The Simple Trick to Fix Your Running Biomechanics and Protect Your Knees
- LeMar Johnson
- Apr 17
- 5 min read
Let’s be real for a second. If you’re over 40 and you’ve been hitting the pavement for a while, your knees have probably had a few choice words for you lately. Maybe it’s a dull ache after a long Saturday run, or perhaps a sharp “hey, watch it!” when you’re walking down the stairs on a Sunday morning.
We usually tell ourselves it’s just part of getting older. We buy more expensive shoes, we slather on the Tiger Balm, and we pray to the marathon gods that our joints hold out for one more season. But what if the problem isn't your age? What if it’s just a tiny glitch in your running biomechanics?
At LOVE JOY RUN, we’re all about moving with purpose and longevity. We want you running well into your 80s, looking fly in your Run Bold gear, and feeling like a million bucks. The secret to that longevity isn’t a magic pill. It’s a simple trick involving your cadence and your posture.
The "Thud" vs. The "Glide"
Have you ever listened to yourself run? Next time you’re out, take the earbuds out for a minute. Are you hitting the ground with a heavy thud-thud-thud? Or are you light on your feet?
Most runners, especially as we get a bit more "distinguished" in age, tend to overstride. Overstriding happens when your foot lands way out in front of your body. When this happens, your leg is usually pretty straight. That straight leg acts like a pogo stick with no spring, every ounce of impact travels directly from the pavement, through your heel, and straight into your knee joint.
Ouch. No wonder it hurts.
The simple trick to fix this? Increase your cadence.
The Magic Number: 5%
Research shows that if you increase your step rate (cadence) by just 5%, you can decrease the impact forces on your knees by about 20%. Think about that. A tiny change in how fast your feet move can lead to a massive reduction in pain.
When you take quicker, shorter steps, your foot naturally lands closer to your center of gravity. You stop reaching forward, and you start landing under your hips. This naturally creates a slight bend in your knee upon impact, about 20 degrees is the sweet spot. That bend is your body's built-in shock absorber.
A close-up of a runner's mid-stride, focusing on the slight bend in the knee and the foot landing directly under the hips on a sunlit path.]
How to Find Your Cadence
You don't need a PhD in physics to figure this out. Most modern running watches track your cadence automatically. If yours doesn't, just count how many times your right foot hits the ground in 60 seconds and multiply by two.
A lot of casual runners sit around 160 steps per minute (SPM). The "gold standard" is often cited as 180 SPM, though if you're taller, 170-175 might be your happy place. Don't try to jump from 160 to 180 overnight. That’s a recipe for a different kind of injury. Just aim for that 5% increase. If you're at 160, try to hit 168. It’ll feel weird at first, like you’re taking baby steps, but your knees will thank you within the first mile.
Run Tall, Run Proud
The second half of this biomechanics trick is your posture. As we get tired (or as we spend all day hunched over a laptop), we tend to slump. We lean forward from the waist, or worse, we lean backward and "sit" into our stride.
Neither of these is great for your joints.
Think about running "tall." Imagine there’s a string attached to the crown of your head, pulling you gently toward the sky. Keep your chest open and your gaze about 10 to 15 feet ahead of you. When your posture is upright, your hips stay in a neutral position, which allows your glutes to actually do their job.
Fun fact: Your glutes are the biggest muscles in your body. If they aren't firing because you're slumped over, your knees have to pick up the slack. And trust me, your knees are not qualified for that promotion.
A runner moving with perfect upright posture, chest open and head held high, looking confident and energetic.]
Soft Knees are Happy Knees
While you're working on that quicker cadence and tall posture, focus on "quiet feet." Try to run so softly that you couldn't hear yourself if you tried. This naturally encourages those "soft knees" we talked about.
A straight-leg landing is a jarring landing. A bent-knee landing is a controlled landing. By keeping a slight flex in your joints, you’re using your muscles (quads, calves, and glutes) to handle the load instead of letting your cartilage take the beating.
The 15-Minute Support System
Now, I know we said this was a "simple trick," and it is. Changing your cadence is a mental shift you can make right now. But, if you want to make that shift permanent, you need a little bit of strength to back it up.
You don't need to spend hours in the gym. 10-15 minutes of basic lower-body work twice a week is plenty. Squats, lunges, and step-ups are the "Big Three" for runners. They stabilize the hips and strengthen the muscles surrounding the knee. When your "chassis" is strong, your biomechanics stay crisp even when you're hitting mile 10.
If you’re looking for a crew to help keep you accountable with these strength goals or just want some folks to run with while you practice your new cadence, check out our community groups. There’s nothing like a bit of group energy to keep you moving forward.
Look Good, Move Better
There’s a psychological component to running biomechanics, too. It’s hard to run "tall and proud" if you feel like a literal swamp monster in your old, tattered college t-shirt.
There’s a reason we put so much love into the LOVE JOY RUN apparel. When you put on gear that fits well and looks intentional, you carry yourself differently. You stand a little straighter. You move with a bit more purpose. It sounds like marketing fluff, but try it. Put on a fresh kit, hit the pavement, and tell me you don’t feel more like an "athlete" and less like a "person who is struggling to jog."
Let’s Wrap This Up
Fixing your running biomechanics isn't about reinventing the wheel. It’s about making small, mindful adjustments that allow your body to do what it was designed to do: move.
Shorten the stride: Increase your cadence by 5%.
Land soft: Keep a 20-degree bend in that knee.
Run tall: Keep your head up and your chest open.
That’s it. No fancy equipment (unless you want some new threads), no expensive physical therapy, just you, your breath, and a slightly faster pitter-patter of feet.
Are you ready to give your knees the break they deserve? Try the 5% increase on your next run and see how you feel. We’d love to hear about your progress! Head over to our discussion board and let us know if your "quiet feet" are making a difference.
Stay moving, stay joyful, and let’s keep those knees happy for the long haul.
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