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Hum Mov Sci. 2014 Aug;36:177-89. doi: 10.1016/j.humov.2014.04.007. Epub 2014 May 27.

Jump performance and augmented feedback: immediate benefits and long-term training effects.

Author information

1
Movement and Sport Science, Department of Medicine, University of Fribourg, Switzerland. Electronic address: martin.keller@unifr.ch.
2
Department of Sport Science, University of Freiburg, Freiburg, Germany.
3
Movement and Sport Science, Department of Medicine, University of Fribourg, Switzerland; Department of Sport Science, University of Freiburg, Freiburg, Germany.
4
Movement and Sport Science, Department of Medicine, University of Fribourg, Switzerland.

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.

KEYWORDS:

Augmented feedback; Drop jump; Knowledge of result; Stretch-shortening cycle; Training

PMID:
24875045
DOI:
10.1016/j.humov.2014.04.007
[Indexed for MEDLINE]

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