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[Purpose] The objective of the present study was to elucidate the relationships between speed (in the vertical direction) and oxygen uptake (V • O2) and motor efficiency (NE) for different patterns of staircase climbing (using alternate feet, or step through, vs. placing both feed on each step, or step to ). [Subjects] The subjects were 30 healthy adults. [Methods] Subjects were instructed to climb a staircase (30° inclination) for 3 min using both step through and step to patterns at speeds (in the vertical direction) of 3.5, 7.0, and 10.5 m/min. V • O2 and heart rate (HR) during climbing were measured and NE was calculated. Through two-way ANOVA (dependent variables: V • O2, METs, HR, NE), we tested the difference among speed patterns and between different patterns of staircase climbing. [Results] For both climbing patterns, V • O2, HR and NE increased proportionally with speed. Compared with the step to climbing pattern, V • O2 at a climbing speed of 3.5 m/min was higher for the step through pattern. However, V • O2 at a climbing speed of 10.5 m/min was higher for the step to pattern. [Conclusion] Differences in NE for the step through and step to patterns play a role in the relationship between speed and V • O2.

Effect of Motion Pattern for Oxygen Uptake and Exercise Efficiency during Stair Climbing