Musculoskeletal Asymmetry in Young Soccer Players: Differences between the Dominant and Nondominant Leg

Taketomi, Shuji; Kawaguchi, Kohei; Mizutani, Yuri; Yamagami, Ryota; Sameshima, Shin; Takei, Seira; Kage, Tomofumi; Kono, Kenichi; Inui, Hiroshi; Fujiwara, Sayaka; Tanaka, Sakae; Ogata, Toru

doi:10.13189/saj.2022.100220

Cited by 2 publications

(5 citation statements)

References 32 publications

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“…This study was a part of the Prospective Study of Predictors of Sports Injuries: UTokyo Sports Science Institute Sports Injury Prevention Project. 32 , 33 Our institution’s ethics committee approved the study protocol, and written consent was obtained from all participants.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…Muscle flexibility testing was performed on the iliopsoas, quadriceps femoris, hamstring, gastrocnemius, and soleus muscles bilaterally using methods described previously. 21,32,33 These methods are known to be highly reliable. 34 Iliopsoas: The iliopsoas was measured by determining the angle of the hip joint when the participants passively bent their opposite hip joint to the maximum, holding the knee with their hands in a supine position.…”

Section: Muscle Flexibility and Strength Testingmentioning

confidence: 99%

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Factors Associated With a Lateral Ankle Sprain in Young Female Soccer Players: A Prospective Cohort Study

Taketomi,

Kawaguchi,

Mizutani

et al. 2024

Orthopaedic Journal of Sports Medicine

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Background: Previous studies have attempted to determine if certain risk factors can predict the occurrence of a lateral ankle sprain (LAS) in female soccer players. Unfortunately, there is limited evidence with regard to risk factors associated with an LAS in female soccer players. Purpose: To identify intrinsic risk factors for an LAS among young female soccer players. Study Design: Cohort study; Level of evidence, 2. Methods: Participants were 161 young female soccer players in Japan who were evaluated for LAS risk factors during a preseason medical assessment. The assessment included anthropometric, joint laxity, joint range of motion, muscle flexibility, muscle strength, and balance measurements. Each athlete’s history of LASs was also collected. The participants were monitored during a single-yearseason for LASs, as diagnosed by physicians. Results: There were 26 instances of an LAS in 25 players (15.5%) during the season. Injured players were significantly more likely to have sustained a previous ankle sprain ( P = .045) and demonstrated significantly worse balance than their peers without an LAS during the double- and single-leg balance tests ( P = .008 for both). Athletes with lower hamstring-to-quadriceps muscle strength ratios were also significantly more likely to sustain an LAS ( P = .02). Conclusion: Poor balance, a low hamstring-to-quadriceps ratio, and a history of ankle sprains were associated with an increased risk of LASs in young female soccer players in the current study. These findings may be useful for developing a program to prevent LASs in this population.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Muscle Flexibility and Strength Testingmentioning

confidence: 99%

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Factors Associated With a Lateral Ankle Sprain in Young Female Soccer Players: A Prospective Cohort Study

Taketomi,

Kawaguchi,

Mizutani

et al. 2024

Orthopaedic Journal of Sports Medicine

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“…Each CEP was coded with a number and assigned for a condition. Seventeen different programs were designed for thoracic kyphosis (1), lumbar lordosis (2), right thoracic scoliosis (3), left thoracic scoliosis (4), right lumbar scoliosis (5), left lumbar scoliosis (6), anterior pelvic tilt (7), posterior pelvic tilt (8), hamstring stretching (9), hip adductor muscle length-stretching (10), iliopsoas stretching (11), rectus femoris stretching (12), tensor fasciae latae stretching (13), hip external rotator stretching (14), hip internal rotator stretching (15), soleus stretching (16) and gastrocnemius stretching (17) (see Supplementary Materials). In addition, for convenience, the program code was referred to the participants by the researchers during the programs' demonstration.…”

Section: Implementation Of Intervention and Cepsmentioning

confidence: 99%

“…An additional factor that has been observed to be associated with asymmetrical adaptations in bone and muscle circumferences, as well as in lower limb flexibility and in muscular strength, is the presence of laterality in sports [2,14]. It was observed, for example, that the increased usage of the dominant leg in soccer may progressively negatively influence postural asymmetrical adaptations [15,16] and the asymmetry between the two legs due to the single-leg landing impact [17].…”

Section: Introductionmentioning

confidence: 99%

Musculoskeletal Asymmetries in Young Soccer Players: 8 Weeks of an Applied Individual Corrective Exercise Intervention Program

Theodorou,

Tryfonidis,

Zaras

et al. 2023

Applied Sciences

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Introduction: In youth soccer, for examining injury prevention and exercise performance, most of the interventional studies concerning corrective postural asymmetries have applied general intervention programs, ignoring the specific individual corrective needs of each youth player separately. The aim, therefore, of the present study was to examine the effect of 8 weeks of an individualized corrective exercise intervention program on musculoskeletal asymmetries in young soccer players. Materials and Methods: Eighty young male soccer players (age: 14.4 ± 1.2 years; body height: 166.3 ± 9.6 cm; body mass: 59.1 ± 11.5 kg) participated in the current laboratory-based study. A battery of postural and musculoskeletal asymmetry evaluations were initially performed. After the completion of the initial assessment, each player was provided with an individual musculoskeletal asymmetry corrective exercise intervention program which lasted for 8-weeks, with the aim of restoring muscular asymmetries. Following the application of the intervention program, a re-evaluation of their musculoskeletal asymmetries was performed. Results: There was a significant improvement in the primary angle of trunk rotation (r = −0.56, p < 0.001), hamstring flexibility (right: r = −0.55, p < 0.001; left: r = −0.48, p < 0.001), hip external rotation (right: r = −0.46, p < 0.001; left: r = −0.26, p = 0.020), hip internal rotation (right: r = −0.26, p = 0.021; left: r = −0.35, p = 0.002), the opened-eyes Stork Test (right: r = −0.33, p = 0.003: left: r = −0.33, p = 0.003), the closed-eyes Stork Test (right: r = −0.39, p < 0.001; left: r = −0.43, p < 0.001), the Thomas test [right: (χ2(3) = 52.281, p = 0.001, γ^ = −0.751; left: (χ2(3) = 45.832, p = 0.001, γ^ = −0.696)] and of ankle prone passive dorsiflexion (flexed knees) (χ2(2) = 13.019, p = 0.005, V = 0.285). Conclusions: An 8-week individual corrective intervention exercise program may improve postural and musculoskeletal asymmetry status in young male soccer players.

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Musculoskeletal Asymmetry in Young Soccer Players: Differences between the Dominant and Nondominant Leg

Cited by 2 publications

References 32 publications

Factors Associated With a Lateral Ankle Sprain in Young Female Soccer Players: A Prospective Cohort Study

Factors Associated With a Lateral Ankle Sprain in Young Female Soccer Players: A Prospective Cohort Study

Musculoskeletal Asymmetries in Young Soccer Players: 8 Weeks of an Applied Individual Corrective Exercise Intervention Program

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