2026-04-27T12:56:04Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/590522023-03-29T19:02:12Zcom_10324_1134com_10324_931com_10324_894col_10324_1213

Urdampilleta, Aritz Arribalzaga, Soledad Viribay, Aitor Castañeda Babarro, Arkaitz Seco Calvo, Jesús Mielgo Ayuso, Juan Francisco Fisiología Deporte Producción Científica Background: Current carbohydrate (CHO) intake recommendations for ultra-trail activities lasting more than 2.5 h is 90 g/h. However, the benefits of ingesting 120 g/h during a mountain marathon in terms of post-exercise muscle damage have been recently demonstrated. Therefore, the aim of this study was to analyze and compare the effects of 120 g/h CHO intake with the recommendations (90 g/h) and the usual intake for ultra-endurance athletes (60 g/h) during a mountain marathon on internal exercise load, and post-exercise neuromuscular function and recovery of high intensity run capacity. Methods: Twenty-six elite trail-runners were randomly distributed into three groups: LOW (60 g/h), MED (90 g/h) and HIGH (120 g/h), according to CHO intake during a 4000-m cumulative slope mountain marathon. Runners were measured using the Abalakov Jump test, a maximum a half-squat test and an aerobic power-capacity test at baseline (T1) and 24 h after completing the race (T2). Results: Changes in Abalakov jump time (ABKJT), Abalakov jump height (ABKH), half-squat test 1 repetition maximum (HST1RM) between T1 and T2 showed significant differences by Wilcoxon signed rank test only in LOW and MED (p < 0.05), but not in the HIGH group (p > 0.05). Internal load was significantly lower in the HIGH group (p = 0.017) regarding LOW and MED by Mann Whitney u test. A significantly lower change during the study in ABKJT (p = 0.038), ABKH (p = 0.038) HST1RM (p = 0.041) and in terms of fatigue (p = 0.018) and lactate (p = 0.012) within the aerobic power-capacity test was presented in HIGH relative to LOW and MED. Conclusions: 120 g/h CHO intake during a mountain marathon might limit neuromuscular fatigue and improve recovery of high intensity run capacity 24 h after a physiologically challenging event when compared to 90 g/h and 60 g/h 2023-03-29 2023-03-29 2020 info:eu-repo/semantics/article Nutrients, 2020, vol. 12, n. 7, 2094 https://uvadoc.uva.es/handle/10324/59052 10.3390/nu12072094 2094 7 Nutrients 12 2072-6643 eng https://www.mdpi.com/2072-6643/12/7/2094 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ © 2020 The Authors Atribución 4.0 Internacional MDPI