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The effect of ocular dominance on the performance of professional baseball players
D M Laby1, D G Kirschen, A L Rosenbaum
1Jules Stein Eye Institute, University of California-Los Angeles, USA.
Objective:
The purpose of the study was to determine whether a performance difference exists between baseball players with "same" (right-right) and "crossed" (right-left) hand-ocular dominance.
Design:
A cohort study design was used.
Participants:
Four hundred and ten major and minor league members of the Los Angeles Dodgers professional baseball team.
Intervention:
Measurement of ocular dominance.
Main Outcome Measures:
Batting average and earned run average (ERA).
Results:
Same/crossed dominance (with P values in parentheses) are as follows: Batting averages: major league-0.271/0.251 (0.20); minor league-0.274/0.270 (0.57); ERA: major league-3.34/3.56 (0.66); minor league-4.00/4.20 (0.54).
Conclusions:
Hand-ocular dominance patterns do not have an effect on batting average or ERA.