An interventional study of Dual-task training and Single task training in Anterior Cruciate Ligament Reconstruction Rehabilitation, sponsored by Michelle C. Haas. Terminated at 2 sites in Switzerland. Open to participants aged 18 Years to 40 Years. Per ClinicalTrials.gov, last updated 2025-12-08.
Sponsored by Michelle C. Haas · Not applicable, Interventional, and Other
The goal of this clinical trial is to investigate changes in cognitive and physical performance after 10 weeks of dual or single task training in anterior cruciate ligament (ACL) reconstructed individuals. The main questions it aims to answer are:
Researchers will compare a combined dual-task training (combined physical and cognitive training) to a single task training (physical and cognitive training separately) to see if there are changes on cognitive performance depending on the training type.
Participants will:
512 studies on the registry are indexed under Anterior Cruciate Ligament Injuries; 164 are open to participants now.
This study's enrollment of 2 is below the median of 56 across 373 interventional studies indexed under Anterior Cruciate Ligament Injuries.
Browse Anterior Cruciate Ligament Injuries studies →This is the only study on the registry with Michelle C. Haas as lead sponsor.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
Other: Dual-task training
Other: Single task training
Combined simultaneous physical and cognitive training in an immersive environment
Sequential cognitive and then physical training
Interference
Measured by the difference in reaction time of congruent and incongruent stimuli of the Flanker task.
Time frame: Baseline, after 5 weeks of training, after 10 weeks of training
Response inhibition
Measured by the accuracy of Go/No-Go-stimuli
Time frame: Baseline, after 5 weeks of training, after 10 weeks of training
Jumping performance - contact time
Contact time during jumping on force plates.
Time frame: Baseline and after 10 weeks of training
Jumping performance - peak force
Peak force during jumping on force plates.
Time frame: Baseline and after 10 weeks of training
Strength
Peak force of hamstring, quadriceps, hip abduction, and hip adduction
Time frame: Baseline and after 10 weeks of training
Intrinsic motivation
German version of the short scale for intrinsic motivation (Kurzskala Intrinsische Motivation). For each of the 12 items there is a 5-point Likert-Scale resulting in values of 0-4. Therefore, the total score ranges from 0 to 48. The higher the score, the higher the intrinsic motivation.
Time frame: At the end of each training session (2x/week for 10 weeks)
Kinematics and kinetics of the lower extremities
Hip, knee, and ankle angles and moments and ground reaction forces
Time frame: During dual-task training in an immersive environment
Kinematics and kinetics of the lower extremities
Ground reaction forces, angles and moments of hip, knee, and ankle during functional tasks
Time frame: Baseline and after 10 weeks of training
Kujala
The German version of the 13-item Kujala questionnaire will be used for assessment of anterior knee pain. Questions involve ability to do several activities and symptoms of patients. All scores of the 13 items are summed up to give a total score ranging from 0 to 100. High scores indicate a good outcome.
Time frame: Baseline and after 10 weeks of training
ACL-Return to Sport after Injury Scale
The German version of the ACL-RSI will be used. The ACL-Return to Sport after Injury Scales includes 12 items which are each answered on a Likert-scale from 0 to 100. For the total score, individual scores of each item are added and subsequently divided by the numer of questions. Hence total score ranges from 0 to 120. High scores indicate a positive psychological evaluation.
Time frame: Baseline and after 10 weeks of training
Tegner Activity Scale
The German version of the Tegner Activity Scale including 11 different stages will be used. Each stage includes activities in sports and work of patients after ACL injury. Stages range from 0 to 10.
Time frame: Baseline and after 10 weeks of training
Socio-demographic data
Sex, age, time since ACL reconstruction, injury history
Time frame: Baseline
Subjective Cognitive Load
Measured by the NASA-TLX questionnaire
Time frame: At the end of each training session (2x/week for 10 weeks)
Plan to share: Yes — Individual participant data will be shared if ethically and legally possible.
No publications or documents are linked to this record.
This study is terminated, as verified in Dec 2025. You cannot join it, but the record below documents what was studied.
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