Conclusions Our results demonstrate that the existence of a relationship between training load and injury continues to be well supported in the literature and is strongest for subjective internal training load .
The directionality of this relationship appears to depend on the type and timeframe of load measured
Background The relationship between training load and musculoskeletal injury is a rapidly advancing area of research in need of an up date d systematic review .
Does direction of results of abstracts submitted to scientific conferences on drug addiction predict full publication?
Background Data from scientific literature show that about 63 % of abstract s presented at biomedical conferences will be published in full . Some studies have indicated that full publication is associated with the direction of results ( publication bias ) . No study has looked into the occurrence of publication bias in the field of addiction . Objectives To investigate whether the significance or direction of results of abstract s presented at the major international scientific conference on addiction is associated with full publication Methods The conference proceedings of the US Annual Meeting of the College on Problems of Drug Dependence ( CPDD ) , were h and search ed for abstract s of r and omized controlled trials and controlled clinical trials that evaluated interventions for prevention , rehabilitation and treatment of drug addiction in humans ( years search ed 1993–2002 ) . Data regarding the study design s and outcomes reported were extracted . Subsequent publication in peer review ed journals was search ed in MEDLINE and EMBASE data bases , as of March 2006 . Results Out of 5919 abstract s presented , 581 met the inclusion criteria ; 359 ( 62 % ) conference abstract s had been published in a broad variety of peer review ed journals ( average time of publication 2.6 years , SD + /- 1.78 ) . The proportion of published studies was almost the same for r and omized controlled trials ( 62.4 % ) and controlled clinical trials ( 59.5 % ) while studies that reported positive results were significantly more likely to be published ( 74.5 % ) than those that did not report statistical results ( 60.9 % . ) , negative or null results ( 47.1 % ) and no results ( 38.6 % ) , Abstract s reporting positive results had a significantly higher probability of being published in full , while abstract s reporting null or negative results were half as likely to be published compared with positive ones ( HR = 0.48 ; 95%CI 0.30–0.74 ) Conclusion Clinical trials were the minority of abstract s presented at the CPDD ; we found evidence of possible publication bias in the field of addiction , with negative or null results having half the likelihood of being published than positive ones
Conclusions Our results demonstrate that the existence of a relationship between training load and injury continues to be well supported in the literature and is strongest for subjective internal training load .
The directionality of this relationship appears to depend on the type and timeframe of load measured
Background The relationship between training load and musculoskeletal injury is a rapidly advancing area of research in need of an up date d systematic review .