[하늘쌤테니스팩폭] 16편 스트레이트 암 vs 더블 벤드 암 포핸드 차이점

Overview

The speaker discusses differences in tennis forehand technique, focusing on why some players’ arms “bend” during the stroke and how this relates to grip choice and racket-face control.

The Core Confusion: “Straight Arm” vs “Double-Bend Arm”

• Many players wonder why their forearm/arm bends in a way that feels unnatural.
• The speaker frames the issue as a comparison between:
  • a “straight arm” forehand, and
  • a “double-bend arm” forehand
• They emphasize that grip choice determines which arm pattern is feasible.

How Grip Influences Arm Mechanics

• Depending on grip, a player may be able to use a double-bend arm to hit higher shots.
• Even if the “general idea” is the same, the swing can be adjusted to some extent.

Grip Feel and Racket-Face Control

Using an example similar to Roger Federer’s grip, the speaker highlights a “palm-like” sensation in the grip (described via parts of the index finger and the heel pad).

• Grip feel influences how the racket face opens
• This, in turn, affects whether a player can bend the arm while still producing the correct racket-face angle at contact

Why Straightening Isn’t Always “Better”—But Sometimes Necessary

The speaker argues that for certain shots:

• Straightening the arm isn’t inherently superior
• However, it may be necessary for the ball to go in
• The wrist and racket-face positions must match the mechanics required by the incoming contact setup (they contrast “front contact” with variations that require different wrist action)

Double-Bend Forehands: Possible With Experience (But Not Universally)

• With sufficient experience and a Western-type grip, the speaker suggests double-bend mechanics can be used.
• With a semi-Western grip, keeping the wrist fixed while straightening can cause problems with grip/wrist alignment, making it “inevitable” to end up in a bend-arm pattern.

They also stress:

• Players who hit effectively with a given arm shape likely do so by keeping the wrist straighter
• They recommend rewatching a prior video to find the “straightening feeling”

Correction Requires More Than Changing the Wrist

• Correction is difficult if it involves only adjusting the wrist.
• If you change one element without addressing the related angles, the swing may no longer “fit,” and control worsens.
• The speaker adds that correcting alone (without a swing trainer/system) is especially hard because you must fix both arm position and wrist angle together.

Coaching Principles: Start With the Player’s Motivation

• The speaker prefers to first understand what the player wants (for example, hitting the ball “wider/spread out”) before forcing changes too quickly.
• They argue that forced changes often fail to “stick.”

Examples of How Grip Affects Shot Shape

Eastern Grip

• The ball tends to be cut, opening the “kite”
• The player may need to hit from farther back and lift
• Several example players are mentioned as sometimes using Eastern grip and hitting from back

Other Grips (Including Semi-Western Variations)

• Trying to straighten the arm from the same wrist position may produce poor results
• They describe:
  • the ball dropping
  • difficulty creating the right racket face
  • mishits

Semi-Western / Hybrid (“Middle” Option)

• A middle ground where the arm is not fully straight and not fully styled
• The racket face is created more naturally
• Whether a “double-bend” pattern (or any pattern) is “good” depends on:
  • grip
  • wrist movement
• There is no universal rule that one arm style is always best

Conclusion

The speaker rejects the idea that one arm style is universally superior. Instead:

• Athletes should test and observe what feels comfortable and produces the correct racket face
• Then they should adapt
• The best path is thorough discussion and individualized coaching, so the player can change in the right direction and gain confidence.

Presenters / Sources

• Quintilian (only explicitly referenced source mentioned)