Eric Cressey says rotational power is a sequencing skill, not a strength number. Here's how to coach the separation.
Two athletes with the same squat can hit very different throwing and swinging speeds - and Eric Cressey traces the gap to hip-to-shoulder separation: the timed lag between the hips and torso that stores and releases elastic energy. This breakdown covers his case in our own words, adds our take for programming rotational athletes, and turns it into a coaching checklist for building power you can actually see transfer to a client's sport.
By Markus Evers · September 2026 · a Coachway video breakdown
the short version
Cressey's point is that power in rotational sports comes from hip-to-shoulder separation - the hips starting to rotate while the torso lags, storing elastic energy that releases as the upper body catches up - so it's a sequencing skill, not just a product of raw strength. The one thing a coach should do about it: for a rotational athlete, train the separation and its timing directly - teach the dissociation, then express it with loaded and ballistic rotational work like medicine-ball throws - rather than assuming a bigger squat will show up as a faster swing on its own.
Eric Cressey - Hip Shoulder Separation is the Key to Unlocking Power
Source: Eric Cressey on YouTube - "Hip Shoulder Separation is the Key to Unlocking Power". Watch on YouTube. We embed the public video and summarise it in our own words; the video, title and channel belong to Eric Cressey, and nothing here implies his endorsement of Coachway.
Who is Eric Cressey, and why coaches watch
Eric Cressey is a strength and conditioning coach and the president of Cressey Sports Performance, best known for developing baseball players - including a long list of professional pitchers - which makes him one of the most recognised names in sport-specific training. His content is grounded in the reality of preparing athletes for a rotational sport, so it leans into the things general fitness content skips: sequencing, power expression, and training the body to produce force in the patterns the sport actually uses. For a coach who works with any athlete who rotates to throw, swing or change direction, he's a rare source of genuinely sport-specific thinking - which is the lens this page is written for.
What Cressey actually argues (our summary)
This is our summary of the ideas in the video, in our own words - not a transcript. Watch the original for his exact demonstrations and examples.
- 1
Power comes from separation. In a rotational movement the hips lead and the torso lags for a moment - that separation stretches the trunk and stores elastic energy that releases into the swing or throw.
- 2
It's sequencing, not just strength. Rotating the hips, torso and arm in the right order and timing is what creates speed - two equally strong athletes can differ hugely in power because of how they sequence.
- 3
Dissociation is trainable. The ability to move the hips independently of the shoulders can be coached and drilled - it's a movement skill, so a client can get better at producing separation.
- 4
Express it at speed. Once the pattern is there, ballistic work - medicine-ball throws and loaded rotational movements - lets the athlete produce the separation fast, which is where the carryover to the sport lives.
- 5
Strength stays the base. None of this replaces general strength - it sits on top of it. You build the force capacity, then train the sequencing and speed that turn it into rotational power.
Coachway's take
We think this is a valuable corrective to how most general programs handle the trunk. Almost all mainstream core training is anti-rotation - planks, Pallof presses, carries - which is genuinely useful for spinal stability. But if a client's goal involves rotating fast to throw, swing or strike, a program that only ever teaches the trunk to resist rotation never teaches it to produce and time rotation, which is the actual athletic quality. Cressey's separation framing puts that missing half back on the table.
Where we'd add nuance for a coaching business: scope and specificity. This is athlete work, and its value scales with how rotational the client's goal actually is - a competitive baseball, tennis or combat athlete needs it; a general-fitness client mostly needs the strength base and some rotational power for balance, not a pitcher's program. Be honest about which client is in front of you, and don't sell sport-specific power work to someone whose sport is "feeling good and staying strong."
The other reality is that this is a movement skill, so online it depends entirely on seeing it. Sequencing and separation are hard to self-assess - a client will swear they're loading the hips when the video shows them rotating as a block - so this only works with regular form checks and a proper assessment of the athlete up front. It pairs naturally with running a real needs analysis so the power work is aimed at the athlete's actual sport and limiter.
So our version of this is: keep building general strength as the base, and for genuinely rotational athletes add a focused layer that teaches hip-shoulder dissociation, then expresses it at speed with ballistic rotational work - all coached from video, because you can't fix a sequence you can't see.
Program the power layer, and actually see the sequence
Rotational power is a skill layered on strength, so you need to program both and check the movement remotely. Coachway's workout builder lets you build the athlete's week as a strength base plus a placed, fresh power block - dissociation drills, loaded rotation, then medicine-ball throws - each with its own demo, and progress the ballistic work as the pattern improves. Pair it with video check-ins so the athlete films the throw or swing and you can see whether they're genuinely separating the hips from the torso or rotating as a block - the thing a client can't judge for themselves.
It works best on a real assessment: our needs-analysis breakdown covers aiming the work at the athlete's actual sport, and programming for hybrid athletes and runners covers fitting a power block alongside everything else.
The rotational-power progression (for a rotational athlete)
A progression you can copy to build rotational power in the right order - pattern before speed, always on a strength base. Fill in the specific drills for your athlete's sport; the sequence and coaching focus are the transferable part. Adapt the specifics to the client and their assessment.
Rotational-power progression
| Stage | Train | Coaching focus |
|---|---|---|
| 0. Base | General strength (legs, hips, trunk) | Build the force you'll later express fast |
| 1. Dissociate | Hips-independent-of-shoulders drills | Teach the separation slowly, no speed yet |
| 2. Load rotation | Controlled loaded rotational patterns | Own the pattern under resistance |
| 3. Express fast | Medicine-ball throws, ballistic rotation | Full intent, quality over reps, stay fresh |
| 4. Make it specific | Patterns that mirror the sport | Check carryover on video, not just in the gym |
How to use it: never skip the base or jump to ballistic work before the pattern is owned. Keep power work fresh and low-volume - intent beats reps - place it early in the session, film it, and grade it on whether the athlete is truly separating hips from torso and whether it transfers to their sport.
ROTATIONAL-POWER PROGRESSION (via Coachway) - build rotational power in order, always on a strength base 0. BASE -> general strength (legs, hips, trunk) | focus: build the force you'll later express fast 1. DISSOCIATE -> hips-independent-of-shoulders drills | focus: teach the separation slowly, no speed yet 2. LOAD ROTATION -> controlled loaded rotational patterns | focus: own the pattern under resistance 3. EXPRESS FAST -> medicine-ball throws, ballistic rotation | focus: full intent, quality over reps, stay fresh 4. MAKE SPECIFIC -> patterns that mirror the sport | focus: check carryover on video, not just in the gym HOW TO USE: Never skip the base or jump to ballistic work before the pattern is owned. Keep power work fresh and low-volume (intent beats reps), place it early in the session, film it, and grade it on whether the athlete truly separates hips from torso and whether it transfers to their sport. Scale to how rotational the client's goal actually is.
Coaching rotational power - FAQ
What is hip-shoulder separation, and why does it matter for power?
Hip-shoulder separation is the brief moment in a rotational movement - a swing, a throw, a pitch - when the hips have started rotating toward the target but the torso and shoulders lag behind. That lag stretches the muscles across the trunk and stores elastic energy, which then releases as the upper body catches up, adding speed the arm alone could never generate. It's why two athletes with similar strength can produce very different power: the one who sequences hips-then-torso-then-arm creates and uses that separation, and the one who rotates everything as a block doesn't. For a coach, it reframes rotational power as a sequencing skill, not just a strength number.
How do I train rotational power for a client?
Train the sequence, not just the muscles. That usually means teaching the dissociation - the ability to move the hips independently of the shoulders - then loading rotational patterns and adding ballistic work like medicine-ball throws where the athlete has to express the separation at speed. Raw core and hip strength support it, but strength without the sequencing timing doesn't transfer to a faster swing or throw. Progress it like any skill: own the movement pattern first, then add speed and load, and keep it specific enough to the athlete's sport that it actually carries over.
Is rotational power only relevant for baseball and golf?
Those are the obvious cases, but rotational power and the ability to separate and sequence show up across sport and life - tennis, throwing, combat sports, change-of-direction in field sports, even swinging a load around at work. Most general strength programs train the trunk almost entirely to resist rotation (anti-rotation core work), which is valuable, but they rarely train the athlete to produce and time rotation. If a client's goal involves rotating fast and transferring force, some of their program should look like this - not just planks and Pallof presses.
Should this replace normal strength work for an athlete?
No - it sits on top of it. General strength is the base that makes power training possible; you can't express force you haven't built. The rotational-power work is the specific, higher-speed layer that turns that strength into a faster swing or throw, and it's usually a smaller part of the week placed when the athlete is fresh, since quality and intent matter more than volume for power. Build and maintain the strength base, then dedicate focused, un-fatigued work to the sequencing and ballistic expression - the two together are what move the needle for a rotational athlete.
More athlete-development breakdowns
- · Jared Feather on the athlete needs analysis - aim the power work at the athlete's real sport and limiter.
- · Nick Bare on the hybrid athlete - fitting a focused block alongside everything else.
- · Lee Taft on coaching speed and agility - teaching change-of-direction as a movement skill.
- · The full library: fitness creator coaching breakdowns.
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Coach a movement skill you can't stand next to
Rotational power is a sequencing skill layered on strength - so you need to program both and see the movement. Coachway pairs a workout builder that structures the strength base plus a fresh power block with video check-ins, so you can tell whether the athlete is truly separating hips from torso before you progress. Start your 14-day free trial and build your first athlete's power block from one screen.
