Abstract (eng)
It is well established in the literature that combined strength and power trainings have a high impact on various parts of the force-velocity curve and subsequently sports performance (Cormie et al., 2011). Especially the concept of complex training, where strength and power are combined in one training session has gained popularity in the last years (Hammami et al., 2016; Kobal et al., 2016; Ronnestad et al., 2008). However, the effectiveness of this training concept remain unclear. Therefore, we conducted a systematic review in four electronic databases (Pubmed, Web of Science, SportDiscus, CINHAL and Scopus). In total, 29 trials met the in- and exclusion criteria. The content of included studies (i.e.: subjects, training intervention, outcome measures, etc.) was critically analysed. Additionally, the methodological quality was assessed by the 11 item PEDro scale (Maher et al., 2003). Overall the quality of included trials was poor to fair (Foley et al., 2003). However, it seems that complex training is effective to improve jump, sprint and strength performance compared to no training (i.e.: control). The analysis revealed that complex training is similar effective as traditional training methods. To maximize the transfer to sports performance, literature suggests that training interventions should consist of movements similar to those used in competition. However, our findings are limited because of qualitative evaluation. A systematic review with meta-analysis should confirm these findings quantitively.