***TASK***
the task is to simplify the input abstract of a biomedical literature

***INPUT***
the input is the abstract of a biomedical literature

***OUTPUT***
the output is the simplified abstract for the input abstract of a biomedical literature

***DOCUMENTATION***

***EXAMPLES***

Input: We included 13 articles reporting on nine studies with nine interventions. Four studies with 407 participants evaluated post-treatment programmes and five studies with 1113 participants evaluated exercise as a treatment modality. Four studies had a low risk of bias, one study a high risk and the remainder an unclear risk of bias. We found moderate quality evidence that post-treatment exercises were more effective than no intervention for reducing the rate of recurrences at one year (Rate Ratio 0.50; 95% Confidence Interval 0.34 to 0.73). There was moderate quality evidence that the number of recurrences was significantly reduced in two studies (Mean Difference -0.35; 95% CI -0.60 to -0.10) at one-half to two years follow-up. There was very low quality evidence that the days on sick leave were reduced by post-treatment exercises (Mean Difference -4.37; 95% CI -7.74 to -0.99) at one-half to two years follow-up. We found conflicting evidence for the effectiveness of exercise treatment in reducing the number of recurrences or the recurrence rate. There is moderate quality evidence that post-treatment exercise programmes can prevent recurrences of back pain but conflicting evidence was found for treatment exercise. Studies into the validity of measurement of recurrences and the effectiveness of post-treatment exercise are needed.
Output:

There were nine studies with 1520 participants. There was moderate quality evidence that post-treatment exercises can reduce both the rate and the number of recurrences of back pain. However, the results of exercise treatment studies were conflicting. Adverse (side) effects of exercising were not mentioned in any of the studies. Limitations of this review include the difference in exercises across studies, thus making it difficult to specify the content of such a programme to prevent back pain recurrences.