2026-06-10T06:38:28Zhttps://uvadoc.uva.es/oai/request

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

Effects of 120 vs. 60 and 90 g/h carbohydrate intake during a trail marathon on neuromuscular function and high intensity run capacity recovery 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 2023-03-29T12:04:35Z 2023-03-29T12:04:35Z 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 SI