The influence of a soccer season on non-contact injury and isokinetic peak torque of the quadriceps and hamstrings in professional youth soccer players

Isokinetic strength screening is utilized in professional soccer. However, there has been little research on the interaction between seasonal changes in players' peak torque (PT) and injury incidence. Twenty-five (age 16.5 0.68 years) professional youth soccer players participated in the study....

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Bibliographic Details
Published in:Research in sports medicine 2021-05, Vol.29 (3), p.240-253
Main Authors: Brow, Colin Charles, Bakhshi, Andisheh, Wrigely, Russ, Unnithan, Viswanath B
Format: Article
Language:English
Subjects:
Adolescent
Competitive Behavior - physiology
Hamstring Muscles - injuries
Hamstring Muscles - physiology
Humans
Incidence
Injury
isokinetic
Knee - physiology
Lower Extremity - physiology
Muscle Strength
non-dominant limb
Perception - physiology
Physical Exertion - physiology
Quadriceps Muscle - injuries
Quadriceps Muscle - physiology
Seasons
Soccer
Soccer - injuries
Sports injuries
strength
Torque
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Summary:Isokinetic strength screening is utilized in professional soccer. However, there has been little research on the interaction between seasonal changes in players' peak torque (PT) and injury incidence. Twenty-five (age 16.5 0.68 years) professional youth soccer players participated in the study. Bilateral isokinetic concentric (CON) and eccentric (ECC) testing of Quadriceps (Q) and Hamstrings (H) were conducted at three time-points across the season. Absolute CON and ECC PT were measured at 60 degree/sec and in a supine 170-degree position. Testing data was normalized to body mass. A mixed design (2 by 3) repeated measures ANOVA with injury as a co-variate was conducted to evaluate the effect of season and/or limb dominance on PT and injury incidence. With regard to the seasonal variation and injury incidence, an interaction was identified with respect to non-dominant limb (NDL) QCON (p = 0.01) and to a lesser extent the dominant limb (DL) QCON (p = 0.05). The seasonal variation of the PT of the NDL QCON was different between the injured and non-injured individuals. Non-injured individuals, QCON strength increased over the course of the season. While for the Injured players, QCON declined from pre-season to mid-season then increased but never recovered to starting pre-season values.
ISSN:1543-8627
1543-8635
DOI:10.1080/15438627.2020.1771336