Smith Machine Shoulder Press
front deltoid
What moves the load, and what it costs
6.0MET
Front deltoid is the prime mover, with the triceps assisting. The fixed path removes the balance element, which lets you push closer to failure alone. It also fixes the bar line, so set the bench carefully.
Cue: Position the bench so the bar path passes just in front of the face, not through it.
SOURCE·2024 Adult Compendium of Physical Activities·FILED UNDER WEIGHTS, VIGOROUS·REVIEWED JUL 2026
SHARED AXIS · SEVEN VALUES FROM ONE TABLE · HIGHLIGHTED ROW IS THIS MOVEMENT
The compendium files smith machine shoulder press under a category, not a lift. Read the ladder as position, not precision: this is heavier work than sitting quietly by a factor of 6.0, and at the top end of what a gym floor produces.
Turning that MET value into a real energy cost
- Map the movement to a published category. The compendium measures categories of conditioning work, never individual lifts, so smith machine shoulder press is filed under Resistance training (weight lifting, free weight or machine), power lifting or body building, vigorous effort.
- Take the category's MET value — 6.0. One MET is the cost of sitting quietly, so this is 6.0 times resting metabolism.
- Multiply by 3.5 to get millilitres of oxygen per kilogram per minute, the unit the MET is actually defined in.
- Multiply by your bodyweight in kilograms and divide by 200. The result is kilocalories per minute of work.
- Count working minutes only. Under load, not under the roof — a set of eight is about 25 seconds of the hour you were there.
kcal/min = MET × 3.5 × body mass (kg) ÷ 200 Smith Machine Shoulder Press: 6.0 × 3.5 × 70 ÷ 200 = 7.35 kcal/min
SOURCE·ACSM metabolic equation + 2024 Adult Compendium of Physical Activities·REFERENCE BODY MASS 70 KG·REVIEWED JUL 2026
What is actually doing the work
| Muscle | Role | What it does here |
|---|---|---|
| Front deltoidAnterior deltoid | Prime mover | Raises the arm to the front (shoulder flexion) and assists horizontal adduction. Prime mover in overhead pressing, heavy synergist in every bench press. |
| TricepsTriceps brachii | Synergist / stabiliser | Straightens the elbow. The long head also crosses the shoulder, so it is stretched and loaded hardest with the arm overhead. |
The prime mover produces the movement against the resistance; synergists assist and stabilisers hold a joint still without moving it. An exercise trains the whole muscle it loads — there is no way to work only part of a muscle, and no exercise removes fat from the area around it.
Set up, then earn the rep
Smith machine, Bench. Every rep should look like the first one. The moment it stops looking like the first one, the set is finished.
PATTERN · PUSH
- Take the bar at shoulder height with the elbows slightly in front of the bar, not flared out to the sides.
- Stand with the feet hip to shoulder width, glutes and abs braced so the ribcage cannot flare — the press is as much a standing plank as an arm movement.
- Position the bench so the bar path passes just in front of the face, not through it.
- Pull the chin back out of the way, press the bar in a straight line past the face, then push the head through so the bar finishes over the middle of the foot.
- Lock out with the biceps beside the ears and the shoulder blades rotated up.
- Lower under control to the start position rather than dropping into the catch.
Where this one breaks down
Not theory. These are the faults you correct on a gym floor, and the correction that actually works.
Leaning back to get the weight up.
A press that turns into an incline bench press with a lumbar arch is telling you the weight is too heavy. Squeeze the glutes and let the range be honest.
Pressing around the face instead of past it.
The bar path should be as close to vertical as possible. Move the head back out of the way, not the bar forward.
Stopping short of a full lockout.
The top of the press is where the lower traps and serratus do their work, and it is the range most people skip.
Flared elbows at the start.
Elbows under and slightly in front of the load, not out at the sides.
Regress it, or progress it
Regress — earn it first
Prescription: load, reps, rest
Read off the goal, then hold the technique constant as the load climbs. Derived from the movement's mechanics, not invented for this page: a compound lift loads several joints, so it tolerates heavy loads and needs long rests.
| Goal | Sets | Reps | Rest | Notes |
|---|---|---|---|---|
| Strength | 3–5 | 3–6 | 3–5 min | Heavy loads need long rests. Cutting rest to two minutes turns a strength set into a conditioning set. |
| Muscle size | 3–4 | 6–12 | 90–180 sec | Take most sets to within one to three reps of failure. Total weekly hard sets per muscle matters more than the exact rep number. |
| Endurance / fat loss | 2–4 | 12–20 | 45–75 sec | Lighter loads and shorter rests. Fat loss is decided by the diet; this preserves muscle while it happens. |
| First month | 2–3 | 8–10 | 2 min | Well short of failure, same weight every set, until the movement looks the same on the last rep as the first. |
Time under load, in kilocalories
Read these as minutes of work, not minutes in the building. A set of eight takes about twenty-five seconds; the rest of the hour is rest, chalk and queueing.
Mapped category: Resistance training (weight lifting, free weight or machine), power lifting or body building, vigorous effort — 6.0 MET. That is the published category this movement is filed under, not a measurement of this specific lift.
Worked at 6.0 MET × 3.5 × 70 kg ÷ 200 = 7.35 kcal per working minute for a 70 kg adult. Scale it by your own bodyweight; the equation is linear. The full activity dataset lives at BurnLab.
SOURCE·2024 Adult Compendium of Physical Activities·CATEGORY VALUE, NOT A PER-EXERCISE MEASUREMENT·REVIEWED JUL 2026
If the rack is taken
Substitutes train the same prime mover through the same pattern with different kit. Computed from the muscle and pattern data on this card, not hand-picked to fill a grid.
Nothing at all to hand: Pike Push-Up is the closest match — same prime mover, same pattern, no kit.
Where it sits in a week
One movement is not a programme. The twelve templates put these in order, including 6 that need no gym at all.
The questions that come up on the floor
What muscles does the smith machine shoulder press work?
Smith Machine Shoulder Press is a compound movement in which the front deltoid is the prime mover, assisted by the triceps. Raises the arm to the front (shoulder flexion) and assists horizontal adduction. Prime mover in overhead pressing, heavy synergist in every bench press.
Is the smith machine shoulder press good for beginners?
Yes. It rates 2 out of 5 for technical difficulty on this site — learnable in a session or two; low injury cost if it goes wrong. Start with the lightest sensible load and two or three sets of 8–10.
What can I do instead of the smith machine shoulder press at home?
The closest no-equipment substitute is the pike push-up, which trains the same prime mover through the same movement pattern. If you own a little equipment, the standing dumbbell shoulder press is closer still. It will not load you as heavily, so use higher reps and slower tempo to make up the difference.
How many sets and reps of the smith machine shoulder press should I do?
For muscle size, 3–4 sets of 6–12 with 90–180 sec rest. For strength, 3–5 sets of 3–6 with 3–5 min rest. In your first month, 2–3 sets of 8–10, stopping well short of failure. Total weekly hard sets per muscle group matters more than the exact rep number in any of these ranges.
Does the smith machine shoulder press burn fat from the front deltoid?
No. No exercise removes fat from the area it trains — spot reduction has been tested repeatedly and does not happen. Training the front deltoid builds the muscle underneath; where body fat is lost from is decided by an overall calorie deficit and by your genetics, not by which exercise you chose.
Muscle roles follow standard kinesiology references and are described by joint action rather than by gym convention — see how this site is built. Energy figures are derived from the 2024 Adult Compendium of Physical Activities. Every reference is named and dated on the sources page. General information only — not medical or coaching advice. Load, form and progression should be adjusted to your own experience and any injury history. When in doubt, get coached in person.
SOURCE·Published exercise references·MUSCLE ROLES ASSIGNED BY JOINT ACTION·REVIEWED JUL 2026
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