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Reliability and Validity

Reliability and Validity

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Can upper extremity functional tests predict the softball throw for distance: a predictive validity investigation.

Rodney J Negrete, William J Hanney, Morey J Kolber

International Journal of Sports Physical Therapy

|June 30, 2011

Summary

The modified pull-up test best predicts softball throw distance, showing significant relationships between upper body strength tests and athletic performance. This aids rehabilitation specialists in assessing athletes effectively.

Keywords:

functional testing upper body power upper body strength

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Area of Science:

Sports Medicine
Biomechanics
Rehabilitation Science

Background:

Understanding the link between performance tests and athletic activity is crucial for rehabilitation specialists.
Assessing upper body strength and power is vital for optimizing athletic performance and injury recovery.

Purpose of the Study:

To identify relationships between specific upper body strength and power tests and softball throw distance.
To determine the best predictor(s) of performance in a sport-specific task, the softball throw for distance.

Main Methods:

One hundred eighty participants (111 female, 69 male, aged 18-45) completed five upper extremity tests.
Pearson product moment correlation and stepwise regression analyses were employed to assess relationships and predictive power.

Main Results:

Significant correlations (r=.33 to .70, p<0.001) were found between all tested upper extremity performance measures.
The modified pull-up test emerged as the strongest predictor of softball throw distance, explaining 48.7% of performance variation.
Including weight, height, and age further improved the predictive accuracy of the model.

Conclusions:

Multiple upper extremity tests show significant correlations with each other and with softball throw performance.
The modified pull-up test is identified as the most effective predictor for softball throw distance, offering valuable insights for athletic assessment.