Unexpected-Disturbance Program for Rehabilitation of High-Performance Athletes

in Journal of Sport Rehabilitation
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The Unexpected-Disturbance Program (UDP) promotes exercises in response to so-called involuntary short- to midlatency disturbances.


This study investigated the effectiveness of the UDP in the last 6 wk of rehabilitation.


Pre–post study with 2-tailed paired t tests for limited a priori comparisons to examine differences.


National Sports Institute of Malaysia.


24 Malaysian national athletes.


7 sessions/wk of 90 min with 3 sessions allocated for 5 or 6 UDP exercises.

Main Outcomes:

Significant improvements for men and women were noted. Tests included 20-m sprint, 1-repetition-maximum single-leg press, standing long jump, single-leg sway, and a psychological questionnaire.


For men and women, respectively, average strength improvements of 22% (d = 0.96) and 29% (d = 1.05), sprint time of 3% (d = 1.06) and 4% (d = 0.58), and distance jumped of 4% (d = 0.59) and 6% (d = 0.47) were noted. In addition, athletes reported improved perceived confidence in their abilities. All athletes improved in each functional test except for long jump in 2 of the athletes. Mediolateral sway decreased in 18 of the 22 athletes for the injured limb.


The prevention training with UDP resulted in improved conditioning and seems to decrease mediolateral sway.

Teichmann is with the Dept of Sport Therapy; Suwarganda and Wilson, the Dept of Biomechanics; Yeo, the Dept of Research; and Aziz is CEO, National Sports Institute of Malaysia, Bukit Jalil, Malaysia. Lendewig is with the National Sports Inst of Malaysia. Schmidtbleicher is with Dept of Sport Science, Johann Wolfgang Goethe University, Frankfurt, Germany.

Address author correspondence to Dietmar Schmidtbleicher at schmidtbleicher@sport.uni-frankfurt.de.