effect of sex-specific footwear on cutting kinematics in soccer

Question 1

Anterior cruciate ligament does what?

Answer 1

Resist anterior glide, rotation, varus and valgus of tibia

Anterior cruciate ligament (ACL) plays a crucial role in stabilizing the knee joint.

Question 2

Posterior cruciate ligament does what?

Answer 2

Resist posterior glide, rotation, valgus and varus of tibia

The posterior cruciate ligament (PCL) is essential for knee stability.

Question 3

What percent of ACL injury are non-contact?

Answer 3

70%

Non-contact injuries often occur during sudden movements.

Question 4

Define valgus.

Answer 4

Pushes in toward the center of your body

Valgus is a term used to describe the inward angulation of the limb.

Question 5

Define varus.

Answer 5

Pushing out, away from the center of your body

Varus describes the outward angulation of the limb.

Question 6

Characteristics of sidestepping include:

Answer 6

• Quick change of direction
• Contralateral direction of planted foot
• Associated with non-contact ACL injuries

Sidestepping is a common movement in sports that can lead to ACL injuries.

Question 7

Factors contributing to ACL injuries include:

Answer 7

• Increased knee valgus
• Increased hip internal rotation
• Decreased knee flexion

These factors can affect knee stability and increase injury risk.

Question 8

Why are females more at risk of ACL injury?

Answer 8

• Increased knee abduction angles (valgus)
• Decreased knee flexion angles
• Anatomy differences

Biomechanical and anatomical differences contribute to higher injury rates in females.

Question 9

Factors influencing cutting include:

Answer 9

• Anticipated vs unanticipated
• Playing surface (artificial vs grass)
• Shoe-surface traction (big-few studs vs small-many studs)
• Playing speed

Different conditions can affect how athletes perform cutting maneuvers.

Question 10

Characteristics of footwear include:

Answer 10

• Comfort and pressure distribution
• Cleat design and shoe traction

Footwear can significantly impact performance and injury risk.

Question 11

What are the pros of a markerless system?

Answer 11

• Minimize practical limitation and errors related with skin-mounted markers
• Feasibility
• Comparable results with marker system in gait tasks

Markerless systems can enhance data collection in biomechanics.

Question 12

Limitations of a markerless system include:

Answer 12

• Sensitivity to environmental conditions and camera setup
• Lighting, occlusion, camera view

These limitations can affect the accuracy of the data collected.

Question 13

Study results indicated:

Answer 13

• Not significant differences between shoes: running speeds
• Shoe weight rating: Nike better than IDA shoes
• Adduction is higher for whole cycle for SO condition

These findings highlight the importance of shoe choice in performance.