Running Shoe Cushioning: What the Science Actually Says

Over the last two decades, the philosophy behind the amount of running shoe cushioning needed has shifted dramatically:

2005 (The Minimalist Era): Vibram released FiveFingers, sparking a global "barefoot" trend that stripped shoes down to almost zero cushioning to promote natural foot function.

2009 (The Maximalist Pushback): Hoka challenged the barefoot movement by launching maximalist shoes, introducing giant, super-thick foam soles designed to absorb maximum shock.

Present Era (The High-Stack Standard): The extreme thickness of maximalist shoes has become the new normal. Today, even standard daily trainers feature massive stacks of foam, while minimalist shoes have settled into a smaller, dedicated niche.

Whether a shoe has zero drop or a towering maximalist stack, its cushioning is heavily marketed to achieve two primary goals:

• Enhancing running efficiency.
• Reducing injury risk.

But does piling extra foam onto your shoes — or stripping it away entirely — actually keep your body healthy? Let's see what the science has to say about both ends of the spectrum.

When your foot contacts a surface, it pushes back with an equal and opposite force. Sports scientists call this Ground Reaction Force (GRF) and divide it into two distinct phases:

Impact Peak: The initial sharp spike of force the moment your foot comes into contact with the ground.

Active Peak: The smooth, sustained wave of force generated as you actively push off the ground to propel you forward.

The fundamental promise of a heavily cushioned shoe is that it will dampen that initial impact peak, sparing your joints. The fundamental promise of a minimalist shoe is closer to the opposite: without foam to rely on, your body is forced to develop softer, more protective landing mechanics on its own. Neither promise holds up cleanly once you put it in a lab.

When researchers began putting maximalist shoes into biomechanics labs, the results caught the running world off guard.

A landmark study discovered that runners wearing highly cushioned maximalist shoes exhibited stiffer leg landings and experienced 10.7% more impact peak force than those in conventional shoes.

Why? Because your brain expects a stable surface. When you place a thick, squishy material under your foot, your body instinctively alters its mechanics, landing harder and freezing the knee and hip joints to "find" the ground.

Minimalist shoes were sold on the opposite logic: less material means more feedback, which should mean lighter, more careful landings. Some runners do land softer this way, especially once they've spent real time adapting. But the research on outcomes is more sobering than the marketing.

A randomized controlled trial tracking 61 trained runners over 26 weeks found that switching to minimalist shoes led to significantly more running-related pain than staying in conventional shoes. This was most common once weekly mileage climbed past roughly 22 miles. The same study found that a runner's weight mattered a great deal: heavier runners in minimalist shoes faced a substantially higher injury risk than lighter runners in the same shoes, a pattern that didn't show up in the conventional-shoe group.

The 2025 systematic review mentioned above backs this up from a different angle. Across the data, minimalist shoes consistently caused a higher rate of force than both maximalist and conventional shoes, along with less stability at the ankle during landing. In other words: less foam doesn't just mean less protection from GRF, it can mean less control over how that force moves through your leg.

Neither maximalist nor minimalist cushioning is inherently bad; each simply shifts where the mechanical stress goes, and each has real evidence-based upsides.

Maximalist shoes:

• Localized Pressure Relief: Highly cushioned shoes drastically reduce localized pressure on the bottom of the foot, making them an excellent tool for certain runners.
• Eases Ankle Strain: Because maximalist geometry often incorporates a "rocker" sole that rolls you forward, it reduces the peak workload on the calves, Achilles tendon, and ankle joints.
• Enhanced Comfort: If a runner finds thick foam inherently more comfortable, their perceived exertion decreases, which can positively influence overall running economy.

Minimalist shoes:

• Better Ground Feel: Less material between your foot and the ground can sharpen your sense of surface and positioning, which some runners use to reinforce a lighter, more efficient stride.
• Strength and Mechanics Work: Used in small, controlled doses (short runs, drills, strides), minimalist shoes are a common tool for building foot and calf strength without committing to them for daily mileage.
• Encourages Forefoot/Midfoot Landing: The lack of heel cushioning naturally discourages hard rearfoot striking for many runners, which can be a useful cue during a gait retraining process.

Since science proves there is no single "best" cushioning level at either extreme, finding the right shoe requires a personalized approach. Skip the guesswork and try our proprietary AI fit quiz to find the best shoe for you.

Answer a few simple questions about your preferences, mileage, and injury history, and we'll instantly serve up your perfect footwear match.

The takeaway isn't that max cushioning is bad for your body, or that minimalist shoes are secretly dangerous — it's simply a reminder that foam, or the absence of it, cannot bypass the laws of physics. Massive stack heights do not eliminate impact forces; they merely redistribute them up the kinetic chain. Taking cushioning away doesn't eliminate impact either. It just speeds up how fast that force hits your body and how much control you have over it.

If you are transitioning to a highly cushioned shoe, a minimalist shoe, or a carbon-plated super shoe, integrate it gradually into your rotation to give your hips, knees, and connective tissue time to adapt to the new mechanical demands.

A landmark prospective study found that runners who regularly use more than one pair of running shoes (rotating different models) have a 39% lower risk of injury than those who run in the exact same shoe every single day. This is especially important if transitioning from a more conventional running shoe to a max cushion, minimalist, or "super shoe." If you'd like to learn more, please read our article Do Shoes Prevent Running Injuries?

Ultimately, your body's internal feedback is more accurate than any lab test: the best shoe for you is the one that feels completely natural, stable, and comfortable the moment you lace it up.