A postural program to reduce dynamic knee valgus during single-limb squatting in young athletes: a preliminary study.
J Sports Med Phys Fitness
; 62(12): 1693-1701, 2022 Dec.
Article
em En
| MEDLINE
| ID: mdl-35191290
ABSTRACT
BACKGROUND:
Dynamic knee valgus (DKV) is an undesirable multi-joint movement pattern associated with anterior cruciate ligament injury and patellofemoral pain syndrome, especially in sport activities. We assessed DKV in young athletes who followed a postural program to reduce a posterior rigidity mostly attributable to the tightness of hamstring muscles.METHODS:
We considered 12- to 18-year-old athletes that followed a six-week program simply based on hamstring stretching and abdominal muscle activation/strengthening. DKV was assessed during a single-limb squat and the frontal plane projection angle (FPPA) between the femur and tibia was considered.RESULTS:
Sixty-six athletes with a significant DKV (FPPA≥10°) were identified. Twenty-one subjects exhibited the considered rigidity profile and completed the intervention program. The mean reduction of the FPPA after the intervention was 8.1±7.9°, significantly asymmetric by about 3° (P<0.005) and skewed towards larger negative differences. The average change from the initial condition of -37±25% was statistically significant (P=1.7 x10-6).CONCLUSIONS:
This preliminary result suggests that working on enhancing posterior muscle chain flexibility could be effective in reducing DKV in young athletes with a marked tightness of hamstring muscles. Moreover, this simple postural program can be a candidate for inclusion in sport training as a protective strategy against knee injuries.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Lesões do Ligamento Cruzado Anterior
/
Traumatismos do Joelho
Limite:
Adolescent
/
Child
/
Humans
Idioma:
En
Revista:
J Sports Med Phys Fitness
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Itália