Mace 360 — Partial Arc: A Complete Guide
Quick Intro
Mace 360 — Partial Arc is a shoulder mobility drill performed by holding the mace close to the ball-end with both hands, swinging it over one shoulder and only partway behind the head, stopping before the point of maximum posterior shoulder demand, then reversing back to the front. This building-block version, starting with as little as 2-3kg, develops the pattern and posterior shoulder mobility incrementally before the full circle asks for the complete range at once.
Equipment Needed
A light Persian mace, also called a gada, of about 2 to 3 kilograms to begin with.
Why It Matters
This is a partial version of the same overhead pattern the full 360 trains. Because the arc stops before the most demanding posterior section, the shoulder gets to build comfort with an offset-weighted implement without immediately having to manage the circle’s hardest transition. It works well as a building block for anyone whose shoulder isn’t ready for the full circle’s complete range yet.
When to Do It
Place this early in a session, as preparation for building toward the full mace 360, or as a starting point for anyone new to mace work. It also works well as a standalone drill for building comfort with an offset-weighted implement before the full circle’s demand gets introduced. Anyone with a diagnosed shoulder condition should get clearance from a doctor or physical therapist before swinging a weighted implement partway behind the head.
Getting Ready
Holding the mace close to the ball-end with both hands for a moment first settles the grip before the first partial arc. Trying one slow pass toward one shoulder, stopping well before any strain, is a reasonable way to gauge how much posterior range feels available that day.
Step-by-Step Instructions
- Hold the mace close to the ball-end with both hands.
- Swing it over one shoulder.
- Stop before the point of maximum posterior shoulder demand.
- Reverse back to the front.
- Perform 6-8 partial arcs per direction.
How Many, How Often
| Level | Partial Arcs (per direction) |
|---|---|
| Beginner | 6 |
| Intermediate | 7 |
| Advanced | 8 |
Stopping the arc at the first sign the shoulder is running out of clean, controlled range matters more here than how far behind the shoulder the mace travels. This is a building-block version, not a lesser workout, and respecting that stopping point is what makes it effective.
Modifications and Variations
Harder: Mace 360. Continuing the same swing all the way through the full 360-degree circle, once the partial arc’s posterior range feels confident, adds the most demanding section of the pattern, the complete transition behind the head.
Common Mistakes to Avoid
Pushing past the point where control starts to break down. Continuing the arc further behind the head after clean control has already been lost defeats the purpose of a building-block version. Stopping at the first sign of that breakdown, every rep, is what keeps this drill doing its job safely.
Letting the mace drift away from the head during the partial arc. Even at this reduced range, an implement that moves away from the body increases the lever arm and adds strain the partial version is meant to avoid. Keeping the mace close throughout, even on a shorter path, matters just as much as on the full circle.
Rushing straight to the full circle before the posterior range feels confident. Skipping ahead to the complete 360 before this partial version feels smooth and controlled risks losing control at the section this drill is meant to prepare the shoulder for. Building that confidence here first makes the eventual full circle considerably safer.
After Your Set
A few gentle shoulder rolls and a brief overhead shoulder stretch are a reasonable way to close out a set that just asked the shoulder to build posterior range incrementally.
Going Deeper
The marker of progress here isn’t how far behind the shoulder the mace travels, it’s whether the stopping point can move slightly further back each session while control stays clean. Once that incremental progress holds steady across several sessions, moving to the full circle becomes a reasonable next step. Pushing the stopping point back too quickly usually just means the shoulder is being asked to adapt faster than the posterior range can.
How to Know You’re Improving
- The stopping point can move slightly further back while control stays clean.
- The mace stays close to the head throughout the partial arc.
- The reversal back to the front feels smooth, with no abrupt stop.
- Both directions manage a similarly controlled partial arc.
- The full 360-degree circle starts to feel like a reasonable next step.
Muscles Worked
- Anterior Deltoid (the front of the shoulder cap, active as the mace swings over the shoulder on a clipped arc)
- Posterior Deltoid (the back of the shoulder cap, active through the partial posterior range)
- Rotator Cuff (the small muscle group deep at the shoulder joint, controlling the mace through a shortened arc behind the head)
- Trapezius (the muscle spanning the upper back and neck, stabilizing the shoulder blades during the arc)
- Rhomboids (the muscles between the shoulder blades, active as the mace approaches the stopping point)
FAQ
Why stop the arc before the full circle rather than just moving slowly through it? Stopping deliberately before the most demanding posterior section removes the challenge of that section, a different thing from simply slowing down while still asking the shoulder to manage it. That distinction is what makes this a building block, not just a slower run through the full circle.
Why start with such a light mace, 2-3kg? A light mace lets the incremental range-building happen without also fighting much resistance, which keeps the focus squarely on posterior shoulder mobility. Load is worth adding only once the full circle’s range is already established.
Is this a lesser workout than the full 360? No, it is a building block for a shoulder that isn’t ready for the complete range yet, not a diminished version of the same drill. Respecting the stopping point is what makes it useful, and rushing past it undoes that value.
Is some initial difficulty feeling where to stop the arc normal? Yes, learning to recognize the point where clean, controlled range starts to run out is a skill, and it typically becomes clearer with repeated practice. A sharp, catching sensation in the shoulder is a different matter, worth getting checked by a doctor or physical therapist.
When is it time to try the full 360-degree circle? Once the stopping point has moved close to the natural limit of the posterior range with control staying clean throughout, the full circle is a reasonable next step, since the partial arc has already built most of the range it demands.
Related to Mace 360, the harder full-circle version.