Purpose The purpose of this systematic literature reviewwas to evaluate strength training protocol documentationduring rehabilitation after anterior cruciate ligament (ACL)reconstruction. The aim was further to present recommendationsconcerning what components (i.e. methods,principles and training variables) could be considered vitalto document when it comes to strength training for researchpurposes after ACL reconstruction.Methods A search of the PUBMED/MEDLINE, CINAHLand SportDiscus databases was made of relevant literaturerelating to strength training after ACL reconstruction. Thedatabase search was based on relevant medical subjectheadings terms (strength/resistance/weight training, anteriorcruciate ligament reconstruction/rehabilitation). Theliterature was reviewed regarding the way methods andvariables were documented in strength training protocolsduring rehabilitation after ACL reconstruction in peerreviewedoriginal prospective articles.Results The systematic literature search identified 139citations published between January 1983 and May 2012.Six studies contained a strength training programme-part ofthe rehabilitation protocol after ACL reconstruction thatmet the inclusion criteria. Basic information (i.e. trainingfrequency, intensity, volume, progression or the duration ofthe training period) regarding the strength training protocolsused during rehabilitation after ACL reconstruction was notdocumented in full in four of the studies.Conclusion The results clearly indicate the need of amore standardised and detailed way of documentingstrength training for research purposes after ACL reconstructionin order to increase the value of future studies onthis subject. This review gives recommendations onstrength training protocol documentation after ACLreconstruction to facilitate this goal.