KMAN Publication Inc. International Journal of Sport Studies for Health 2588-5782 4 Serial Number 9 2022 03 02 Effects of Repeated Low-dose Caffeine Ingestion During a Night of Total Sleep Deprivation on Physical Performance and Psychological State in Young Recreational Runners Effects of Repeated Low-dose Caffeine Ingestion During a Night of Total Sleep Deprivation on Physical Performance and Psychological State in Young Recreational Runners 39 42 10.61838/kman.intjssh.4.1.8 EN Journal Article <article> <div class="mb content text-indent"> <h4 class="font-main d-inline font-weight-bold">Background:</h4>  Caffeine is frequently consumed by athletes to maintain alertness in conditions of sleep loss. However, the effect of caffeine ingestion during total sleep deprivation during aerobic exercise remains questionable.</div> </article> <article> <div class="mb content text-indent"> <h4 class="font-main d-inline font-weight-bold">Objectives:</h4>  The present study aimed to assess the effects of repeated intake of low-dose caffeine during a night of total sleep deprivation on endurance performance and psychological states.</div> </article> <article> <div class="mb content text-indent"> <h4 class="font-main d-inline font-weight-bold">Methods:</h4>  Twelve recreational runners performed four test sessions in a double-blind randomized order after a placebo or 6 mg/kg of caffeine ingestion after a baseline night (BN) or three doses of 2 mg/kg of caffeine during a night of total sleep deprivation (TSD). At each session, they completed an exhaustive run around a 400 m athletics track and performed the Feeling Scale test. ANOVA with repeated measures followed by paired t-tests was used to analyze the data.</div> </article> <article> <div class="mb content text-indent"> <h4 class="font-main d-inline font-weight-bold">Results:</h4>  In comparison with BN, the TSD condition significantly impaired running performance (P < 0.001). On the contrary, caffeine administration improved endurance running performance (P < 0.001) and increased feeling of well-being (P < 0.05) after TSD night as compared to placebo.</div> </article> <article> <div class="mb content text-indent"> <h4 class="font-main d-inline font-weight-bold">Conclusions:</h4>  Repeated ingestion of low-dose caffeine is an effective way to mitigate the negative effects of total sleep deprivation on endurance performance and mood states.</div> </article>

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