Sports That Trigger Patellar Tendonitis — And What You Can Do About It

You might think patellar tendonitis (aka “jumper’s knee”) only affects elite athletes who jump all day. But it can strike in a wide range of sports, from basketball to CrossFit to obstacle racing.

What these activities have in common isn’t always obvious, but they all load the patellar tendon in ways that can lead to tendonitis and long-term setbacks.

To reduce your risk and to stop the pain from getting worse, it’s crucial to understand which sports are most likely to trigger patellar tendonitis and what you can do to prevent it.

What Is Patellar Tendonitis and Why Sports Can Trigger It

Patellar tendonitis (also known as jumper’s knee) is a painful overuse injury that affects the tendon connecting your kneecap to your shinbone. It often begins subtly, with pain just below the kneecap during or after activity, and can progress to constant pain that interferes with movement.

But why do some sports seem to trigger it so reliably?

The answer lies in how certain sports load the tendon. Movements involving explosive jumping, abrupt deceleration, or repetitive landing place intense stress on the patellar tendon. These mechanical loads can exceed the tendon’s capacity to adapt, especially when rest and recovery are inadequate.

To learn which sports are the worst offenders, keep reading. Some may surprise you.

High-Risk Sports for Patellar Tendonitis: The Top 5 Offenders

Numerous studies have identified certain sports with disproportionately high rates of patellar tendinopathy. Based on epidemiological data and studies like Hutchison (2019), Florit (2023), and Nutarelli (2023), these are the top five:

Notably, patellar tendonitis in volleyball and basketball players can affect up to 45% of elite athletes according to Lian et al.

If you’re involved in any of these sports, you’re not alone. But you can protect your knees. The free email course linked below shows you how.

Here’s a fascinating tidbit:

Indoor volleyball and beach volleyball can cause slightly different types of tendonitis. While the indoor variant is a high-risk sport for patellar tendonitis due to repetitive jumping on a hardwood surface, beach volleyball is played on sand, which absorbs impact. This means the patellar tendon is safer from high eccentric loads during landing, as the sand absorbs much of the energy.

However, in ambitious players, beach volleyball can cause quadriceps tendinopathy due to jumps that start from a very deep knee angle.

Lesser-Known Sports That Still Trigger Patellar Tendonitis

When people think of patellar tendonitis, they often picture classic jump-heavy sports like volleyball or basketball. But recent research shows the risk extends far beyond those obvious examples.

According to Kadam (2023), it’s not just about how high you jump, but how well you move. Poor movement control and repetitive strain can lead to progressive micro-damage in the tendon, even in sports that don’t traditionally involve vertical jumping.

These Surprisingly Risky Sports Share the Same Tendon-Stressing Patterns:

• CrossFit – Deep squats, box jumps, and Olympic lifts load the knees under speed and fatigue
• Hyrox – Repeated sled pushes and weighted lunges with poor form amplify knee stress
• Obstacle Course Racing (e.g., Tough Mudder, Spartan Race) – Eccentric landings, crawling, and sprinting on uneven terrain
• Parkour / Freerunning – High-impact landings from elevation with uncontrolled knee angles
• Plyometric Training – Box jumps and depth drops without proper technique
• Gymnastics – Explosive takeoffs and landings in complex movement patterns

What these activities have in common isn’t just high volume or intensity, it’s uncontrolled movement patterns under speed, fatigue, or load. That’s where tendon stress accumulates.

BUT: Tendonitis isn’t just about overload or jumping!

Over 40 hidden factors can contribute to higher tendon stress when you’re moving and reduced tendon healing during rest. These invisible blockers can create the perfect breeding ground for recalcitrant patellar tendonitis that just won’t go away, no matter what you try, as the following reader story shows:

“I have just been on holiday and played football and tennis and just ran around with my son (11) for the first time in 3 years. My son says ‘thank you’ as well.”
 
– Fionn McDonagh

Ready for one more surprise?

A Surprising Group at Risk: Fast Bowlers in Cricket

You might expect jumper’s knee in basketball or volleyball, but in cricket?

A 2023 study by Kadam et al. revealed that recreational fast bowlers in cricket also show a notable prevalence of patellar tendinopathy. Despite being a non-jumping sport, the bowling action places intense eccentric stress on the front knee during the plant and deceleration phase.

Think about it: each fast bowling stride ends with a stiff, explosive block with the front leg and this is repeated hundreds of times in a session. That repeated high-load deceleration is exactly what stresses the patellar tendon.

If you’re a bowler dealing with nagging pain just below the kneecap, you might be on the same path. The Tendon Insights course includes advice specific to non-jumping sports with hidden tendon loads.

Hidden Triggers: Gym Workouts That Stress the Patellar Tendon

You don’t need to be on a team to risk your knees. Certain gym exercises are also powerful triggers for patellar tendon overload:

• Heavy back squats (especially deep and fast-paced)
• Box jumps with stiff landings
• Leg press with full knee extension
• Olympic lifts like cleans and snatches

These moves load the tendon eccentrically and with speed, two risk factors of tendonitis. As mentioned earlier, poor movement control and repetitive strain increase micro-damage risk.

Wondering if your gym routine is hurting your knees? I cover this exact question (with a self-check) in my Tendon Insights course (free to join).

Why Running Can Cause or Worsen Patellar Tendonitis

While not a “jumping sport,” running is a frequent contributor to patellar tendonitis, especially in:

• Downhill running
• Sprint starts
• Poor shock absorption due to stiff form or weak glutes

Repetitive load without enough tendon recovery time leads to low-grade damage. Runners who also do CrossFit or strength training may unknowingly stack risk.

If your knee pain worsens after runs or comes on the next day, your patellar tendon may already be irritated.

What These Sports Have in Common — And What Makes Them Dangerous

Let’s break it down:

This combination – known as a “load spike without adaptation” – is central to most tendon injuries. If you’re training hard but skipping deload weeks, you’re in the danger zone.

Are You at Risk? Self-Test Based on Your Training Habits

Answer the questions below to assess your risk:

Self-Test:

1. How often do you train with high-intensity jumps, sprints, or heavy leg work?
2. Do you take regular rest days or deload weeks?
3. Does your knee hurt under the kneecap the day after intense training?
4. Can you press on the patellar tendon without discomfort?

If you answered “yes” to question 3 or 4, or “daily” to question 1, you may already be in the early stages of jumper’s knee.

Get ahead of it before it worsens. The Tendon Insights course walks you through science-backed strategies to reduce tendon stress without quitting your sport.

How to Keep Playing Without Making Your Knees Worse

You don’t have to give up your sport, but you do need to train smarter. Here are five proven tactics:

✅ Warm up with isometrics (e.g., wall sits, slow leg extensions)
✅ Use a weekly load tracker to avoid spikes
✅ Avoid deep knee flexion during flare-ups
✅ Train the glutes and calves to offload the knee
✅ Recover harder: sleep, protein, light movement, compression

Ready to fix your training plan? Grab the free Tendon Insights course below and get the warm-up protocol trusted by over 11,000 readers.

Want to Stop Playing in Pain?

If you already have patellar tendonitis, chances are your sport isn't the only culprit. You likely also have risk factors that contribute to tendon overload and prevent proper recovery.

The good news? Tendons can heal when given the right stimulus and often you don’t even have to stop training.

✅ Get a proven warm-up routine that protects your knees
✅ Learn how to train around pain without losing progress
✅ Avoid the 3 common mistakes that keep athletes stuck for years

Join the free Tendon Insights Course and start making real progress today.

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