• Thomas Ewert, Heribert Limm, Tina Wessels, Berid Rackwitz, Katharina von Garnier, Robert Freumuth, and Gerold Stucki.
• Department of Physical Medicine and Rehabilitation, Ludwig-Maximilian University, Munich, Germany.
• PM R. 2009 Sep 1;1(9):798-808.

ObjectiveThe objective of this study was to examine whether a multimodal, secondary prevention program (MP) is superior to a general physical exercise program (EP) in influencing the process leading to chronic low back pain (LBP) in nurses with a history of back pain.DesignThe study was conducted as a randomized controlled parallel-group trial.SettingThe interventions were performed in a single center at the Department of Physical and Rehabilitation Medicine at the University of Munich in Germany.ParticipantsA total of 235 nurses from 14 nearby hospitals and nursing homes who experienced at least one episode of back pain during the previous 2 years were invited into the study. Of these, 183 nurses were enrolled and 169 (83 in the MP and 86 in the EP) qualified for the intent-to-treat analysis.InterventionsThe EP consisted of 11 group sessions, each lasting 1 hour. After introductory sessions, subsequent sessions included general physical strengthening and stretching exercises as well as instructions for a home-training program. The MP consisted of 17 group sessions of 1.75 hours and one individual session of 45 minutes. In addition to the full EP, the MP included 5 psychological units, 7 segmental stabilization exercises units, and 8 ergonomic and workplace-specific units.Main Outcome MeasurementsThe primary study end-point variable was pain interference, and the secondary study end-point variables were pain intensity and functioning as measured with the West Haven-Yale Multidimensional Pain Inventory and the Short Form-36, respectively. These study end-point variables were defined a priori.ResultsThere was no statistically significant difference between the 2 groups. Small-to-moderate effects were observed in both intervention programs across all study end-point variables. For pain interference, the effect size at 12 months after intervention was 0.58 in the MP and 0.47 in the EP.ConclusionsA multimodal program is not superior to a general exercise program in influencing the process leading to chronic LBP in a population of nurses with a history of pain. The most likely explanation is a common psychological mechanism leading to improved pain interference that is irrespective of the program used. Considering the lower resources of the general exercise program, the expense for a multimodal program is not justified for the secondary prevention of LBP and disability.

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