Why do tight hips cause back pain? Surprisingly, the real source of persistent back pain may not be the spine itself, but the hips — a discovery made by Kumazawa J.T. that transformed him into one of the world’s most respected specialists in this field. Now, his technique is available for you to learn and apply.

At the heart of the issue lies hip joint contracture, particularly involving the iliopsoas muscle. When this deep hip flexor tightens, it pulls the pelvis forward, tipping it like a bowl and increasing the curve of the lower back. This posture places abnormal stress on spinal discs, joints, and surrounding muscles. The result is similar to wearing a heavy backpack on your chest — your spine leans backward to compensate, and that constant strain becomes exhausting.

Restricted hip mobility, especially in extension during walking, leads to the spine picking up the slack. But the spine isn’t designed for repetitive bending in place of the hips, which leads to fatigue, joint stress, and pain. It's like forcing open a stuck door by pushing the frame — eventually, the frame breaks.

When hip flexors become tight and the gluteal muscles weaken, the body’s muscular balance is thrown off. This imbalance causes the spine to absorb forces it shouldn’t, increasing the risk of injury. Picture a team lifting a table — if the people at the front do all the work while those at the back don’t help, the load tips forward and becomes unstable.

Stiff hips also rob the body of its natural shock-absorbing ability. Without proper hip movement, everyday actions like walking, climbing, or jumping send impact straight up the spine, accelerating wear and tear from bottom to top.

This mechanical chain reaction also distorts posture. Anterior pelvic tilt, a common result of hip tightness, exaggerates the lower back curve and causes compensatory changes like forward head posture and rounded shoulders. These postural shifts amplify strain and discomfort throughout the body.

The iliopsoas muscle is often the silent culprit. This deep flexor links the lumbar spine to the femur and, when tight, pulls the spine forward, compresses discs and nerves, and forces the lower back into overdrive. It can make walking, standing, and even lying flat painful. Most therapists overlook this muscle because it’s deep and hard to feel, but Kumazawa J.T. placed it at the center of his method — and that’s exactly why his approach succeeds where others fail.

Conventional treatments often focus only on the back, neglecting the real driver of the pain. Kumazawa’s method goes deeper. It releases the hidden tension in the iliopsoas through targeted manual therapy, restores proper hip extension, retrains walking and posture, and builds glute strength to rebalance the pelvis.

At the core of the Kumazawa Method is a simple truth: fix the hips, and the back will follow. This is the missing piece in back pain care — and the key to real, lasting relief.

2 Why Common Back Pain Treatments Don't Work

The secret behind Kumazawa J.T.’s 10-minute miracle for back pain has drawn patients from around the world to his clinic in Japan. These individuals, many of whom suffer from long-term, treatment-resistant low back pain, come seeking a solution they couldn’t find anywhere else. Remarkably, Kumazawa J.T. has been able to relieve such chronic pain in just 10 minutes using his unique technique. Now, through this online course, you have the opportunity to learn the exact same healing method that has transformed the lives of countless patients globally.

While attending one of Kumazawa J.T.'s live seminars would normally cost $3,000, this online version allows you to access the same groundbreaking content for a significantly lower tuition fee. And despite its effectiveness, this method is not based on magic, nor does it require special talent. It’s a simple, repeatable system that Kumazawa J.T. has designed so anyone—even beginners—can reproduce the same therapeutic results just by following his steps. At his clinic, a single session costs 50,000 yen (approximately $350), but you can now learn this technique at a fraction of the price.

So what makes this method so powerful? The answer lies in a part of the body most people overlook: the iliopsoas muscle. This deep hip muscle attaches directly to the spine and is often the hidden cause of low back pain. When it tightens—due to prolonged sitting, stress, or poor posture—it silently pulls on the lower back, increasing pressure on the spine, compressing nerves, and triggering pain with common activities like walking, sleeping, or standing. Yet most standard treatments focus on the back itself, ignoring the real culprit.

Surprisingly, even experienced therapists miss this connection. The iliopsoas is located deep inside the abdomen, making it hard to access without specialized knowledge. It rarely appears on X-rays or MRIs, and most massage or stretching techniques simply don’t reach it. Kumazawa J.T., however, discovered that by treating this muscle directly with a gentle and precise approach, he could solve cases that had baffled conventional medicine.

In this course, you will learn how to identify iliopsoas-related back pain through simple posture and movement tests. You’ll understand why lying flat on your back can make the pain worse, and why curling up on your side often brings relief. Most importantly, you will be taught the exact hands-on technique that Kumazawa uses in his clinic—one that is easy to imitate, safe to perform, and incredibly effective.

This isn’t magic—it’s method. This course condenses a technique that has helped thousands avoid surgery, stop relying on medication, and return to an active life. You don’t need to be a doctor, therapist, or expert. You just need to follow the steps.

At Kumazawa J.T.’s clinic, patients pay 50,000 yen for a single 10-minute treatment. But now, you can learn how to perform the same treatment yourself, at a fraction of the cost, from anywhere in the world. If you’ve tried everything for back pain and nothing has worked, this may be the missing piece you’ve been waiting for.

To dive deeper, the full technique is taught in the our acutual online course—your opportunity to learn what others travel across the globe to experience.

How was our online Judo Therapy trial lecture?

In our online course, you can learn not only Judo therapy but also Japanese traditions and cultures.
The lectures are arranged so that not only those who are already active as medical professionals, but also those without medical experience can enjoy learning Judo therapy.
If you are interested in our online course, please apply for enrollment and take classes.
We look forward to seeing you again!

Kumazawa Judo Therapy Academy