Fitness- and Health-related Effects of a Sports Injury Prevention Program in Competitive Alpine Skiers
NCT ID: NCT04021576
Last Updated: 2023-03-03
Study Results
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Basic Information
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COMPLETED
NA
129 participants
INTERVENTIONAL
2017-10-01
2022-02-28
Brief Summary
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Background: Competitive alpine skiing has a relatively high injury risk. 60% of all athletes suffer from a severe knee injury in the early stages of their career, and 20% struggle with recurrent overuse problems of the knee and lower back.
Research Aims: (1) to investigate the effects of a 12-month sports injury prevention program on training attitudes, eccentric hamstring strength, leg axis-/hip-/core-stability and general fitness in competitive alpine skiers; (2) to assess the effectiveness the aforementioned prevention program to lower the occurring health problems in competitive alpine skiers; (3) to identify different pain conditions (knee, back, no pain) based on data measured with smartphones; and (4) to investigate the agreement of self-reported questionnaire data with measured smartphone data and pain as an affecting factor.
Methods: 12-month intervention a sports injury prevention program, a prospective health- and training/activity-monitoring, as well as assessments of eccentric hamstring strength, leg axis/hip/core stability and general fitness at baseline and follow-up.
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Detailed Description
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1. to investigate the effects of a sports injury prevention program on train-ing attitudes, eccentric hamstring strength, leg axis-/hip-/core-stability and general fitness in competitive alpine skiers;
2. to assess the effectiveness the prevention program to lower the occur-ring health problems (i.e. traumatic injuries, overuse injuries and illnesses) in competitive alpine skiers.
The secondary objectives of this study are:
3. to investigate the agreement between self-reported questionnaire data with unobtrusively measured smartphone data (i.e. sensor-based activity data) to monitor the prevention program;
4. to identify athletes at risk for developing pain and injury based on digitally acquired data (questionnaires and activity sensor data).
The primary study outcomes are the changes in training attitudes, maximal eccentric hamstring strength, leg axis-/hip-/core-stability, general fitness-related factors and the occurring health problems in competitive youth alpine skiers over a 12-month intervention period. These outcomes are assessed by established methods of strength testing, neuromuscular screening, and load- and health-monitoring.
The secondary outcome is a smartphone enabled training and injury prevention program for skiing athletes.
Study design: Medical Training Therapy (MTT) Intervention with historical control Group
Methods and procedures:
Fitness- and health-related factors are assessed before and after a 12-month observational period and before and after a 12-month preventative training intervention period.
Maximal eccentric hamstring strength is tested by using the NordBord (Inc. VALD Performance, AU).
Leg axis-/hip-/core-stability related measures are assessed by biomechani-cal measurement technologies, such as Vicon Vero (Inc. Vicon Motion Sys-tems Ltd, UK), mobile 2D force plates (MLD, Inc. SP Sportdiagnosegeräte GmbH, AT), mobile 3D force plates (Inc. Kistler Group, SUI) and surface electromyography (EMG) (aktos, Inc. Myon AG, SUI).
General fitness-related factors are quantified by the Swiss-Ski Power Test (incl. the tasks "swiss cross", "push up", "5-jump", "standing long jump", "twist test", "obstacle course", "high box jump" and "12' run").
The athletes' training loads/activities are monitored using custom question-naires and measurements obtained through a smartphone (i.e. activity sen-sors).
The athletes' health is monitored by the OSTRC questionnaire. The athletes' biological age/maturity offset is estimated according to the non-invasive, anthropometric-based method of Mirwald et al.
Intervention: The intervention (i.e. the preventative training program) includes a specific, complementary training of leg-, hip- and core-strength/stability and will be conducted over an intervention period of 12 months. The control interven-tion, compromises no such training program.
Conditions
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Study Design
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NON_RANDOMIZED
SEQUENTIAL
PREVENTION
NONE
Study Groups
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intervention
preventative training program
preventative training program
complementary training of leg-, hip- and core-strength/stability
control
no such training
No interventions assigned to this group
Interventions
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preventative training program
complementary training of leg-, hip- and core-strength/stability
Eligibility Criteria
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Inclusion Criteria
* Written informed consent by the participant (or parents)
Exclusion Criteria
13 Years
36 Years
ALL
Yes
Sponsors
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Swiss National Science Foundation
OTHER
Balgrist University Hospital
OTHER
Responsible Party
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Joerg Spoerri
Principal Investigator
Principal Investigators
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Jörg Spörri, PD Dr.
Role: PRINCIPAL_INVESTIGATOR
Balgrist University Hospital
Locations
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Balgrist University Hospital Balgrist Move>Med
Zurich, , Switzerland
Countries
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Other Identifiers
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ISPA
Identifier Type: -
Identifier Source: org_study_id
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