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The purpose of this study was to analyze if a low ankle dorsiflexion range is associate with dynamic knee valgus in youth basketball players.
Cross-sectional study. Ankle dorsiflexion range of motion was assessed by the Weight-bearing lunge test and the dynamic knee valgus by the Single leg squat test.
The participants were basketball players who belonged to youth basketball de-velopmental teams in the under-12 (U12), under-14 (U14), under-16 (U16) and under-17 (U17) categories. All participants were recruited by means of simple random sampling from the Catalan Basketball Federation during the 2018-2019 season. The participants were classified according to gender and age as stipulated by the rules determined an-nually for the respective official competitions. The study was carried out in the facilities of each club. The inclusion criteria were being age >12 and ā¤17 at testing and actively competing during the study. Subjects were excluded if they had sustained any type of injury in the lower limbs before screening; presented any injury (overuse or acute) at the time of testing; if they had any oncological, psychological and/or psychiatric illnesses; or if they did not attend on the day of the assessment.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Experimental group | All participants allowed three practice trials for each test in this order: the Weight-bearing lunge test and the Single-leg squat test. Both of them were evaluated through the Leg Motion system (LegMotion, your MOtionĀ®, Albacete, Spain) |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Observation | Behavioral | Ankle joint dorsiflexion was evaluated with the Weight-bearing lunge test through the Leg Motion system (LegMotion, your MOtionĀ®, Albacete, Spain). Subjects were instructed to try to bring the knee to touch the metal rod (initially placed at a distance of 10 cm) without lifting the heel off the ground. The distance achieved was recorded in centimeters. Single-leg squat test was analyzed through the Leg Motion system (LegMotion, your MOtionĀ®, Albacete, Spain). It consists of performing a monopodial squat to test dynamic knee valgus. They were to perform a single-leg squat to 30Ā° knee flexion. The knee was considered to be aligned if the patella was over the second toe. |
| Measure | Description | Time Frame |
|---|---|---|
| Ankle joint dorsiflexion | he Weight-bearing Lunge Test measured with the Leg MotionĀ® system (Check Your Motion, Albacete) was used. Ankle dorsiflexion was recorded in centimeters. | 1 year |
| Dynamic lower extremity valgus | The Single Leg Squat Test was used. The evaluator recorded a frontal and sagittal view with two filming devices. The knee was considered to be aligned if the patella was over the second toe. | 1 year |
| Measure | Description | Time Frame |
|---|---|---|
| Age | Years | 1 year |
| Age categories | According to the age of the participant could compete in 4 categories: U12, U14, U16 or U17. | 1 year |
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Inclusion Criteria:
Exclusion Criteria:
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The participants were basketball players who belonged to youth basketball de-velopmental teams in the under-12 (U12), under-14 (U14), under-16 (U16) and under-17 (U17) categories.
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| FederaciĆ³n Catalana de Baloncesto | Barcelona | 08018 | Spain |
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| ID | Term |
|---|---|
| D007718 | Knee Injuries |
| D016512 | Ankle Injuries |
| D004194 | Disease |
| D020820 | Dyskinesias |
| ID | Term |
|---|---|
| D007869 | Leg Injuries |
| D014947 | Wounds and Injuries |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |
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| ID | Term |
|---|---|
| D019370 | Observation |
| ID | Term |
|---|---|
| D008722 | Methods |
| D008919 | Investigative Techniques |
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|
| Gender | Male or female | 1 year |
| Weight | Kilograms | 1 year |
| Height | Centimeters | 1 year |
| Wingspan | Centimeters | 1 year |
| Body mass index | Kg/m2 | 1 year |
| Hypermobility | Beighton's criteria (scores of >7 points out of a total of 9 points were considered hypermobile) | 1 year |
| D009069 | Movement Disorders |
| D002493 | Central Nervous System Diseases |
| D009422 | Nervous System Diseases |
| D009461 | Neurologic Manifestations |
| D012816 | Signs and Symptoms |