alla discussione