Injury Prevention and Movement Screening Flashcards

What does an asymmetry index (AI) greater than 10–15% in a unilateral strength test typically indicate for a sport scientist?

Answer: A clinically relevant between-limb asymmetry that may increase injury risk and impair performance

Inter-limb asymmetries exceeding 10–15% have been linked to elevated injury risk and reduced performance in strength and power tests, warranting targeted corrective programming.

Which type of stretching has been shown to have the greatest benefit for injury prevention when performed as part of a warm-up before high-intensity activity?

Answer: Dynamic stretching using sport-specific movements

Dynamic stretching prepares the neuromuscular system by increasing tissue temperature and activating movement patterns relevant to the sport without reducing strength or power output.

Overuse injuries in athletes are primarily caused by:

Answer: Cumulative repetitive stress exceeding the tissue's repair rate over time

Overuse injuries develop when repetitive microtrauma accumulates faster than the tissue can remodel and repair, commonly seen in tendons, bones, and cartilage.

The Y-Balance Test (YBT) is primarily used to assess:

Answer: Dynamic balance and functional movement asymmetry as an injury risk screening tool

The YBT evaluates dynamic balance in three reach directions and identifies between-limb asymmetries that have been prospectively linked to lower-extremity injury risk.

Which factor is most predictive of future hamstring strain injury according to prospective research?

Answer: A previous hamstring strain injury

Prior hamstring strain injury is consistently the strongest predictor of a future hamstring injury, likely due to residual structural and neuromuscular deficits.

Nordic hamstring exercise (NHE) is recommended in injury prevention programs primarily because it:

Answer: Eccentrically strengthens the hamstring at long muscle lengths, reducing strain injury risk

The NHE loads the hamstring eccentrically at long lengths, which remodels fascicle architecture and reduces strain injury risk during the terminal swing phase of sprinting.