| 研究実績の概要 |
The purposes of the current study are 1) to establish a prediction model for the risk of lower extremity injury (LE) and 2) to present evidence of success of breathing-training based injury prevention and transcutaneous vacuum therapy, with a novel approach of using targeted prevention to large cohorts. The rationale that inspired this proposed project is that an effective screening tool and prevention program for LE injury are needed because of the large prevalence of this health care problem in physically active population. In 2017, we conducted the prospective study to determine the ideal cut-off score of functional performance measures and various exploratory outcome measures (heart rate variability parameters, gut microbiota profiles, salivary amylase, spinal reflex excitability, and diaphragm contractility). We could recruit basketball (middle/high schools and college), rugby (college), soccer (college), football (high school and college), and track and field (college) athletes. In the present study, we found that high school and collegiate student athletes that sustained a lateral ankle sprain (LAS) during a competitive season had lower Star Excursion Balance Test (SEBT)and weight-bearing lung test (WBLT) scores before the season began. Deficits in dynamic postural control on the SEBT and ankle dorsiflexion on the WBLT provided potential predictive values for LAS (area under the curve =0.61~0.81). Additionally, we observed that spinal reflex excitability of the selected muscle around the ankle joint had poor predictive capability for lateral ankle sprain.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
We identified dynamic postural control and ankle range of motion as a potential screening tool that has a potential ability to predict lower extremity injury. While we are currently analyzing heart rate variability data, we have not enough statistical power to determine if heart rate variability is an effective and valid injury prediction system. We continue to perform the prospective study to strengthen our prediction model for the risk of lower extremity injury in high school and collegiate athletes through implementation of clinical measures of functional performance, HRV monitoring, and other exploratory outcome measures.
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| 今後の研究の推進方策 |
While data from this current study in 2017 indicate a specific measure of dynamic postural control and ankle range of motion may provide insight on identification of increased risk of a lateral ankle sprain, we are currently analyzing gut microbiota, heart rate variability, and salivary amylase data. To strength our prediction model for lower extremity (LE) injury established in 2017, we continue to perform the prospective study to determine the ideal cut-off score of our selected outcome measures in 2018. To determine the immediate efficacy of breathing-training-based prevention and transcutaneous vacuum therapy on reducing LE injuries, a single-blinded, clustered randomized trial design will be employed in which schools/teams will be designated with a prevention technique in 2018. After screening the schools/teams and establishing LE-high risk (HR) and LE-lower risk (LR) athletes, athletes will receive a yoga-based prevention program with neuromuscular training, neuromuscular training alone, and myofascial release alone during the pre-season. The prevention programs will consist of 18 sessions implemented over a 6-week period (yoga: 60-min, neuromuscular training: 30-min, myofascial release: 10-min). Previously collected data from a similar cohort that received the same screenings and no preventions in 2017 will serve as a control group. The LE injury rates will be compared between the prevention groups as well as LE-HR and LE-LR.
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