The primary difference between breaststroke and butterfly lies in their arm action.
Key Differences in Arm Movement
| Feature | Breaststroke | Butterfly |
|---|---|---|
| Arm Action | Arms move in a circular motion under the water. | Arms are brought forward together above the water. |
Detailed Explanation
The butterfly stroke, as indicated in the reference, is distinct because the arms recover forward above the water's surface. Conversely, in the breaststroke, the arm movement happens entirely under the water, sweeping in a semicircular pattern.
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Butterfly:
- Arms move in unison forward over the water.
- The arms pull back through the water simultaneously.
- This action requires a coordinated undulating body motion and dolphin kick.
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Breaststroke:
- Arms push out forward together, then sweep outwards and back in a circular motion under water.
- Legs do a "frog kick".
- The body remains relatively flat with a rhythmic rise and fall.
Additional Points
- History: The reference notes that the butterfly stroke gained attention in 1933 when Henry Myers demonstrated it during a race.
- Exclusivity: According to the reference, the butterfly is used only in competitions.
- Coordination: Both strokes require significant coordination, but the butterfly typically requires more strength and coordination.
