Enhanced retention of drop vertical jump landing technique: A randomized controlled trial |
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| Affiliation: | 1. University of Groningen, University Medical Center Groningen, Center for Human Movement Sciences, Groningen, The Netherlands;2. School of Sport Studies, Hanze University, Groningen, The Netherlands;1. Division of Health, Engineering, Computing and Science, Te Huataki Waiora School of Health, Adams Centre for High Performance, University of Waikato, New Zealand;2. Department of Preventive and Social Medicine, University of Otago, New Zealand;1. Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, Palacky University Olomouc, třída Míru 117, 771 11 Olomouc, Czech Republic;2. Department of Social Sciences, Faculty of Sciences for Physical Activity and Sport, Technical University of Madrid, Campus Ciudad Universitaria, Martín Fierro 7, 28040 Madrid, Spain;3. Department of Kinesiology & Nutrition Sciences, University of Nevada, Las Vegas, 4505 Maryland Parkway, Las Vegas, NV 89154-3034, USA;1. Department of Kinesiology, University of Connecticut, USA;2. Department of Kinesiology, California State University, Fresno, USA;3. College of Medicine, Drexel University, USA;1. School of Public Health, Physiotherapy and Population Science, University College Dublin, Dublin, Ireland;2. Institute for Sport and Health, University College Dublin, Dublin, Ireland;3. Sport and Exercise Sciences Research Institute, Ulster Sports Academy, University of Ulster, Newtownabbey, Co. Antrim, Northern Ireland, United Kingdom;4. Department of Kinesiology, University of Virginia, Charlottesville, VA, United States;5. St. Vincent’s University Hospital, Dublin, Ireland |
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| Abstract: | External focus instructions have been shown to result in superior motor performance compared to internal focus instructions. Using an EF may help to optimize current anterior cruciate ligament (ACL) injury prevention programs. The purpose of the current study was to investigate the effects of instructions on landing technique and performance by comparing an external focus (EF), internal focus (IF), video (VI) and control (CTRL) group. Subjects (age 22.50 ± 1.62 years, height 179.70 ± 10.43 cm, mass 73.98 ± 12.68 kg) were randomly assigned to IF (n = 10), EF (n = 10), VI (n = 10) or CTRL group (n = 10). Landing was assessed from a drop vertical jump (DVJ) in five sessions: pretest, two training blocks (TR1 and TR2) and directly after the training sessions (post test) and retention test 1 week later. Group specific instructions were offered in TR1 and TR2. Landing technique was assessed with the Landing Error Scoring System (LESS) and jump height was taken as performance measure. The results show that males in the VI group and females both in the VI and EF groups significantly improved jump-landing technique. Retention was achieved and jump height was maintained for males in the VI group and females both in the VI and EF groups. It is therefore concluded that EF and VI instructions have great potential in ACL injury prevention. |
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| Keywords: | ACL injury Attentional focus Motor learning Jump landing performance Technique |
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