Performance Boost påvirkning af muskelstyrken hos kvindelige elitefodboldspillere
Oversat titel
The impact of Performance Boost on muscle strength in female elite soccer players
Forfattere
Boll, Karianne Tuxen ; Degn, Rasmus
Semester
4. semester
Udgivelsesår
2022
Afleveret
2022-06-01
Antal sider
34
Resumé
Baggrund: Antallet af kvindelige fodboldspillere er vokset kraftigt, hvilket har øget professionaliseringen og de fysiske krav. Når kravene stiger, øges skadesrisikoen, særligt for knæ-, ankel- og muskelskader i underekstremiteten. Der mangler viden om skadesforebyggende træning målrettet muskelskader hos kvindelige spillere. Performance Boost er et anbefalet skadesforebyggende program. Formålet var at undersøge, hvordan Performance Boost påvirker muskelstyrken hos kvindelige elitefodboldspillere. Metode: Pre–post-studie i en dansk kvindelig elitetrup. Deltagerne blev testet i muskelstyrke, sprint og countermovement jump (CMJ, en vertikal hoptest) før og efter 8 uger med Performance Boost. Muskeltestene omfattede eksentrisk adduktion (styrke når musklen arbejder under forlængelse, når benet føres ind mod kroppen), isometrisk udadrotation (statisk styrke), rate of force/torque development (RFD/RTD; hvor hurtigt kraft udvikles i de første 100 og 200 ms) samt isometrisk styrke i hamstrings og adduktorer. Resultater: Der sås statistisk signifikante stigninger i eksentrisk adduktorstyrke fra 3.5 ±0.4 til 3.9 ±0.4 Nm/kg (p=0.008), i RTD 0–100 ms fra 9.1 ±4.2 til 11.0 ±5.3 Nm/kg (p=0.05) og ved 200 ms fra 6.4 ±2.2 til 7.7 ±2.9 Nm/kg (p=0.008), samt i isometrisk adduktion fra 2.1 ±0.4 til 2.4 ±0.4 Nm/kg (p=0.003). CMJ-højden steg fra 44.2 ±5.7 cm til 46.6 ±4.7 cm (p=0.02). Der var stærke korrelationer mellem CMJ og RTD100 i adduktion (r=0.95, p=0.001) og mellem CMJ og RTD200 i adduktion (r=0.93, p=0.003). Konklusion: Efter 8 uger var Performance Boost forbundet med forbedret styrke i hoftens adduktorer og højere CMJ. Da studiet ikke havde en kontrolgruppe, kan det ikke konkluderes, at programmet alene forårsagede forbedringerne.
Background: The number of female football players has grown rapidly, increasing professionalization and physical demands. As demands rise, injury risk increases, especially for knee, ankle, and lower-limb muscle injuries. There is limited research on injury-prevention training targeting muscle injuries in female players. Performance Boost is a recommended injury-prevention program. This study examined how Performance Boost affects muscle strength in elite female footballers. Methods: Pre–post study in a Danish elite women’s squad. Participants were tested in muscle strength, sprint performance, and countermovement jump (CMJ, a vertical jump test) before and after 8 weeks of Performance Boost. Muscle tests included eccentric adduction (strength while the muscle lengthens as the leg moves toward the midline), isometric external rotation (static strength), rate of force/torque development (RFD/RTD; how quickly force is produced in the first 100 and 200 ms), and isometric strength in the hamstrings and adductors. Results: Statistically significant increases were found in eccentric adductor strength from 3.5 ±0.4 to 3.9 ±0.4 Nm/kg (p=0.008); in RTD 0–100 ms from 9.1 ±4.2 to 11.0 ±5.3 Nm/kg (p=0.05) and at 200 ms from 6.4 ±2.2 to 7.7 ±2.9 Nm/kg (p=0.008); and in isometric adduction from 2.1 ±0.4 to 2.4 ±0.4 Nm/kg (p=0.003). CMJ height improved from 44.2 ±5.7 cm to 46.6 ±4.7 cm (p=0.02). Strong correlations were observed between CMJ and RTD100 in adduction (r=0.95, p=0.001) and between CMJ and RTD200 in adduction (r=0.93, p=0.003). Conclusion: After 8 weeks, Performance Boost was associated with increased hip adductor strength and higher CMJ. Because there was no control group, we cannot conclude that the program itself caused these improvements.
[Dette resumé er omskrevet med hjælp fra AI baseret på projektets originale resumé]