title: Jump performance and augmented feedback: immediate benefits and long-term training effects.
abstract: Drop jumps and their adaptations to training have been extensively investigated. However, the influence of augmented feedback (aF) on stretch-shortening cycle (SSC) was not scrutinized so far despite the well-known positive effects of aF on motor performance and motor learning. The aim of the present study was therefore to investigate the effects of aF by evaluating immediate within-session effects and long-term adaptations. 34 participants were assigned to three groups that trained drop jumps with different relative frequencies of aF about their jump height: 100%, 50%, or 0%. A significant within-session effect of aF on jump height was observed before and also after the training period (pre: +4.6%; post: +2.6%). In the long-term (comparing pre- to post-measurement), the 100% group showed the greatest increase in jump height (+14%), followed by the 50% (+10%) and the 0% group (+6%). The importance of aF on drop jumps is therefore twofold: (i) to immediately increase jump performance and (ii) to improve long-term training efficacy. In contrast to the proposition of the guidance hypothesis, high frequency of aF seems to be beneficial when maximizing SSC-performance. As jump height cannot be quantified without objective technical measures it is recommended to include them into daily training.
authors.affiliation: Movement and Sport Science, Department of Medicine, University of Fribourg, Switzerland. Electronic address: martin.keller@unifr.ch.
authors.forename: Martin
authors.initials: M
authors.lastname: Keller
authors.affiliation: Department of Sport Science, University of Freiburg, Freiburg, Germany.
authors.forename: Benedikt
authors.initials: B
authors.lastname: Lauber
authors.affiliation: Department of Sport Science, University of Freiburg, Freiburg, Germany.
authors.forename: Dominic
authors.initials: D
authors.lastname: Gehring
authors.affiliation: Movement and Sport Science, Department of Medicine, University of Fribourg, Switzerland; Department of Sport Science, University of Freiburg, Freiburg, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Leukel
authors.affiliation: Movement and Sport Science, Department of Medicine, University of Fribourg, Switzerland.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Taube
mesh_terms: D000222:Adaptation, Physiological; D000293:Adolescent; D000328:Adult; D054874:Athletic Performance / Q000502:physiology*; D001696:Biomechanical Phenomena; D015444:Exercise; D005246:Feedback; D056228:Feedback, Sensory / Q000502:physiology*; D006801:Humans; D007858:Learning; D009042:Motivation; D009068:Movement / Q000502:physiology*; D010465:Perception; D011597:Psychomotor Performance / Q000502:physiology*; D013177:Sports; D055815:Young Adult
keywords: Augmented feedback; Drop jump; Knowledge of result; Stretch-shortening cycle; Training