Now showing items 1-15 of 15

    • Attività fisica ed idratazione: quando l’acqua non basta 

      Aragón Vargas, Luis Fernando (2005-10)
      During sports training and games, thermoregulation may be a challenge when environmental conditions are hot and/or humid. In addition, limited opportunities to drink may promote dehydration and exacerbate the thermoregulatory ...
    • Cerveza como rehidratante 

      Aragón Vargas, Luis Fernando (2014-10-10)
      Entrevista televisiva del Doctor Gustavo Gutierrez Espeleta en el programa ConCiencia (Canal UCR) a los investigadores Rebeca Flores y Luis Fernando Aragón sobre los resultados de su imvestigación sobre la cerveza como ...
    • Cómo distinguir entre la ciencia y la especulación en la nutrición deportiva 

      Aragón Vargas, Luis Fernando (1998)
      Se analiza cómo muchas personas son presa de su propio deseo de lograr resultados sin hacer el esfuerzo correspondiente. Además, se presentan sugerencias sobre cómo discernir la afirmaciones falsas de las que quizás sí ...
    • Efeitos da Desidratação no Rendimento Físico e na Saúde 

      Aragón Vargas, Luis Fernando (2001)
      As pessoas fisicamente ativas devem prestar atenção a sua hidratação. A desidratação tem efeitos negativos sobre o funcionamento do corpo, que vão desde pequenas diminuições no rendimento físico, até problemas por calor ...
    • Effects of fasting on endurance exercise 

      Aragón Vargas, Luis Fernando (1993)
      Early studies agree that fasting is detrimental to overall physical performance and to endurance performance in humans; however, a study in rats reporte an ergogenic effect where time to exhaustion was increased by a ...
    • Effects of fasting on endurance exercise in adult males: preliminary evidence for a "nocebo" effect 

      Beltranena Falla de Enríquez, María Mercedes; Aragón Vargas, Luis Fernando; Salazar Rojas, Wálter (1998)
      The literature has repeatedly reported a negative effect of fasting on endurance exercise in humans. The goal of this study was to test the hypothesis that endurance performance is susceptible to a “negative placebo” or ...
    • Evaluación del efecto de la espirulina para reducción de peso en mujeres universitarias 

      Beltranena Falla de Enríquez, María Mercedes; Aragón Vargas, Luis Fernando; Salazar Rojas, Wálter (1996)
      Este estudio evaluó el efecto del alga espirulina en el tratamiento de reducción de peso en 15 mujeres universitarias, grupo control (n=7) y grupo experimental (n=8). El tratamiento consistió en tres tomas de una cápsula ...
    • Evaluation Of A Real Life Desire-to-drink Scale 

      Capitán Jiménez, Catalina; Tenorio Fallas, Álvaro; Aragón Vargas, Luis Fernando (2016)
      PURPOSE:to determine the strength of the association between the amount of fluid people say they want to drink after exercise and the actual amount of fluid intake within 30 min post-exercise.
    • Hidratación para la actividad física 

      Aragón Vargas, Luis Fernando (Memoria del III Simposio en Ciencias del Ejercicio y la Salud, 1996-10)
      El conocimiento científico sobre este tema ha evolucionado considerablemente desde la publicación de este manuscrito en 1996; por ejemplo, en ese tiempo se le prestaba poca o ninguna atención a las complicaciones de la ...
    • Incomplete warm-climate post-exercise rehydration with water, coconut water, or a sports drink 

      Madriz Dávila, Karol; Aragón Vargas, Luis Fernando (Medicine & Science in Sports & Exercise, 32(5s), 238., 2011-10-01)
      It is common to find mild to serious dehydration during exercise in hot, humid conditions. To restore euhydration, the literature shows that a fluid volume larger than sweat loss should be ingested post-exercise; ingestion ...
    • Influence of Mild Dehydration on Exercise Performance 

      Aragón Vargas, Luis Fernando (2001-12)
      This presentation summarizes some initial evidence for an impairment of exercise performance due to mild dehydration. An attempt is made at defining mild dehydration, and preliminary hypotheses are presented.
    • Metabolic and Performance Responses to Carbohydrate Intake During Exercise 

      Aragón Vargas, Luis Fernando (2000-09)
      During exercise, an adequate supply of substrates is required for the continuing resynthesis of ATP in working muscles. Muscle fibers have limited stores of creatine phosphate, glycogen, and triglycerides and so must also ...
    • Motorcycle Enduro Race in Heat: Fluid Balance and Thermoregulation 

      Javornik Krope, Ricardo Martín; Aragón Vargas, Luis Fernando; García, Pedro Reinaldo (2007-05)
      PURPOSE: To evaluate the hydration status, fluid balance and core temperature changes during an enduro motorcycle race. METHODS: 12 professional male enduro drivers gave written informed consent to participate. Data were ...
    • New developments in sports nutrition: introduction and historical overview 

      Aragón Vargas, Luis Fernando (2003)
      The science of sports nutrition is quickly growing to maturity. The last two decades have seen the publication of the International Journal of Sports Nutrition and many sound textbooks such as those edited by Ron Maughan ...
    • No effect of carbohydrate feeding on 16 km cycling time trial performance 

      Jeukendrup, Asker E.; Hopkins, Shaun; Aragón Vargas, Luis Fernando; Hulston, Carl (2008-11-24)
      The aim of this study is to investigate the effects of CHO ingestion during high intensity exercise performance lasting approximately 25 min. Twelve endurance trained male cyclists (age 19–41 years; body mass 73.2 ± ...