Your Hips Are Ruining the Pop-Up — Whether You Know It or Not

Watch an experienced surfer's pop-up in slow motion and you'll notice something that doesn't look like a push-up. The hips fire first — driving upward, rotating, abducting — while the hands leave the board almost as an afterthought. Now watch a beginner's pop-up. The hips lag. The spine rounds to compensate. The knees cave on landing. The difference isn't strength. It isn't technique, exactly. It's mobility — specifically, whether the hips have the range to do their job before the lumbar spine decides to do it for them.

Research on surf pop-up mechanics from Borgonovo-Santos and colleagues (2021) characterized the pop-up as a roughly 1.2-second movement with distinct push-up and reaching/landing phases, and found that on landing, the front foot absorbs roughly 72% of peak ground-reaction force (a mean of 1.63 times body weight). That data came from a laboratory simulation with 23 male surfers — not in-water conditions — but the force distribution finding is the most specific biomechanical measure we have for what the hips are asked to control. The hip musculature is responsible for managing that asymmetric impact and keeping the energy from traveling into the lumbar spine and knees. When hip mobility is restricted, it doesn't — and the spine and knees pay the interest on every pop-up.

If you sit at a desk for most of the day and surf on weekends, you are arriving at the water with a pre-loaded deficit. The same adaptive shortening that your chair builds into your hip flexors over eight hours is the exact restriction that surfing most needs you not to have. This isn't a coincidence — it's anatomy.

The Three Planes Surfing Demands (and Sitting Destroys)

The pop-up is not a simple movement. It requires rapid hip flexion (bringing the feet under the hips), hip external rotation (splaying the knees into a stance-width position), and hip extension (driving vertically without compensating through lumbar hyperextension) — all in under a second. Deficits in any of these three planes force the body to borrow range from wherever it can find it.

Beyond the pop-up, surfing loads the hips continuously across the session. Bottom turns and cutbacks require coordinated hip internal rotation of the trail hip and external rotation of the lead hip simultaneously. If that rotation isn't available, the lumbar spine provides it instead, loading the facet joints and discs with every turn. Tube riding and compressed stances demand deep hip flexion with knee-out abduction while keeping the torso vertical — a combination that tight hip flexors make structurally impossible, producing either lumbar rounding or a dramatically reduced squat depth. Aerials and hard landings require rapid eccentric loading through the glutes and hip rotators; without that capacity, the knees absorb what the hips should handle.

The through-line: restricted hips don't stay restricted. They redistribute load. And they redistribute it to joints that weren't designed to take it.

Why Sitting Is the Worst Pre-Surf Warmup

The mechanism of sitting-induced hip restriction is straightforward. Sustained hip flexion at roughly 90 degrees — the position your chair creates — places the iliopsoas (psoas major and iliacus combined) and the rectus femoris in a shortened position. Hold that position for hours, and the muscle-tendon unit undergoes adaptive shortening: the resting length decreases, and available hip extension range decreases with it.

The downstream effects compound. Reduced hip extension ROM promotes anterior pelvic tilt and increased lumbar lordosis under load — the classic desk worker posture that looks like a gentle forward lean through the hips. The tensor fasciae latae and gluteus medius become inhibited, reducing lateral hip stability and allowing compensatory knee valgus under load. Glute inhibition from sustained seated compression reduces power output from hip extension — the primary driver of vertical force in the pop-up.

Here is the nuance Sorely's brief flags clearly: tight hip flexors in desk workers tend to be simultaneously tight and weak. This is not the functional tightness of an athlete whose hip flexors are strong and stiff from overuse. This is the tightness of a muscle that has been parked in a shortened position and has adapted to do nothing from there. Stretching alone won't fix it. The hip flexors need to be lengthened and loaded through range. The glutes need to be activated out of their inhibited state. Both, together, on a schedule.

There's a related problem that gets less attention: the glutes don't just weaken from sitting — they switch off. Sustained compression of the gluteal tissue in a chair, combined with the hip flexors being in a shortened position, suppresses neural drive to the glute max. The muscles are present, structurally intact, and capable of contraction — they're just not firing when asked. Clinicians sometimes call this gluteal amnesia, and for surfers it matters because a glute that doesn't activate on demand can't generate hip extension force during the pop-up or absorb impact on landing. The hip flexor is the problem you feel (it's tight, it pulls); the glute is the problem you don't feel until you're underwater wondering what went wrong.

A 2025 cross-sectional study found that individuals with low back pain showed reduced hip flexor ROM on average compared to controls — though BMI, not hip flexor tightness alone, was the strongest independent predictor after full adjustment. The honest framing: hip mobility restriction correlates with compensatory movement patterns that increase lumbar load, and that matters for surfing performance and long-term spinal health. The direct causal chain to low back pain is mechanistically plausible but not definitively established. You don't need a confirmed mechanism to know that tight hips are producing bad movement — you can see it on the wave.

What the Evidence Actually Says About Hip Mobility Interventions

The research on hip ROM intervention is unusually convergent. A 2023 systematic review (Bryant et al.) found that all 16 included studies examining ROM outcomes reported increases — a rare consensus in exercise science. Static stretching works. It just needs to be sequenced correctly: not before the session (where it blunts power output), but after or on dedicated off days.

The more interesting finding comes from a 2021 meta-analysis (Afonso et al.) comparing resistance training and stretching as ROM interventions. There was no statistically significant difference between the two. Strength training through full range of motion improves hip mobility comparably to dedicated stretching — which has a practical implication for surfers who are already pressed for time. The single-leg Romanian deadlift performed to full hip hinge depth is both a gluteal strength exercise and a hip mobility exercise. You don't have to choose.

Pallarés and colleagues (2021) confirmed this in a systematic review: full-range resistance training produced significantly greater improvements in both muscle strength and lower-limb hypertrophy compared to partial-range training. Training through end range develops end range. The implication for exercise selection is clear.

A 2023 study on gluteal muscle forces during common hip exercises (Collings et al., Medicine & Science in Sports & Exercise) used EMG-informed neuromusculoskeletal modeling to rank exercises by actual muscle force generated — not just EMG activation. The findings are worth knowing. For the gluteus maximus, loaded split squats, single-leg RDLs, and single-leg hip thrusts all generated top-tier force estimates. For the gluteus medius — the hip stabilizer most responsible for preventing knee valgus on landing — the side plank and single-leg squat led. The loaded single-leg Romanian deadlift was the only exercise in the top tier for gluteus maximus, gluteus medius, and gluteus minimus simultaneously. Worth noting: the study used trained female footballers (n=14), and force magnitudes may not translate directly to older or less-trained populations. The exercise hierarchy is more useful than the specific numbers.

Research suggests that a consistent 6-week protocol is sufficient to produce clinically meaningful hip mobility changes. A 2012 RCT by Moreside and McGill (n=24) found both stretching and motor control interventions significantly improved hip ROM, with rotation improving up to 56% over six weeks in the stretching groups. That study used young men with restricted hip mobility; effect sizes for older or mixed-sex populations may be smaller, though the direction of effect is consistent across the broader literature.

The Protocol: Pre-Surf, Post-Surf, and Off-Day

The sequencing matters as much as the exercises. Static stretching before surfing can reduce power output — this effect is well-replicated, though it's strongest for holds longer than 60 seconds per muscle and largely diminishes within 5–10 minutes of subsequent activity. In practice, if you stretch briefly on the beach and then paddle out for 10 minutes, the real-world performance cost is likely minimal. The stronger reason to prioritize dynamic work pre-surf is that it actively primes the neuromuscular patterns you're about to use, not just that it avoids a downside. A 2024 systematic review on dynamic warm-up interventions consistently found improvement in sport-specific performance metrics including change-of-direction speed. Do dynamic work before you paddle out. Do static and loaded work after.

Pre-Surf Activation (8–10 minutes)

This sequence primes hip range without reducing power. Perform it on the beach before paddling out. One thing worth noting: paddling itself is a substantial warmup for the shoulders and core, but it does almost nothing for the hips. The hip flexors, rotators, and glutes stay largely passive during the paddle-out — which is exactly why a hip-specific sequence on the beach isn't redundant. By the time you reach the lineup, your upper body is warm; your hips are still where you left them at your desk.

Hip 90/90 Transitions

Setup: Sit on the floor with both knees bent at approximately 90 degrees — one leg rotated externally in front of you, one rotated internally behind you. Sit tall with hands lightly on the floor beside you for support.

The movement:

1. Without using your hands to push, drive both knees toward the floor, squeezing the front glute and pressing the rear knee down.
2. Hold for 2–3 seconds.
3. Sweep both legs to the opposite side by lifting and rotating through the hips.
4. Pause and reset on the other side.

What right feels like: You should feel a deep stretch in the external rotators of the front hip and a mild to moderate stretch through the front of the rear hip. Your lower back should stay tall and neutral — if it rounds as you transition, you've lost control of the pelvis. The rotation should feel like it's coming from the hip joint, not the lumbar spine.

Common mistakes:

• If you're using your hands to push your knees down: You're bypassing the hip muscles. Use the hands only for light balance, not to force range.
• If your lower back is rounding aggressively: You're past your active range — reduce the excursion and stay in control.
• If the transition feels jerky or effortful: Slow down. The sweep should be controlled and fluid, not a fall to the other side.

Duration: 10 reps per side (10 full transitions each direction).

Lateral Lunge with Hip Circle

Setup: Stand with feet hip-width apart, hands at your sides or lightly on your hips.

The movement:

1. Step wide to the right, shifting your weight over your right foot and sitting into a lateral lunge — right knee bent, left leg straight, hips driving back and down.
2. At the bottom of the lunge, trace a small circle with your hips — forward, out, back, in — as if stirring a bowl with your pelvis.
3. Drive through the right heel to return to standing.
4. Repeat on the left.

What right feels like: You should feel a strong stretch through the inner thigh of the straight leg and a deep hip sink into the bent-knee side. The hip circle should feel like you're finding different parts of the end range — some sticky, some more open. That's the point.

Common mistakes:

• If your bent knee is caving inward: Push it out over the pinky-toe side of your foot. This is a glute activation failure, not a flexibility issue.
• If the hip circle feels like it's happening in the lower back: Root down through the feet and drive the movement from the hip socket, not the lumbar spine.

Duration: 8 reps per side.

Active Leg Swings (Forward-Back, then Side-to-Side)

Setup: Stand beside a wall or hold a fence post with one hand for balance. Weight on one foot.

The movement (forward-back):

1. Swing the free leg forward to roughly hip height — relaxed, not forced.
2. Let it swing back behind you, again to your comfortable end range.
3. The movement should be pendular — using momentum, not muscular grip.

What right feels like: Loose and progressive. By rep 6–8, you should feel the range gently increasing as the hip warms up. No sharp pinching in the front of the hip on the forward swing.

Side-to-side variation: Face the wall. Swing the leg across your body and out to the side. Same pendular approach.

Duration: 12 swings per direction, per leg.

Post-Surf Mobility (10–15 minutes)

Perform after surfing — or on any day, as a standalone session. This is where the static and loaded work lives.

Half-Kneeling Hip Flexor Stretch

Setup: Kneel on your right knee, left foot forward in a lunge position. Both knees at approximately 90 degrees. Hands on your left thigh for stability.

The movement:

1. Squeeze your right glute and tuck your pelvis under — think of drawing your tailbone toward the floor. This is the critical cue: the pelvic tuck is what isolates the iliopsoas. Without it, the lumbar spine extends and the stretch is lost.
2. Shift your body weight forward until you feel a pull at the front of the right hip — not the lower back.
3. Hold for 30–45 seconds, breathing steadily.
4. For an active variation: after 20 seconds of hold, slowly release and re-engage the glute squeeze 5 times without losing the stretch position.

What right feels like: A deep, dull stretch at the front of the hip of the kneeling leg — not the lower back, not the groin, and not a sharp pinch. The stretch should be strong enough to feel it clearly, but steady enough that you can breathe easily through it. If you're holding your breath, you've gone too far.

Common mistakes:

• If you feel it in your lower back, not your hip: Your pelvis has tilted forward. Reset the glute squeeze and re-tuck before shifting forward.
• If you feel sharp pinching at the front of the hip crease: Back off 20% and check for anterior hip impingement — if this pattern persists, see the SeekCare note above.
• If the stretch disappears after 10 seconds: You've lost the pelvic position. Don't chase it by leaning further forward. Reset and hold the tuck.

Progression: Add an overhead arm reach on the same side as the kneeling knee (reach right arm up if right knee is down). This adds a lateral trunk elongation that stretches the hip flexor through a longer fascial line.

Duration: 3 sets of 45 seconds per side.

90/90 Hip Stretch (Static Hold)

Setup: Sit on the floor. Right leg rotated externally in front (shin roughly parallel to the front of your mat), left leg rotated internally behind (shin roughly parallel to your right side). Sit upright — don't slump.

The movement:

1. Without using your hands, sit tall and gently press both knees toward the floor.
2. If the front knee is significantly elevated, place a folded towel under the front thigh for support — don't force the position.
3. Hinge forward over the front shin, keeping your spine long, until you feel a stretch in the external rotators of the front hip (deep in the back of the hip and glute).
4. Hold.

What right feels like: A broad, diffuse pull through the external rotators of the front hip — deeper than the glute surface, in toward the joint. The rear hip should feel a mild stretch in the hip flexors and adductors, and a sense of active effort as you press the rear knee toward the floor — that pressing sensation is the internal rotators of the rear hip working. Your spine should feel long, not rounded.

For surfers specifically: The rear leg position in this stretch mirrors exactly what your trail hip needs to do in a functional surf stance. When the rear knee tucks inboard (hip internally rotated) while the lead hip is externally rotated, you're on the rail. When the rear hip can't find that internal rotation, the board goes flat and you lose the edge. The 90/90 position isn't just a stretch — it's the hip configuration that makes rail surfing possible. Feeling tightness in that rear-hip internal rotation is information.

Common mistakes:

• If you collapse your torso forward to "get lower": You've traded hip position for lumbar flexion. Keep the spine tall and hinge only as far as hip mobility allows.
• If the front knee lifts significantly: The external rotators are too restricted to hold the position. Support the thigh with a folded towel and work the position from there.
• If you feel this in the knee, not the hip: Stop. Knee pain in this position can indicate ligament stress. Reduce the range and ensure the knee is tracking over the ankle.

Duration: 3 sets of 60 seconds per side.

Single-Leg Romanian Deadlift

This is the workout, not just the stretch. The single-leg RDL develops the gluteus maximus, gluteus medius, and gluteus minimus simultaneously through full hip extension range — combining the mobility and strength demands in a single movement.

Setup: Stand on your right foot, left foot lightly hovering behind you. Hold a dumbbell in your left hand (or use bodyweight to start). Slight bend in the right knee — not a locked-out straight leg.

The movement:

1. Hinge forward at the hip, keeping your spine long and chest up. Think: "push the floor away" rather than "lean forward."
2. Let the left leg extend behind you as a counterbalance as the torso lowers.
3. Lower until you feel a strong stretch in the right hamstring and a sense of hip "loading" — typically when the torso is roughly parallel to the floor.
4. Drive through the right heel to return to standing. Squeeze the right glute at the top.

What right feels like: A strong hamstring stretch on the way down and a clear glute contraction on the way up. The hip should feel like it's hinging — opening and closing — rather than the spine bending. Your balance will wobble, especially early. That's the hip stabilizers working, which is the point.

Common mistakes:

• If your back is rounding: You've gone past your hip mobility end range. Reduce depth until you can maintain a neutral spine. Range will come with practice.
• If your standing knee is caving inward: Focus on pressing the knee outward slightly and driving through the heel. This is a glute med failure — lighten the load if needed.
• If you feel nothing in the glute at the top: Add a 2-second pause and conscious squeeze before lowering. If that doesn't help, your hip is not fully extending — make sure you're standing tall at the top, not with a slight forward lean.
• If your hips rotate open (left hip drops lower than right): Keep both hip bones level as if you have headlights on your hip bones pointing forward.

Progression: Add a dumbbell in the opposite hand (right hand for right-leg work) to increase rotational demand. Then progress to both hands loaded.

Duration: 3 sets of 8–10 reps per side. 2–3 times per week.

Deep Squat Hold

Less a stretch than a position audit. The ability to hold a deep squat — hips below parallel, spine upright, heels on the floor — requires adequate hip flexion, external rotation, ankle dorsiflexion, and thoracic extension simultaneously. It's a proxy for whether your hips can generate a clean pop-up landing position. If you can't hold this position on land with your heels down and your chest up, you will almost certainly land on your toes in the water. That forward weight shift over-loads the nose and is one of the most common mechanical causes of pearling on a clean wave — not bad timing, not the wrong board, just hips that couldn't get under you in time.

Setup: Stand with feet slightly wider than hip-width, toes turned out 20–30 degrees.

The movement:

1. Hold a doorframe, TRX strap, or post in front of you.
2. Lower into a deep squat, using the support to keep your chest upright.
3. Work toward bringing heels to the floor and knees tracking over the toes.
4. Hold the bottom position. Explore by shifting weight side to side, gently rotating at the hips.

What right feels like: A broad stretch through the inner thigh and external rotators. The spine should feel elongated, not compressed. If you feel pinching deep in the front of the hip joint (not the groin, but inside the joint itself), stop — this may be impingement rather than tightness.

Duration: Hold for 60–90 seconds. Use the support as much as you need. Progress toward reducing the support over weeks.

Regression: If your heels lift off the floor even with support, place a folded towel or a thin book (1–2 cm) under your heels before lowering. This reduces the ankle dorsiflexion demand and lets you work the hip position without fighting your ankles at the same time. Many people in their 50s and 60s find this necessary at the start — it's a starting point, not a failure.

The Bigger Picture: Hips Are a Longevity Issue

Hip mobility is not a young person's concern. Connective tissue stiffens with age. Synovial fluid viscosity changes. Cumulative postural adaptation — especially in desk workers — compounds decade by decade. For Sorely's 40s and 60s audience, the realistic goal is not gymnastic flexibility. It is preserving and restoring the functional range that surfing needs.

A 2023 meta-analysis confirmed that loaded resistance training significantly improves ROM, with untrained and sedentary individuals showing the largest gains (effect size ~1.04) compared to trained athletes (effect size ~0.43). If you've been sedentary or desk-bound, you have the most to gain — and gain it relatively quickly. Six weeks of consistent work is enough to see clinically meaningful change.

The surfers who keep surfing into their 60s and 70s — and they exist, they're not anomalies — are not genetically blessed. They are consistently maintaining the physical prerequisites that surfing demands. Hip mobility is near the top of that list.

What We Don't Know Yet

No randomized controlled trial has tested a hip mobility protocol specifically in surfers and measured pop-up performance, injury rate, or maneuver quality as outcomes. All of the evidence above is inferred from general athletic populations, biomechanics research, and surf conditioning expert consensus. The mechanisms are sound; the direct surfing-specific evidence simply doesn't exist yet.

The optimal dose — how many days per week, how long per session, for how long — is also unestablished for recreationally surfing adults specifically. Most studied protocols run 6–12 weeks at 3–5 sessions per week. The protocol above is consistent with that range; it is not derived from a surfer-specific trial.

Your hips are not a warmup concern. They are the joint that determines whether the rest of your body surfs well or compensates badly. The pop-up, the bottom turn, the cutback — they're all hip movements first. Build the range. Build the strength through that range. Show up to the water ready to use it.

Start Pre-Surf Activation

Start Post-Surf Mobility

References

1. Borgonovo-Santos, M., Telles, T., Nessler, J., de Castro, M. P., Fernandes, R. J., & Vilas-Boas, J. P. (2021). Are the kinetics and kinematics of the surf pop-up related to the anthropometric characteristics of the surfer? Sensors (Basel), 21(5), 1783. https://doi.org/10.3390/s21051783

2. Collings, T. J., Bourne, M. N., Barrett, R. S., Meinders, E., Gonçalves, B. A. M., Shield, A. J., & Diamond, L. E. (2023). Gluteal muscle forces during hip-focused injury prevention and rehabilitation exercises. Medicine & Science in Sports & Exercise, 55(4), 650–660. https://doi.org/10.1249/MSS.0000000000003091

3. Afonso, J., Ramirez-Campillo, R., Moscão, J., Rocha, T., Zacca, R., Martins, A., Milheiro, A. A., Ferreira, J., Sarmento, H., & Clemente, F. M. (2021). Strength training versus stretching for improving range of motion: A systematic review and meta-analysis. Healthcare (Basel), 9(4), 427. https://doi.org/10.3390/healthcare9040427

4. Pallarés, J. G., Hernández-Belmonte, A., Martínez-Cava, A., Vetrovsky, T., Steffl, M., & Courel-Ibáñez, J. (2021). Effects of range of motion on resistance training adaptations: A systematic review and meta-analysis. Scandinavian Journal of Medicine & Science in Sports, 31(10), 1866–1881. https://doi.org/10.1111/sms.14006

5. Bryant, J., Cooper, D. J., Peters, D. M., & Cook, M. D. (2023). The effects of static stretching intensity on range of motion and strength: A systematic review. Journal of Functional Morphology and Kinesiology, 8(2), 37. https://doi.org/10.3390/jfmk8020037

6. [Full citation pending — DOI confirmation required] Cross-sectional study, hip flexor ROM and low back pain, n=118 adults (aged 20–61). Protocol E.PT.0123.033.V3. ScienceDirect, 2025.

7. [Full citation pending] Mobility training methods in sporting populations: A systematic review of performance adaptations. Journal of Sports Sciences, 2024.

8. Moreside, J. M., & McGill, S. M. (2012). Hip joint range of motion improvements using three different interventions. Journal of Strength and Conditioning Research, 26(5), 1265–1273. https://doi.org/10.1519/JSC.0b013e31824f2351

9. Alizadeh, S., Daneshjoo, A., Zahiri, A., Hadjizadeh Anvar, S., Goudini, R., Hicks, J. P., Konrad, A., & Behm, D. G. (2023). Resistance training induces improvements in range of motion: A systematic review and meta-analysis. Sports Medicine, 53, 131–147. https://doi.org/10.1007/s40279-022-01804-x