No-contact Basic Aikido Techniques #1 - With Jo
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Standard Jo Block·Tampa Aikido
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Standard Jo Block
Genus杖受けの基本
TraditionalTranslation: Basic Short Staff Block
Overview
History & Origin
The standard jo block represents the foundational defensive technique in jojutsu, appearing in the first Seitei Jodo kata (Tsuki-zue) and in numerous Shinto Muso-ryu techniques. [1] The block is executed by holding the jo in a two-handed grip and positioning it to intercept the descending sword cut, absorbing force along the staff's axis. [2] This fundamental receiving action embodies the core principle of jojutsu: using the jo's speed and versatility to neutralise the sword's cutting power before immediately transitioning to a counter-attack. [2]
Effectiveness
The standard jō block is the fundamental defensive technique in jōjutsu/jōdō, intercepting sword attacks with the short staff. [1]
Lineage
Standard jō blocking technique was systematised within the Shintō Musō-ryū and incorporated into modern AJKF jōdō. [1]
Competition Record
Standard jō blocks are performed in AJKF jōdō kata competition. [1]
Images
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Biomechanical Mechanism
Primary Action — Cutting, thrusting, or striking with a bladed weapon — edge alignment and trajectory determine cutting effectiveness
Joints Involved — Wrists (edge alignment and rotation), elbows (extension for thrusts, chambering for cuts), shoulders (arc of the cut), hips (power generation)
Force Vector — Varies — downward diagonal cut (kesa-giri), horizontal cut (yoko-giri), thrust (tsuki), or rising cut (kiri-age)
Weapon Mechanic — Edge alignment (hasuji) is critical — the blade must travel along its cutting plane for effective cuts
Position & Entry
From ready stance (chudan-no-kamae or equivalent) — Assume guard position, establish distance (ma-ai), execute the cut or thrust when an opening appears
From engagement distance — Use footwork to close to striking range, execute the technique with proper edge alignment (hasuji)
As counter — Wait for the opponent's attack, deflect or avoid, and counter-cut to the exposed target
Variants
Standard cut — primary cutting angle from the ready stance
Thrust (tsuki) — straight thrust targeting the throat, chest, or face
Rising cut (kiri-age) — upward diagonal cut from low to high
Diagonal cut (kesa-giri) — downward diagonal cut following the kimono line
Videos
6 Forbidden Knockout Pressure Points (Martial Arts Secrets You’re Not Supposed to Know)
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Standard Jo Block·Master Yourself
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Japanese Jo or walking stick for self defense
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Standard Jo Block·Matt Pasquinilli
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3 videosWhat Instructors Say
The standard jo block is a defensive technique using the Japanese short staff (jo) to intercept and deflect incoming attacks. According to Matt Pasquinilli, the foundational blocking mechanics involve positioning the staff between defender and opponent, with hand placement controlling both the angle and power of the deflection. The technique emphasizes pushing attacks off the center line rather than meeting force directly, particularly important when defending against bladed weapons that could damage the staff if struck edge-on. Pasquinilli details specific hand positioning: the back hand turns palm-up while the front hand turns palm-down, creating a pushing motion behind the body before transitioning into counterattacks. The block can be executed at various angles—straight down the middle, to the temple, clavicle, ribs, or knee—with the top hand controlling trajectory and the bottom hand generating primary power. Pasquinilli stresses continuous hand contact with the weapon to prevent disarming and demonstrates fluid transitions from blocking into spearing strikes and overhead strikes. The Tampa Aikido video provides no usable transcript content for analysis. The Master Yourself video on pressure points, while addressing general self-defense principles, does not specifically address jo blocking mechanics or staff-weapon defensive techniques, making it not directly applicable to this technique's synthesis.
Synthesized from 3 instructors
- Matt Pasquinilli — Japanese Jo or walking stick for self defense: Detailed blocking mechanics, hand positioning (palm orientation), angle variations, center-line deflection theory, transition methods between blocks and strikes, emphasis on continuous weapon contact
- Tampa Aikido — No-contact Basic Aikido Techniques #1 - With Jo: No usable transcript content provided
- Master Yourself — 6 Forbidden Knockout Pressure Points (Martial Arts Secrets You're Not Supposed to Know): Not applicable to jo blocking technique; focuses on pressure point theory rather than staff weapon defense
Learn This Technique
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Ratings
Risk of injury to the person this technique is applied to
7
Very High7/10
Staff/bo/jo weapons generate significant blunt force; fracture risk
Skill level needed to execute this technique reliably
Intermediate
Whether this technique is allowed under major competition rule sets
— Traditional martial arts — Practiced in traditional kata/...
— IWUF — Legal in wushu taolu if applicable
IWUF Competition RulesPDFHEMA — Legal in applicable historical weapon categories {src— various organizations
Training Notes
✓The standard jo block uses a two-handed lateral deflection — the jo intercepts the incoming weapon and redirects it to the side while maintaining structural integrity (Draeger, Classical Bujutsu, 1973)
✓Execution: from the guard position, shift the jo to meet the incoming attack with the centre section, angling the staff to deflect the weapon offline
✓The lead hand guides the deflection angle while the rear hand provides support and prepares for the counter-technique
✓The block receives the weapon at a 30-45 degree angle — this deflects the force laterally rather than absorbing it directly
✓After the deflection, the jo is immediately positioned for a counter-thrust — the rear end extends toward the opponent's exposed centre line
✓The feet step offline during the block — moving the body out of the attack line while the jo redirects the weapon
✓The standard block is the most-practised technique in jojutsu — it appears in the majority of the 64 Shinto Muso-ryu kata
Common Mistakes
!Receiving the strike at 90 degrees — a perpendicular block absorbs maximum impact; angle the jo to deflect
!Not stepping offline — the body must move off the attack line; relying on the block alone risks being overpowered
!Keeping the rear hand passive — the rear hand drives the counter-thrust; it must be active and ready
!Gripping too tightly — the hands need to slide and adjust during and after the block; a rigid grip prevents this
!Not transitioning to the counter-thrust — the block without an immediate follow-up is only half the technique
!Blocking too aggressively — over-extending into the block pulls you off balance and out of position
!Using the same block timing every time — vary the timing to prevent the attacker from reading your defence
Related Techniques
Counter Techniques
Setup Chain
1Assume Guard (Kamae/Hut) — take the appropriate ready position with the weapon
2Measure Distance (Ma-ai) — establish correct striking distance
3Initiate Cut/Thrust — execute the technique with proper edge alignment or point control
4Follow Through (Zanshin) — maintain awareness and readiness after the technique
Sources & References
Primary Source
The Essence of Okinawan Karate-Do (Shoshin Nagamine, 1976)
1BookThe Art of the Japanese Sword (Sato, 1983)
Alias sources — [1] Kobudo: Okinawan Weapons (Demura, 1976) [2] Comprehensive Asian Fighting Arts (Draeger & Smith, 1969) [3] Comprehensive Asian Fighting Arts (Draeger & Smith, 1969)
2BookFilipino Martial Arts (Inosanto, 1980)
History sources — [1] Krieger, P., The Jo: Art of the Japanese Short Staff (Koryu Books, 1989) [2] Draeger, D., Classical Bujutsu (Weatherhill, 1973)
3OtherJapanese Martial Arts Standard Terminology (武道用語)
Established Japanese martial arts naming convention — native Japanese term (和語/漢語)
4CitationThe Art of the Japanese Sword (Sato, 1983)
Alias sources — [1] Kobudo: Okinawan Weapons (Demura, 1976) [2] Comprehensive Asian Fighting Arts (Draeger & Smith, 1969) [3] Comprehensive Asian Fighting Arts (Draeger & Smith, 1969)
5CitationFilipino Martial Arts (Inosanto, 1980)
History sources — [1] Krieger, P., The Jo: Art of the Japanese Short Staff (Koryu Books, 1989) [2] Draeger, D., Classical Bujutsu (Weatherhill, 1973)
Community
Athletics
Requires
wrist control for edge alignment, grip endurance, footwork precision
Favours
quick wrists, strong forearms, good posture
Key muscles
forearm extensors/flexors, deltoids, core, calves
Frequently Asked Questions
How do I maintain control of the jo staff so my opponent can't knock it out of my hand?
According to Matt Pasquinilli, you should practice changing hand positions without ever taking your hands off the weapon by sliding one hand over the other. This continuous contact with the staff makes it much harder for an opponent to knock it away or disarm you.
What's the proper hand positioning when blocking with the jo?
Matt Pasquinilli teaches positioning your hand at the end of the staff with your palm up or down, keeping your back leg back, then stepping forward to block while maintaining hand contact along the length of the staff throughout the motion.
How should I angle my strikes with the jo staff?
Matt Pasquinilli emphasizes controlling the angle of attack with your top hand while applying forward pressure with your bottom hand, allowing you to strike targets straight down the middle or at angles to the temple, clavicle, ribs, or knee.
How do I defend against a bladed weapon with the jo?
Matt Pasquinilli notes that hitting the side of the blade is critical because blades are typically only sharp on one or two sides—not the edge you're targeting—so strike the flat side of the blade rather than attempting to block the sharp edge directly.
How does the Standard Jo Block work?
Fundamental blocking technique using the jo shaft to receive and redirect an incoming sword or staff attack.
Where does the Standard Jo Block come from?
The standard jo block represents the foundational defensive technique in jojutsu, appearing in the first Seitei Jodo kata (Tsuki-zue) and in numerous Shinto Muso-ryu techniques. The block is executed by holding the jo in a two-handed grip and positioning it to intercept the descending sword cut, absorbing force along the staff's axis.
Is the Standard Jo Block legal in competition?
Traditional martial arts: legal — Practiced in traditional kata/forms and weapon-specific competition under var…; IWUF: legal — Legal in wushu taolu if applicable; HEMA: legal — Legal in applicable historical weapon categories
How dangerous is the Standard Jo Block?
Danger rating 7/10. Very High — staff/bo/jo weapons generate significant blunt force; fracture risk
How do I set up the Standard Jo Block?
The standard setup chain: Assume Guard (Kamae/Hut) → Measure Distance (Ma-ai) → Initiate Cut/Thrust → Follow Through (Zanshin).
How do I defend against the Standard Jo Block?
Standard counters include: Parry (Absetzen) — deflect the incoming blade with a counter-displacement / Void (Step Back) — withdraw from measure to avoid the cutting arc / Counter-Cut (Nachreisen) — strike into the opponent's opening during their attack.
What are the variants of the Standard Jo Block?
Common variants: Standard cut (primary cutting angle from the ready stance); Thrust (tsuki) (straight thrust targeting the throat, chest, or face); Rising cut (kiri-age) (upward diagonal cut from low to high); Diagonal cut (kesa-giri) (downward diagonal cut following the kimono line).
How effective is the Standard Jo Block in competition?
Standard jō blocks are performed in AJKF jōdō kata competition.
What are common mistakes when doing the Standard Jo Block?
Top errors to watch for: Receiving the strike at 90 degrees — a perpendicular block absorbs maximum impact; angle the jo to deflect / Not stepping offline — the body must move off the attack line; relying on the block alone risks being overpowered / Keeping the rear hand passive — the rear hand drives the counter-thrust; it must be active and ready / Gripping too tightly — the hands need to slide and adjust during and after the block; a rigid grip prevents this.
What are other names for the Standard Jo Block?
The Standard Jo Block is also known as Jodan Jo Uke, Basic Jo Block, Standard Jodo Block.