Early Vertical Forearm (EVF) Catch Technique

Early Vertical Forearm (EVF), often translated as “high-elbow catch” or “early vertical forearm” in Chinese, is one of the most important underwater techniques for modern elite freestyle swimmers. Its core principle is to get the forearm into a position “perpendicular to the direction of travel” as early and as quickly as possible during the pull cycle.

1. Why Is EVF Faster Than Straight-Arm Pulling?

With straight-arm pulling, the entire arm (from shoulder to fingertips) acts as a lever, but the actual surface area pushing water is limited. EVF, on the other hand, turns the forearm and palm into a “large paddle,” increasing the pushing surface area by more than 40%.

2. The 4 Phases of EVF

Phase 1: Entry

• Fingertips enter the water first, at a downward angle of about 45 degrees
• Entry point is at the forward extension of the shoulder line; do not overreach across the midline
• Palm faces slightly outward (about 30 degrees) upon entry

Phase 2: Extension

• The hand extends forward and downward while the shoulder reaches forward
• This phase generates no propulsion; it merely prepares for the next phase

Phase 3: Catch

• This is the key to EVF!
• The elbow stays high (near the water surface) while the forearm rotates downward
• Viewed from the side, the forearm should be nearly perpendicular to the water surface (90 degrees)
• This movement is typically completed at a position 30–40 degrees in front of the body

Phase 4: Pull/Push

• The forearm stays vertical and pulls backward from beneath the shoulder
• The hand path resembles an “S-shape” or a “straight line,” depending on personal preference
• The pull finishes at the side of the thigh

3. Shoulder Mobility Required for EVF

EVF requires good internal rotation mobility of the shoulder joint. Testing method:

• Stand with the elbow bent at 90 degrees and tucked against the side of the body
• Forearm pointing forward
• Keeping the elbow in place, rotate the forearm downward (toward the navel)
• Healthy mobility should reach at least 70 degrees; those suited for EVF should have 80–90 degrees

4. Common Mistakes and Corrections

Mistake 1: Dropped Elbow

The elbow sinks below the forearm, preventing the forearm from becoming vertical and drastically reducing the pushing surface area.

Correction: Use sculling drills (sweeping the hand side-to-side underwater) and add assistive equipment such as the Finis paddle.

Mistake 2: Crossing the Midline

The hand crosses the body’s midline upon entry, causing an S-shaped deviation and lower-body sway.

Correction: Use a kickboard for assistance and keep both hands parallel like two railroad tracks.

Mistake 3: Catching Too Late

The hand has already extended fully forward before starting the catch, wasting the distance gained from the extension.

Correction: Fingertip drag drill, combined with catch-up practice.

5. Progressive Training Plan

6. Quantifiable Metrics

Indicators of good EVF:

• Stroke Rate (SR): In a 25-meter pool, men 12–15 strokes/length, women 14–17 strokes/length
• SWOLF: Target 30–35 in a 25-meter pool
• Distance Per Stroke (DPS): 1.7–2.2 meters/stroke

Conclusion

EVF is not a technique you master overnight; it takes 3–6 months of deliberate practice to become an unconscious movement. But once mastered, combined with a steady kicking rhythm, freestyle efficiency will improve dramatically.

Related Reading

• The Complete Guide to Freestyle High-Elbow Catch (EVF): How Early Vertical Forearm Lets You Gain 15% More Distance Per Stroke
• Training Methods for Early Vertical Forearm (EVF) in the Catch Phase
• Freestyle High-Elbow Catch Fully Deconstructed: The Mechanical Secrets from Entry to Pull
• Freestyle High Elbow Catch: The Most Important Pulling Technique