Gender-specific hip strength disparities correlate with injury patterns in NCAA men's and women's soccer players.

BACKGROUND: In National Collegiate Athletic Association (NCAA) soccer athletes, men have higher rates of hip and groin strains, whereas women have higher rates of knee ligament injuries. Strength imbalances of the hip and thigh, specifically in agonist-antagonist muscles, are known risk factors for these injuries. OBJECTIVE: To perform hip and thigh strength assessments in NCAA soccer players to evaluate for differences between genders and correlations with gender-specific injury patterns. DESIGN: With a handheld dynamometer, weight-normalized isometric strength of six muscle groups (hip abductors, hip adductors, hip flexors, hip extensors, knee flexors, knee extensors) was calculated in NCAA soccer players. The strength ratio of each agonist-antagonist muscle was also calculated (hip abductors/adductors, hip flexors/extensors, knee extensors/flexors). PARTICIPANTS: Thirty-six NCAA soccer players (18 men, 18 women) from a single NCAA Division III institution. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Weight-normalized strength of six muscle groups and their agonist-antagonist strength ratios were compared between genders using linear mixed-effects models. RESULTS: Compared with male players, female players had decreased weight-normalized strength for hip abduction (0.170 vs. 0.204, p = .012) and hip extension (0.172 vs. 0.211, p = .021). Otherwise, weight-normalized strength was similar between genders. When comparing agonist-antagonist strength ratios, there was a significant difference between female and male players for hip flexion:extension (1.70 vs. 1.35, p = .008), whereas the hip abduction: adduction ratio did not reach statistical significance (1.45 vs. 1.62, p = .080). CONCLUSIONS: NCAA male and female soccer players had different hip strength profiles that fit their injury patterns. Male NCAA soccer players have higher rates of hip and groin strains, and men in the cohort had strength ratios that were deficient in the hip flexors and adductors compared with women. Female NCAA soccer players have higher rates of knee sprains and anterior cruciate ligament tears, and women in the cohort had strength ratios that were deficient in the hip abductors and extensors, which function to stabilize the knee. These strength disparities could be the focus of future gender-specific soccer injury prevention programs.

Suggested Curricular Guidelines for Musculoskeletal and Sports Medicine in Physical Medicine and Rehabilitation Residency Training.

ABSTRACT: A sports medicine physician manages musculoskeletal (MSK) injuries and sport-related medical and MSK conditions of patients of all ages and abilities. Physical medicine and rehabilitation physicians (physiatrists) must be adequately trained to provide this care for all patients including, but not limited to, athletes participating in organized sports, the weekend warrior as well as athletes with disabilities. Accreditation Council of Graduate Medical Education core requirements and basic guidelines help physiatry residency training programs develop and implement residency curriculums. The goal of this article is to provide suggested curricular guidelines to optimize physiatrist training in MSK and sports medicine.