Why use a plate-loaded crunch machine instead of floor crunches or cable crunches?

Floor crunches provide no resistance at the fully stretched starting position, which is where the rectus abdominis is most lengthened and where the hypertrophy stimulus is greatest. The DSH025 applies plate-loaded resistance throughout the entire arc including the fully stretched position, delivering constant tension that bodyweight and cable alternatives cannot replicate at meaningful progressive loads. Training the abdominals under progressive plate resistance produces the same muscle development response as loading any other muscle group.

What does the three-position seat angle adjustment do?

The seat angle changes the orientation of the pelvis and trunk relative to the crunch linkage, which shifts which part of the anterior core carries the primary load. The standard position targets the central rectus abdominis through a direct forward crunch path. The adjusted positions rotate the crunch direction to load the internal and external obliques as the primary working muscles. Rotating through these positions across a core training session covers the full anterior core from central to lateral without changing machines.

Why do the handles need to be extra long?

Users with limited shoulder mobility or narrow shoulder width cannot comfortably grip a short fixed handle without pulling the shoulder forward into excessive flexion, which activates the upper trapezius and erector spinae to stabilise the shoulder rather than keeping the effort in the abdominals. The extra-long rubber-coated handles allow each user to grip at the point along the handle length that keeps the shoulder naturally positioned, removing this compensatory pattern so the abdominals receive the full training stimulus.

What is the role of the leg support pads?

The leg pads anchor the lower legs so they do not lift during the crunch contraction. When the legs are unsupported, the hip flexors activate strongly to prevent the feet from rising off the floor as the torso drives downward. This hip flexor activation competes with the abdominal contraction for which muscle group is primarily driving the movement. The leg pads remove this competition by fixing the lower limb position, ensuring the abdominals are the sole primary driver from the first rep to the last.

How much weight should I use to start?

Start with a light bilateral load that allows 15 to 20 full-range reps with a deliberate two-second eccentric return on each rep. The goal in the first sessions is to establish clean abdominal-only contraction without hip flexor compensation before increasing load. Once you can feel the abs working cleanly through the full linkage arc across every rep, progress the plate load at the same rate as any other muscle group in your programme.

What Dynasty Fitness machines pair with the DSH025 for a complete core training area?

The DSH025 covers the anterior crunch pattern for rectus abdominis and oblique development under plate-loaded progressive resistance. Pair it with the Abdominal Crunch DRE8035 for a selectorized alternative suited to circuit-based training or members who prefer a weight stack setup. The Abdominal/Back Extension DRE8009 balances anterior core training with posterior core back extension work from a single selectorized station. For lower back and posterior chain core strength, the Reverse Hyper DPB407 and Multi Back Extension DPB410 or DRE8040 complete the full core training area from both the front and back of the trunk.

Front view of the premium Abdominal Crunch DSH025 Upper Body (Abs) by The Dynasty Fitness

Exercises and muscles targeted

The plate-loaded crunch applies resistance through the full arc from full stretch to peak contraction, unlike floor crunches which lose tension exactly where the abs are most lengthened. The 3-position seat angle extends this loaded training to the obliques as well as the rectus abdominis.

Exercise	Muscles Targeted
Abdominal Crunch (standard seat)	Rectus Abdominis (primary), Transverse Abdominis (secondary), Hip Flexors (minimised by leg pads)
Oblique Crunch (adjusted seat)	External Obliques, Internal Obliques (primary), Rectus Abdominis (secondary)
Isometric Hold (peak contraction)	Rectus Abdominis (sustained isometric), Transverse Abdominis, Obliques (co-contraction)
Slow Eccentric Crunch	Rectus Abdominis (eccentric lengthening for hypertrophy stimulus)
Partial ROM (peak arc only)	Rectus Abdominis — Upper and Middle Fibres (inner arc emphasis, used for burnout sets)

How to setup and use

Setting Up the DSH025 Abdominal Crunch

Load plates onto both bilateral loading points, starting conservatively for the first session.
Set the seat to one of 3 angles for rectus abdominis or oblique emphasis.
Sit back against the angled pelvic pad, allowing the natural posterior tilt.
Position your lower legs firmly against the leg support pads.
Grip the extra-long handles at the point requiring no excessive shoulder reach.

Performing the Crunch

From the full stretch, drive the torso downward by contracting the abs.
Follow through to full contraction and hold briefly before returning.
Lower back to full stretch over two to three seconds without rushing.
Keep the pelvis and legs anchored throughout to stop hip flexor takeover.
For oblique sets, adjust the seat angle between sets as needed.

Who this machine is built for

Serious home gym builders: Delivers progressive plate-loaded ab training with your existing Olympic plates at 661 lbs capacity in a compact 48.0"x44.9" footprint.

Bodybuilders and physique athletes: Builds the abdominal thickness and separation that floor crunches maintain but cannot grow, with the oblique seat angle completing the full midsection.

Commercial gym owners: Serves members who expect progressive resistance on abs the same way they train every other muscle, with a matte black finish at the premium end of core equipment.

Personal training studios: Self-positioning pelvic and leg pads remove the coaching burden of lumbar neutral and hip flexor compensation.

Powerlifters and strength athletes: Builds anterior bracing strength under the same progressive overload principle applied to competition lifts.

University and college athletic departments: Supports trackable, progressive core loading rather than treating core work as a bodyweight accessory circuit.

Owner's Manual

Access the complete assembly guide, parts list, and maintenance schedule below.

Download Owners Manual

Shipping & Delivery

All Dynasty Fitness equipment ships free across the 48 contiguous US states via freight carrier. If the product description says preorder, we'll send you an estimated delivery date via email.

Estimated delivery: 7–14 business days from order confirmation. You will receive a tracking number and a delivery window confirmation call before your shipment arrives. Deliveries are curbside standard, white glove delivery to room of choice is available at checkout.

Returns: Free within 30 days of delivery. Items must be in original condition and packaging. Refunds processed within 5 business days of return receipt.

Questions? Contact our team at:
📧Email: info@thedynastyfitness.com
📞Call: +1 (213)-584-0858

Need a buying guide?

Looking for one to one support before making final decision?
Feel free to contact us. Our expert support team would love to assist you.

Need Installation Help?

We have partnered with another company to help provide installation around the country. Please use the link below to see the price per machine for installation
See Installation Rates

Payment & Security

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Save 10%

Abdominal Crunch DSH025

$1,989.00

$1,989.00 ~~$2,219.00~~ 10% off (Save$230.00 )

Commercial Grade
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The DSH025 Abdominal Crunch is a plate-loaded core machine that trains the rectus abdominis and obliques through a precision linkage system that follows the natural curve of the spine. A 3-position seat angle shifts loading between the rectus abdominis and both oblique groups.

Built from PT60x120x2.5mm steel in matte black with a 661 lb bilateral capacity at 48.0"x44.9"x64.4", the DSH025 delivers heavy progressive plate-loaded ab training in one station.

Precision linkage arc: Follows the natural spine curve through the full crunch, delivering smooth, isolated tension floor crunches cannot match.
3-position seat angle: Shifts emphasis between rectus abdominis and both oblique groups from one machine.
Extra-long rubber handles: Fit different shoulder mobility ranges without forcing excessive flexion that pulls effort away from the abs.
Angled pelvic pad: Matches natural posterior pelvic tilt, keeping the pelvis stable through every rep.

How to Assemble Abdominal Crunch Machine DSH025

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Exercises and muscles targeted

Exercise	Muscles Targeted
Abdominal Crunch (standard seat)	Rectus Abdominis (primary), Transverse Abdominis (secondary), Hip Flexors (minimised by leg pads)
Oblique Crunch (adjusted seat)	External Obliques, Internal Obliques (primary), Rectus Abdominis (secondary)
Isometric Hold (peak contraction)	Rectus Abdominis (sustained isometric), Transverse Abdominis, Obliques (co-contraction)
Slow Eccentric Crunch	Rectus Abdominis (eccentric lengthening for hypertrophy stimulus)
Partial ROM (peak arc only)	Rectus Abdominis — Upper and Middle Fibres (inner arc emphasis, used for burnout sets)

How to setup and use

Setting Up the DSH025 Abdominal Crunch

Load plates onto both bilateral loading points, starting conservatively for the first session.
Set the seat to one of 3 angles for rectus abdominis or oblique emphasis.
Sit back against the angled pelvic pad, allowing the natural posterior tilt.
Position your lower legs firmly against the leg support pads.
Grip the extra-long handles at the point requiring no excessive shoulder reach.

Performing the Crunch

From the full stretch, drive the torso downward by contracting the abs.
Follow through to full contraction and hold briefly before returning.
Lower back to full stretch over two to three seconds without rushing.
Keep the pelvis and legs anchored throughout to stop hip flexor takeover.
For oblique sets, adjust the seat angle between sets as needed.

Who this machine is built for

Serious home gym builders: Delivers progressive plate-loaded ab training with your existing Olympic plates at 661 lbs capacity in a compact 48.0"x44.9" footprint.

Bodybuilders and physique athletes: Builds the abdominal thickness and separation that floor crunches maintain but cannot grow, with the oblique seat angle completing the full midsection.

Commercial gym owners: Serves members who expect progressive resistance on abs the same way they train every other muscle, with a matte black finish at the premium end of core equipment.

Personal training studios: Self-positioning pelvic and leg pads remove the coaching burden of lumbar neutral and hip flexor compensation.

Powerlifters and strength athletes: Builds anterior bracing strength under the same progressive overload principle applied to competition lifts.

University and college athletic departments: Supports trackable, progressive core loading rather than treating core work as a bodyweight accessory circuit.

Owner's Manual

Access the complete assembly guide, parts list, and maintenance schedule below.

Download Owners Manual

Shipping & Delivery

All Dynasty Fitness equipment ships free across the 48 contiguous US states via freight carrier. If the product description says preorder, we'll send you an estimated delivery date via email.

Returns: Free within 30 days of delivery. Items must be in original condition and packaging. Refunds processed within 5 business days of return receipt.

Questions? Contact our team at:
📧Email: info@thedynastyfitness.com
📞Call: +1 (213)-584-0858

Need a buying guide?

Looking for one to one support before making final decision?
Feel free to contact us. Our expert support team would love to assist you.

Need Installation Help?

We have partnered with another company to help provide installation around the country. Please use the link below to see the price per machine for installation
See Installation Rates

Payment & Security

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Abdominal Crunch DSH025

$1,989.00

$1,989.00 ~~$2,219.00~~ 10% off (Save$230.00 )

Key Features

Precision Linkage System

The movement arm follows a linkage path matching the spine's natural curve, rather than a single fixed pivot. This keeps resistance aligned with the abdominal contraction direction from full stretch through peak contraction, reducing the spinal compensation a mismatched arc creates.

3-Position Adjustable Seat Angle

Three seat angles shift the crunch orientation between the rectus abdominis and both oblique groups. A fixed-angle crunch machine trains only the central abs; this system covers the full anterior core from one station across a session.

Extra-Long Rubber-Coated Handles

Extended handles let users grip at whatever point keeps their shoulders relaxed rather than forcing forward flexion. Excess shoulder reach activates the upper trapezius and erector spinae to stabilise, pulling effort away from the abs.

Angled Rear Pelvic Support Pad

The pad angle matches the natural posterior pelvic tilt that occurs as the abs contract. A vertical pad forces an anterior tilt that partially cancels this, reducing the effective contraction range through the crunch.

Leg Support Pads

Firm, cushioned pads anchor the lower legs so they cannot lift during the crunch. Without this anchor, the hip flexors activate to hold the feet down, competing with the abs for who drives the movement.

Product Information
Product Name	Abdominal Crunch
Model	DSH025
Series	DSH Plate Loaded Series
Product Type	Plate-Loaded Seated Abdominal Crunch Machine
Primary Function	Seated plate-loaded abdominal crunch — rectus abdominis and oblique development
Target Muscles	Rectus Abdominis (primary), External and Internal Obliques (seat angle dependent), Transverse Abdominis (secondary)
Grade	Commercial
Colour	Matte Black
Dimensions and Weight
Length	48.0 in (122.0 cm)
Width	44.9 in (114.0 cm)
Height	64.4 in (163.5 cm)
Net Weight	282 lbs (128 kg)
Load Capacity
Maximum Load Capacity	661 lbs (300 kg) — 330 lbs (150 kg) per side
Loading System	Plate-loaded — Olympic plates, bilateral weight loading
Adjustability
Seat Angle Positions	3 positions — targets rectus abdominis, internal obliques, and external obliques
Pads, Handles, and Frame
Handles	Extra-long rubber-coated — accommodates varying shoulder mobility and width
Pelvic Support Pad	Rear angled pad — matches natural posterior pelvic tilt during crunch
Leg Support Pads	Firm and cushioned — anchors lower limbs, limits hip flexor involvement
Seat	Spacious — provides legroom and stable bilateral positioning
Movement System	Precision linkage — follows natural spine curve through full crunch arc
Main Frame Tubing	PT60×120×2.5mm rectangular steel
Finish	Matte black powder coat
Indoor Use Only	Yes

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Every machine that leaves Dynasty Fitness carries the same promise: it is built to the commercial standard that professional training environments demand, priced so that standard is no longer exclusive to them, and backed by the support and warranty coverage that a long-term training investment deserves.

We are committed to equipment that stands the test of time — and to making sure the people who train the hardest have access to the tools that match their effort.