Gastrointestinal symptoms and nutritional intake among participants in a non-professional cycling event.

Purpose: To determine the occurrence of gastrointestinal (GI) symptoms in different settings among cyclists participating in a non-professional cycling event. The nutritional intake during the event and the association between GI symptoms and both nutritional and non-nutritional factors were also analyzed.

Methods: A descriptive correlational study was performed among participants in the 2023 'Mallorca 312-Milestone Series' cycling event.

Effects of Caffeine Supplementation on Plasma and Blood Mononuclear Cell Interleukin-10 Levels After Exercise.

This study compared the response of interleukin (IL)-10, and also of IL-6 and IL-12 p40, to exercise and caffeine supplementation between plasma and blood mononuclear cells (BMNCs). Participants in the study (n = 28) were randomly allocated in a double-blind fashion to either caffeine (n = 14) or placebo (n = 14) treatments. One hour before completing a 15-km run competition, athletes took 6 mg/kg body mass of caffeine or a placebo.

Vitamin C supplementation does not influence plasma and blood mononuclear cell IL-6 and IL-10 levels after exercise.

The aim of this study was to determine whether the highest vitamin C supplementation associated with complete bioavailability influences the plasma and blood mononuclear cell IL-6 and IL-10 response to exercise. A double-blinded study of supplementation with vitamin C was performed. After 15 days of supplementation with vitamin C (500 mg · day(-1), n = 16) or a placebo (n = 15), participants in the study completed a 15-km run competition.

Changes in salivary hormones, immunoglobulin A, and C-reactive protein in response to ultra-endurance exercises.

The aim of the study was to determine the influence of the exercise duration on the changes in salivary stress markers in response to ultra-endurance exercises. The study was developed in 2 ultra-endurance exercise tests: the Ultra-trail Serra de Tramuntana (UTST), a 104 km ultra-marathon competition (n = 64) and the 25 km Cabrera Open Water Race (COWR) (n = 43). Participants in the COWR completed the 25 km at a constant pace of 3 km/h (3K group) or 2.

Effects of caffeine on the inflammatory response induced by a 15-km run competition.

Purpose: The objective of this study is as follows: 1) to determine the effects of caffeine supplementation on the inflammatory response (IL-6 and IL-10 levels and leukocyte numbers) induced by a 15-km run competition and 2) to examine the effect of caffeine supplementation on the energetic metabolites as well as on the exercise-induced oxidative stress.

Methods: A double-blinded study of supplementation with caffeine was performed. Athletes participating in the study (n = 33) completed a 15-km run competition.

Characterization of entropy measures against data loss: application to EEG records.

This study is aimed at characterizing three signal entropy measures, Approximate Entropy (ApEn), Sample Entropy (SampEn) and Multiscale Entropy (MSE) over real EEG signals when a number of samples are randomly lost due to, for example, wireless data transmission. The experimental EEG database comprises two main signal groups: control EEGs and epileptic EEGs. Results show that both SampEn and ApEn enable a clear distinction between control and epileptic signals, but SampEn shows a more robust performance over a wide range of sample loss ratios.