Relaxation techniques in sports: A systematic review on acute effects on performance

This review showed that biofeedback and hypnosis can positively influence performance throughout different outcome variables consistently. On the contrary, other techniques that were proven effective in clinical environments did not show consistent results. However, results have to be treated with caution because of considerable lack of quality of some of the trials. Future studies need to consider the methodological flaws as well as the highly individual nature of relaxation techniques.