Browsing by Subject "Fadiga"

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    Creatine monohydrate ingestion-related placebo e effects on brief anaerobic exercise performance. A laboratory investigation
    (Murcia: Servicio de Publicaciones de la Universidad de Murcia, 2017) Szabó, Attila; Szemerszky, R.; Dömötör, Z.; De la Vega, R.; Koteles, Ferenc
    ABSTRACT: People’s thoughts infuence their action that led researchers to inves- tigate the placebo efect in exercise performance. In the current study the pla- cebo efects of creatine monohydrate on a one-minute anaerobic step-exercise performance were examined in a double blind laboratory inquiry. University students (n = 79, 64.5% women) were randomly assigned to one of three expe- rimental conditions: 1) intervention (ingestion of 80 mg/kg dissolved creatine monohydrate, n = 26), 2) placebo (ingestion of dissolved corn starch, thought to be creatine, n = 26), and 3) no-intervention control (ingestion of drinking water only, n = 27). After a baseline measurement, participants have consumed their respective drinks and 40 minutes later the 1-minute exercise was repeated. While analysis of variance revealed no group level diferences in actual and perceived change in performance, the latter was linked to participants’ expec- tations regarding performance on the second exercise test in the correlation analysis. Two thirds of the participants in the current study believed that their performance would improve in the actual test-exercise. However, these expec- tations were not linked to creatine ingestion. Tese fndings suggest that (1) a single dose of creatine monohydrate does not afect anaerobic performance, (2) in low-challenge and low-subjective-importance “artifcial” research condi- tions sufcient expectations could not be evoked, and probably due to the lack of creatine-related expectations the placebo efects did not emerge.