chudan uchi uke gyakuzuki
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Seiken Chudan Uchi Uke·FRANCE SHOWAKAN KARATE-DO
Seiken Chudan Uchi Uke
SubFamily正拳中段内受け(Seiken Chudan Uchi Uke)
TraditionalTranslation: Seiken (正拳) = fore-fist, Chudan (中段) = middle level, Uchi (内) = inside, Uke (受け) = block/receive — an inside-to-outside forearm block deflecting midsection attacks by sweeping the forearm outward from the body's centreline
Overview
Seiken Chudan Uchi Uke (commonly called Uchi Uke or Inside Block) is the inside forearm block in traditional karate, deflecting straight punches and strikes directed at the midsection by sweeping the forearm from the inside of the body outward across the centreline, using the inner forearm (radial bone surface or the ulnar surface, depending on the style) to redirect the incoming attack to the outside. [1],[2] The Uchi Uke is the complementary opposite of the Soto Uke (outside block): where the Soto Uke sweeps from outside-to-inside, the Uchi Uke sweeps from inside-to-outside — together, they provide complete lateral coverage of the midsection against straight-line attacks. [1],[2] The block starts with the blocking arm chambered across the body at the opposite hip (fist near the non-blocking hip), then sweeps outward in a horizontal arc to the blocking side, with the forearm contacting the incoming attack and deflecting it to the outside of the defender's body. [1],[2] Oyama emphasised that the Uchi Uke's outward sweep should carry enough force to damage the attacker's arm, following the Kyokushin principle that every block must also be an attack. [1] The outward deflection direction creates a specific counter-punching opportunity: as the block sweeps the attack to the outside, the attacker's centreline opens — the defender can immediately fire a reverse punch (gyaku-zuki) straight down the now-open centreline. [1],[2] This block-counter integration is a mirror image of the Soto Uke's counter: where the Soto Uke deflects inward and counters to the outside, the Uchi Uke deflects outward and counters down the centre — understanding both blocks and their corresponding counters provides a complete defensive-offensive framework for midsection attacks. [1],[2]
Middle Level Inside BlockInside Forearm BlockUchi UkeJPInside-to-Outside BlockInward BlockMiddle Inside Block
History & Origin
The Uchi Uke is one of the four foundational blocks in karate, documented alongside the Age Uke, Soto Uke, and Gedan Barai since the earliest written karate records. [2] Funakoshi included the Uchi Uke in Karate-Do Kyohan (1935) as a basic defensive technique, and it appears in the third basic kata (Heian Sandan) as a prominently featured blocking method. [2] The technique represents the inside-to-outside deflection principle that complements the Soto Uke's outside-to-inside deflection — together, they provide complete lateral defence of the midsection. [1],[2] Oyama's Kyokushin refinement added the destructive blocking component: the outward sweep should damage the attacker's arm. [1]
Effectiveness
The Uchi Uke complements the Soto Uke to provide complete lateral midsection defence: the Soto Uke handles attacks best deflected inward, and the Uchi Uke handles attacks best deflected outward. [1],[2] In competition, the choice between Soto and Uchi Uke depends on the defensive angle and the desired counter-attack direction: Uchi Uke opens the centreline (ideal for straight counter-punches), while Soto Uke opens the outside (ideal for hooking counters or head kicks). [2] The block is used in all levels of karate competition from beginner to world championship. [1],[2]
Lineage
Competition Record
Used in all karate competition at all levels. Complements the Soto Uke for complete midsection defence in Kyokushin full-contact and WKF point competition.
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Biomechanical Mechanism
Primary Action — The forearm sweeps horizontally from the inside of the body outward across the centreline — the forearm (radial or ulnar surface, depending on the style's rotation convention) contacts the incoming attack and deflects it to the outside
Joints Involved — Shoulder (horizontal abduction to drive the forearm outward from the centreline), elbow (maintained at approximately 90° for structural rigidity), wrist (neutral, fist clenched), forearm (some styles rotate from pronated to supinated during the sweep, adding a twisting deflection), opposite arm (retracts to the hip as hikite), hips (rotation to drive the blocking shoulder outward)
Force Vector — Horizontal, from inside to outside — the forearm travels at approximately 90° to the incoming attack's forward vector, creating a perpendicular deflection that redirects the attack laterally to the outside of the defender's body
Leverage Principle — Same deflection-angle principle as the Soto Uke but in the opposite direction: the 90° perpendicular contact redirects the maximum amount of the attack's forward momentum laterally while requiring minimum opposing force. The outward deflection direction opens the attacker's centreline (the space between their two arms), creating the optimal counter-punching lane.
Position & Entry
Against a straight punch to the solar plexus — As the attacker drives a punch toward the midsection, sweep the forearm outward from the hip position, contacting the attacker's forearm and deflecting the punch to the outside — immediately counter with gyaku-zuki down the open centreline
Against a front kick — The Uchi Uke can deflect the chamber or shin of an incoming front kick by sweeping outward against the kicker's inner leg
In kata (Heian Sandan / Pinan Sandan) — The Uchi Uke appears prominently in the third basic Shotokan kata, typically executed in sequence with other blocks as a multi-directional defensive pattern
As a parry in kumite — In competition, a lighter version functions as a quick outward parry that redirects the opponent's punch while maintaining a fast fighting rhythm
After blocking a low attack with Gedan Barai — The attacker's follow-up body punch is deflected outward by the Uchi Uke — creating a low-mid defensive chain
Variants
Standard Uchi Uke — the basic inside-to-outside sweep from opposite hip
Quick Uchi Uke (parry) — a fast, abbreviated version for kumite
Rotating Uchi Uke — adding forearm rotation (pronation to supination) during the sweep for a twisting deflection
Open-hand Uchi Uke — using the open palm for softer deflection
Reinforced Uchi Uke — the opposite hand supports the blocking forearm
Nagashi Uchi Uke — a flowing version (Wado-Ryu) that redirects rather than forcefully sweeps
Double Uchi Uke — both arms sweep outward simultaneously (morote uchi uke)
Videos
How to Do Uchi Uke | Shotokan Karate Inside Block Tutorial
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Seiken Chudan Uchi Uke·Karate Dojo waKu
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Seiken Chudan Uchi Uke·APRENDE Y MEJORA TU KARATE - IMPROVE YOUR KARATE
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Seiken Chudan Uchi Uke·US Budokai Karate Association
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Seiken Chudan Uchi Uke·Ahmed Karateka
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10 videosWhat Instructors Say
Seiken chudan uchi uke is an inside middle-area block executed from fudodachi stance with shoulder-width spacing, as demonstrated by the US Budokai Karate Association. The technique comprises two sequential but overlapping phases, according to Karate Dojo waKu's detailed kinesiological breakdown. Phase one involves elbow displacement: the elbow shifts laterally across the body's centerline, generating momentum toward the blocking side. Phase two executes a coordinated wrist and forearm flick that completes the blocking motion. Yusuke from waKu emphasizes that these phases must not be performed sequentially but rather initiated simultaneously, with the elbow movement providing a "head start" that accelerates the subsequent wrist snap. He recommends using weighted objects to develop proprioceptive awareness of momentum transfer, ensuring the block's force extends fully toward the blocking hand's tip rather than dissipating prematurely. Critical positioning includes bringing the elbow along the body's centerline, creating lateral distance through the swing rather than relying solely on rotation. The block generates power through linear shoulder-to-elbow movement before the rotational component engages, distinguishing efficient execution from ineffective purely rotational variations.
Synthesized from 2 instructors
- US Budokai Karate Association — Inside Out Middle Area Block - Seiken Chudan Uchi Uke: Established foundational stance (fudodachi) and basic execution framework
- Karate Dojo waKu — Karate Inside Block Tutorial｜Uchi Uke 内受け: Provided detailed biomechanical analysis of two-phase technique: elbow shift followed by wrist flick; emphasized simultaneous initiation rather than sequential execution; introduced weighted training methodology for power development and momentum awareness
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Ratings
Risk of injury to the person this technique is applied to
3
Moderate3/10
Primarily defensive. The outward sweep can cause bruising to the attacker's arm, and the forearm-to-forearm collision produces a 'dead arm' effect similar to the Soto Uke. Repeated Uchi Uke blocks accumulate damage on the attacker's punching arm. [1]
Skill level needed to execute this technique reliably
Beginner
Whether this technique is allowed under major competition rule sets
— Unified MMA — Legal defensive technique
Unified Rules of MMA, August 2025PDFWBC/Boxing — Legal — blocking and evasion are core boxing skills {src— WBC Rules of Boxing}
— WKF — Legal — blocking is a fundamental karate skill
WKF Competition Rules 2024PDFKyokushin — Legal {src— IKO Kyokushin Tournament Rules}
— WT — Legal
WT Competition Rules 2024PDF— WAKO — Legal
WAKO Competition RulesPDFK-1/GLORY — Legal {src— K-1/GLORY Kickboxing Rules}
— IFMA — Legal
IFMA Muay Thai RulesPDFTraining Notes
✓The block starts at the OPPOSITE hip — the cross-body motion provides the longest sweep path. Chamber the fist near the non-blocking hip, then sweep outward to the blocking side (Oyama, 1965). [1] The elbow angle must stay at approximately 90° throughout — too tight and the blocking surface is too small; too extended and the arm lacks rigidity. [1],[2] Understanding the Soto-Uchi relationship: drill both blocks alternately against the same attack. Soto Uke deflects inward → counter to outside. Uchi Uke deflects outward → counter down centre. This dual understanding is essential for advanced defensive strategy. [2] The forearm rotation (if used by your style) adds a twisting component to the deflection: the incoming attack is not only redirected laterally but also twisted, further disrupting the attacker's arm structure. [2] Condition the blocking surface through progressive partner drills — the same method used for Soto Uke conditioning. [1] The block-counter integration: Uchi Uke → Gyaku-Zuki Chudan must be drilled as a SINGLE movement. The block opens the centreline, and the counter-punch fires down the opening simultaneously. [1],[2]
Common Mistakes
!Starting from the blocking side instead of the opposite hip — shortcutting the sweep path reduces force and range
!Blocking with the wrong forearm surface — the style determines whether the radial or ulnar surface contacts; using the wrong surface changes the deflection angle
!Over-extending the arm — straightening the elbow during the block reduces structural rigidity
!Sweeping too far to the outside — the block should redirect the attack just past the centreline; sweeping too far opens the blocking side
!Blocking too late — the forearm must be in position before the attack arrives
!Not countering — the Uchi Uke opens the attacker's centreline; failing to counter wastes this opening
Related Techniques
Counter Techniques
Feint body, attack head — draw the Uchi Uke then attack the exposed faceHook punch — circular attacks arc around the outward-sweeping blockLow kick — the Uchi Uke defends the midsection; low kicks are unaffectedDouble-level attack — simultaneous high and mid attacks overwhelm a single-direction blockSpeed — fast attacks arrive before the sweep completesFollow-up immediately — attacking during the block's recovery phase
Setup Chain
1Attacker throws Seiken Chudan Tsuki → Defender sweeps forearm outward from opposite hip (Uchi Uke) → Outer forearm contacts attacker's forearm → Deflects the punch to the outside of the defender's body → Attacker's centreline opens → IMMEDIATELY: Gyaku-Zuki Chudan (reverse punch) fires down the open centreline → Block and counter complete as one action
Sources & References
Primary Source
This Is Karate (Oyama, 1965)
1Book[1] Oyama, M. (1965). This Is Karate. Japan Publications Trading Co. Blocking techniques section. [2] Funakoshi, G. (1935/1973). Karate-Do Kyohan: The Master Text. Kodansha International. Uke Waza.pp. Oyama 1965 Blocking section
description: [1] Oyama 1965, [2] Funakoshi 1973
Official karate technique names (和語/漢語)
3OtherJapanese Martial Arts Standard Terminology (武道用語)
Established Japanese martial arts naming convention — native Japanese term (和語/漢語)
4Citation[1] Oyama, M. (1965). This Is Karate. Japan Publications Trading Co. Blocking techniques section. [2] Funakoshi, G. (1935/1973). Karate-Do Kyohan: The Master Text. Kodansha International. Uke Waza.pp. Oyama 1965 Blocking section
description: [1] Oyama 1965, [2] Funakoshi 1973
Community
Athletics
Minimal requirements — accessible to all body types
Forearm conditioning develops through training
Basic coordination
One of the first techniques taught to karate beginners
Notes
Uchi uke (inside block) deflects attacks from inside to outside — the reverse direction of soto uke. Used to redirect straight punches and front kicks by sweeping them outward. (Nakayama, Dynamic Karate; Funakoshi, Karate-Do Kyohan)
Frequently Asked Questions
How should I position my elbow when performing seiken chudan uchi uke?
Your elbow should end on the centerline of your body—keep it there throughout to avoid elbow shift. Make sure to create width with your block, positioning it slightly to the side rather than directly in front of your centerline.
What's the most common mistake when transitioning between blocking positions?
Students tend to complete one block fully before starting the next, but you should overlap the movements—start the second block as the first one ends to maintain continuity and proper weight transfer.
How do I ensure my weight transfers properly in this block?
Make sure your weight travels all the way to the tip of your blocking arm and extends to the side, rather than stopping early at your centerline. Practicing the weight transfer separately helps develop this important detail.
How does the Seiken Chudan Uchi Uke work?
Seiken Chudan Uchi Uke (commonly called Uchi Uke or Inside Block) is the inside forearm block in traditional karate, deflecting straight punches and strikes directed at the midsection by sweeping the forearm from the inside of the body outward across the centreline, using the inner forearm (radial bone surface or the ulnar surface, depending on the style) to redirect the incoming attack to the outside. The Uchi Uke is the complementary opposite of the Soto Uke (outside block): where the Soto Uke sweeps from outside-to-inside, the Uchi Uke sweeps from inside-to-outside — together, they provide complete lateral coverage of the midsection against straight-line attacks.
Where does the Seiken Chudan Uchi Uke come from?
The Uchi Uke is one of the four foundational blocks in karate, documented alongside the Age Uke, Soto Uke, and Gedan Barai since the earliest written karate records. Funakoshi included the Uchi Uke in Karate-Do Kyohan (1935) as a basic defensive technique, and it appears in the third basic kata (Heian Sandan) as a prominently featured blocking method.
Is the Seiken Chudan Uchi Uke legal in competition?
Unified MMA: legal — Legal defensive technique; WBC/Boxing: legal — Legal — blocking and evasion are core boxing skills; WKF: legal — Legal — blocking is a fundamental karate skill; Kyokushin: legal — Legal; WT: legal — Legal; WAKO: legal — Legal; K: legal — 1/GLORY — Legal; IFMA: legal — Legal
How dangerous is the Seiken Chudan Uchi Uke?
Danger rating 3/10. Primarily defensive. The outward sweep can cause bruising to the attacker's arm, and the forearm-to-forearm collision produces a 'dead arm' effect similar to the Soto Uke. Repeated Uchi Uke blocks accumulate damage on the attacker's punching arm.
How do I set up the Seiken Chudan Uchi Uke?
The standard setup chain: Attacker throws Seiken Chudan Tsuki → Defender sweeps forearm outward from opposite hip (Uchi Uke) → Outer forearm contacts attacker's forearm → Deflects the punch to the outside of the defender's body → Attacker's centreline opens → IMMEDIATELY: Gyaku-Zuki Chudan (reverse punch) fires down the open centreline → Block and counter complete as one action.
How do I defend against the Seiken Chudan Uchi Uke?
Standard counters include: Feint body, attack head — draw the Uchi Uke then attack the exposed face / Hook punch — circular attacks arc around the outward-sweeping block / Low kick — the Uchi Uke defends the midsection; low kicks are unaffected / Double-level attack — simultaneous high and mid attacks overwhelm a single-direction block.
What are the variants of the Seiken Chudan Uchi Uke?
Common variants: Standard Uchi Uke (the basic inside-to-outside sweep from opposite hip); Quick Uchi Uke (parry) (a fast, abbreviated version for kumite); Rotating Uchi Uke (adding forearm rotation (pronation to supination) during …); Open-hand Uchi Uke (using the open palm for softer deflection); Reinforced Uchi Uke (the opposite hand supports the blocking forearm); Nagashi Uchi Uke (a flowing version (Wado-Ryu) that redirects rather than f…); Double Uchi Uke (both arms sweep outward simultaneously (morote uchi uke)).
How effective is the Seiken Chudan Uchi Uke in competition?
Used in all karate competition at all levels. Complements the Soto Uke for complete midsection defence in Kyokushin full-contact and WKF point competition.
What are common mistakes when doing the Seiken Chudan Uchi Uke?
Top errors to watch for: Starting from the blocking side instead of the opposite hip — shortcutting the sweep path reduces force and range / Blocking with the wrong forearm surface — the style determines whether the radial or ulnar surface contacts; using th… / Over-extending the arm — straightening the elbow during the block reduces structural rigidity / Sweeping too far to the outside — the block should redirect the attack just past the centreline; sweeping too far ope….
What are other names for the Seiken Chudan Uchi Uke?
The Seiken Chudan Uchi Uke is also known as Seiken Chudan Uchi Uke, Middle Level Inside Block, Inside Forearm Block, Uchi Uke, Inside-to-Outside Block.