Compressive spectrum sensing for cognitive radio networks

Abstract

Ghoul, N, Tabben, M, Miarka, B, Tourny, C, Chamari, K, and Coquart, J. Mixed martial arts induces significant fatigue and muscle damage up to 24 hours post-combat. J Strength Cond Res 33(6): 1570-1579, 2019-This study investigates the physiological/physical responses to a simulated mixed martial arts (MMA) competition over 24 hours. Twelve fighters performed a simulated MMA competition, consisting of three 5-minute MMA matches. Physiological/physical data were assessed before (Trest), directly after round 1 (Trd1), round 2 (Trd2) and round 3 (Trd3), and then 30 minutes (Trecovery30min) and 24 hours (Trecovery24h) post competition. Heart rate (HR), rating of perceived exertion (RPE), and blood lactate concentration ([La]) were assessed at Trest, Trd1, Trd2, and Trd3. Biological data were collected at Trest, Trd3, Trecovery30min, and Trecovery24h. Physical tests were performed at Trest, Trecovery30min, and Trecovery24h. HR, RPE, and [La] were high during competition. Leukocytes, hemoglobin, total protein, and glycemia were increased at Trd3 compared with all other time points (p ≤ 0.05). Cortisol was increased at Trd3 compared with Trest and Trecovery24h (p ≤ 0.05). Testosterone was higher at Trd3 and Trecovery30min than Trest (p < 0.001). Higher values of uric acid were noted during recovery periods (p < 0.001). Lactate dehydrogenase was lower at Trest compared with Trd3, Trecovery30min, and Trecovery24h (p ≤ 0.05). Countermovement jump was higher at Trest than Trecovery30min (p = 0.020). Consequently, MMA is a high-intensity intermittent combat sport that induces significant fatigue and muscle damage, both of which are still present at 24 hours post competition.