Effects of 120 vs. 60 and 90 g/h Carbohydrate Intake during a Trail Marathon on Neuromuscular Function and High Intensity Run Capacity Recovery

Autor: Soledad Arribalzaga, Jesús Seco-Calvo, Juan Mielgo-Ayuso, Aitor Viribay, Aritz Urdampilleta, Arkaitz Castañeda-Babarro
Rok vydání: 2020
Předmět:
Male
Time Factors
2411.07 Fisiología de la Digestión
carbohydrates
Marathon Running
Muscle damage
gut training
Eating
0302 clinical medicine
Medicine
Nutritional Physiological Phenomena
Nutrition and Dietetics
High intensity
2410.10 Fisiología Humana
Deporte
Neuromuscular fatigue
Muscle Fatigue
Recuperación
lcsh:Nutrition. Foods and food supply
performance
Adult
Carbohidratos
Repetition maximum
030209 endocrinology & metabolism
lcsh:TX341-641
Athletic Performance
Fisiología
Article
resistance
03 medical and health sciences
recovery
Animal science
gastrointestinal discomfort
Resistencia
Dietary Carbohydrates
Humans
High group
Muscle
Skeletal
Carbohydrate intake
Fatiga
business.industry
030229 sport sciences
Recovery of Function
Athletes
Mann–Whitney U test
fatigue
business
human activities
absorption
Jump test
Food Science
Zdroj: Nutrients
Nutrients, Vol 12, Iss 2094, p 2094 (2020)
Volume 12
Issue 7
ISSN: 2072-6643
Popis: 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.
Databáze: OpenAIRE
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