Impact of prior anterior cruciate ligament, hamstring or groin injury on lower limb strength and jump kinetics in elite female footballers

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Collings, Tyler J
Diamond, Laura E
Barrett, Rod S
Timmins, Ryan G
Hickey, Jack T
du Moulin, William S
Gonçalves, Basílio AM
Cooper, Christopher
Bourne, Matthew N
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2021
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Abstract

Objective: To compare lower limb strength and countermovement jump (CMJ) kinetics between elite female footballers with and without a history of anterior cruciate ligament reconstruction (ACLR), hamstring strain, or hip/groin injury.

Design: Cross-sectional.

Setting: Field-based.

Participants: 369 elite female Australian football, soccer and rugby league players aged 15–35.

Main outcome measures: Isometric hip adductor and abductor strength, eccentric knee flexor strength, and CMJ vertical ground reaction forces, including between-leg asymmetry. Players reported their lifetime history of ACLR, and whether they had sustained a hamstring strain, or hip/groin injury in the previous 12-months.

Results: Players with a unilateral history of ACLR (n = 24) had significant between-leg asymmetry in eccentric knee flexor strength (mean = −6.3%, 95%CI = −8.7 to −3.9%, P < .001), isometric hip abductor strength (mean = −2.5%, 95%CI = −4.3 to −0.7%, P = .008), and CMJ peak landing force (mean = −5.5%, 95%CI = −10.9 to −0.1%, P = .046). Together, between-leg asymmetry in eccentric knee flexor strength, isometric hip abductor strength, and CMJ peak landing force distinguished between players with and without prior ACLR with 93% accuracy.

Conclusion: Elite female footballers with a history of ACLR, but not hamstring or hip/groin injury, exhibit persistent between-leg asymmetries in lower limb strength and jump kinetics following a return to sport.

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Physical Therapy in Sport

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52

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Clinical sciences

Sports science and exercise

Allied health and rehabilitation science

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Collings, TJ; Diamond, LE; Barrett, RS; Timmins, RG; Hickey, JT; du Moulin, WS; Gonçalves, BAM; Cooper, C; Bourne, MN, Impact of prior anterior cruciate ligament, hamstring or groin injury on lower limb strength and jump kinetics in elite female footballers, Physical Therapy in Sport, 2021, 52, pp. 297-304

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