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Slant boards for squats: what raising your heels changes and which board to pick
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- Low-angle squat wedge pair. Best for: Lifters who want a little more depth and an upright torso. See options on Amazon
- Steep wide squat wedge. Best for: Quad-focused training and experienced users. See options on Amazon
- Adjustable slant board. Best for: People who want one board for both squats and calf stretches. See options on Amazon
- Weightlifting shoes with a raised heel. Best for: Lifters who squat under a bar often. See options on Amazon
What raising the heels does to a squat
In a normal squat, how far your knees can travel forward is partly limited by ankle flexibility. When the ankles run out of range, the hips push back and the chest tips forward. Standing with your heels on a slope gives the ankles a head start.
A 2022 study in the journal Human Movement compared back squats barefoot, on a 25 mm wedge and on a 50 mm wedge in 15 experienced recreational weightlifters. As the wedge got higher:
- trunk inclination decreased, meaning a more upright torso, and
- knee range of motion increased, meaning a deeper knee bend.
The authors concluded that a heel wedge can be a low-cost, viable way to optimize back squat technique. For comparison, they note that official weightlifting shoes raise the heel 13 mm. Both maker listings below pitch their wedges for quad emphasis, so expect the front of the thigh to work harder.
Two different uses: heel-elevated squats and decline squats
| Heel-elevated squat | Decline squat | |
|---|---|---|
| Goal | Better squat depth and posture, more thigh emphasis | Loading the patellar tendon in rehab |
| Typical setup | Both heels on a low or moderate wedge | Standing on a board of about 25 degrees |
| Who leads it | You or a coach | Best guided by a physical therapist or sports clinician |
The decline squat comes from tendon research. A pilot study in the British Journal of Sports Medicine had 17 patients with long-standing patellar tendon pain do slow lowering squats, 3 sets of 15, twice a day for 12 weeks. The group on a 25 degree decline board had a significant drop in pain and six returned to sport, while only one athlete in the flat-squat group returned to previous activity. The authors called the short-term results encouraging, but it was a small, non-randomized pilot, so it is not strong proof.
How to choose a board for squats
Two maker examples show the range:
- Low wedge pair: 10 degrees, each 13 inches wide, 6 inches deep and 1 inch high, in molded ABS plastic. The maker pitches them for elevating the heels to improve ankle mobility and squat depth.
- Steep single wedge: 26.5 degrees, 20 inches wide, 10.5 inches deep and 5 inches high, with a ribbed base and gripping top. The maker pitches it for quad-focused, deeper squats.
What to weigh up:
- Angle. A low angle changes the squat a little and is easy to adapt to. A steep angle changes it a lot and is closer to the decline-board setup.
- Width. A single wide board keeps both feet on one surface. A pair lets you set your own stance width.
- Grip. Look for a textured top and a base that will not slide when loaded.
- Adjustability. An adjustable slant board also works for calf stretches, though check that its platform is wide enough for your squat stance.
Setting up and squatting safely
- Heels on the high end, toes on the low end, feet about hip to shoulder width.
- Start with body weight or a light weight held at the chest before loading a bar.
- Let the knees travel forward over the toes while keeping the torso tall; track the knees in line with the feet.
- Use a load you can control. Mayo Clinic suggests a weight or resistance that tires the muscles after about 12 to 15 reps, with good form.
- Stop any exercise that causes pain. Mayo Clinic advises trying a lower weight or trying again in a few days.
Knee pain at the front of the knee that does not settle deserves a proper assessment before you load it on a steep board. If knee support is on your list, see knee sleeves for squats.
What to look for when you buy
Low-angle squat wedge pair
Best for: Lifters who want a little more depth and an upright torso
A 10 degree, 1 inch high pair gives a mild heel lift, and separate wedges let you set your own stance width.
Watch out: Two pieces can shift apart under load; check the base grip.
See options on AmazonSteep wide squat wedge
Best for: Quad-focused training and experienced users
One maker's 26.5 degree wedge is 20 inches wide with a ribbed base, close to the 25 degree slope used in decline squat research.
Watch out: A steep slope changes the squat a lot; build up gradually and stop if the knee hurts.
See options on AmazonAdjustable slant board
Best for: People who want one board for both squats and calf stretches
Adjustable boards let you start low and raise the angle, and they double as a calf stretcher.
Watch out: Smaller platforms may be too narrow for a squat stance.
See options on AmazonWeightlifting shoes with a raised heel
Best for: Lifters who squat under a bar often
The Human Movement study notes official weightlifting shoes raise the heel 13 mm, a built-in version of a heel wedge.
Watch out: A fixed, modest lift; they are not suited to running or walking around.
See options on AmazonQuestions people ask
- Do slant boards help you squat deeper?
- They can. In one study of 15 lifters, higher heel wedges increased knee bend and reduced trunk lean during back squats.
- What angle slant board is best for squats?
- There is no single best. Low wedges around 10 degrees give a mild change; steep boards around 25 degrees give a bigger change and are the angle used in decline squat research.
- Are decline squats good for knee pain?
- A small pilot study found decline squats reduced pain in people with long-standing patellar tendon pain, but it was preliminary. Do them with a clinician's plan rather than on your own.
- Is a slant board better than lifting shoes?
- It depends. A board can be steeper and adjustable; shoes raise the heel a fixed amount (13 mm for official weightlifting shoes) and move with you.
Sources
- Comparing the kinematics of back squats performed with different heel elevations (termedia.pl), Human Movement (2022)
- A pilot study of the eccentric decline squat in the management of painful chronic patellar tendinopathy (bjsm.bmj.com/content/38/4/395), British Journal of Sports Medicine
- Rogue 13 inch Resin Squat Wedge Pair (10 degree) (roguefitness.com), Rogue Fitness (maker)
- Rogue 20 inch Resin Squat Wedge (26.5 degree) (roguefitness.com), Rogue Fitness (maker)
- Strength training: Get stronger, leaner, healthier (mayoclinic.org), Mayo Clinic