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5 contributions to Ruth Performance Lab
Fix for hip drive in the kipping HSPU
I filmed this video for some clients today to help them with fixing the tuck position of their kipping HSPU. There are a few keys to having powerful hip drive but building strength in this style of tuck will solve a lot of them as it pertains to the kipping HSPU.
0 likes • 23d
Awesome!! 👍
Coaching Conversations EP5 - Best Practices Don't Exist Yet for CrossFit
https://open.spotify.com/episode/6BVLwgkZgwvRZ7o5Rg2AQm?si=2BbH386eRZOECjeHf-8V4w Topics we discussed with some related questions. Would love to hear thoughts here - Yielding isometrics build tendon and muscle. Overcoming isometrics build strength. Same hold time, same intensity, completely different outcome. Are you programming "isometric work" as one bucket, or picking one of these on purpose? - Yielding isometrics have a documented painkilling effect — you can hold a loaded position, feel your knees less on the squats that follow, and not have fixed a single thing. Where's the line between smart pain management and masking a problem you should actually be addressing? - Asked point blank if coaching has arrived at best practices for the CrossFit athlete, the answer was: "No — not even close." Swimming's had 50+ years to refine its methodology and elite swimmers are still finding new PRs. What's the one thing you think CrossFit coaching is still getting badly wrong? - Anything under 5 minutes isn't automatically a "sprint" — a 3-minute AMRAP of legless rope climbs and heavy squat cleans looks nothing like a 3-minute row from an energy-system standpoint, even though both are "short and hard." Is time domain the wrong way we're all classifying workout intensity?
2 likes • 24d
Another good episode, just finish it this morning!
Looking for feedback on a nutrition guide
Hey everyone! I put together a nutrition guide for competitive functional fitness athletes covering hydration, intra-workout fueling, and carb cycling. Before I finalize it I want a few sets of eyes on it. Looking for 2 - 3 people willing to read through it and give honest feedback on: - Content - does anything feel off, missing, or unclear? - Design / readability - is it easy to follow, do the tables and layout make sense? - As an athlete or coach, would you find this useful? It's about a 15-20 min read. Drop a comment if you're down and I'll send it over. Thanks!
1 like • Apr 25
I can help also if you need more people
Anyone up for an experiment?
I have created an algorithm that can predict your "max sustainable pace" for sport-specific movements (like RMU, burpees, box jump overs, light TnG power snatches, etc). I'm really excited about the prospects of this... but I need to gather data. The tests are simple, Day-1 - 1min max rep of the movement Day-3 - 5min max rep of the movement For example Monday - 1min max reps RMU Wednesday - 5min max reps RMU These need to be done in a low-fatigue environment so before metcons / etc within training. All I need are those two data points and I can provide you with some really cool data that you can use inside training and competition. The movement selection doesn't matter as I am (fairly) confident that the formula I've come up with will predict sustainable rep-rates regardless of the movement. If anyone is interested in participating... let me know (1) what you're planning to test, and then (2) just upload your results directly here.
0 likes • Feb 6
I am in. 1) strict HSPU
1 like • Feb 11
@Kyle Ruth job done 1min sHSPU: 24 reps 5min sHSPU: 50 reps
Welcome to The Ruth Performance Lab!
I’ve created this as a community for athletes and coaches in the competitive fitness space to learn and collaborate. I’ll be sharing deep dives of training concepts, program design breakdowns, and inviting subject matter experts in everything from mental performance training and nutrition to niche topics like breathing and BFR. What to expect here: For my individual coaching clients: 1. Weekly Office Hours starting the first week after Thanksgiving 2. A full library of all Office Hours recordings 3. A resource library for everything training and performance related from the Competitors Manual, travel guidelines, pacing breakdowns, to nutrition and supplement guides. For everyone else: 1. Training education, system breakdowns, and long-form posts. 2. A place to ask questions and learn alongside other serious athletes and coaches. Thanks for being here, I’m excited to grow this alongside you!
0 likes • Dec '25
Thank you to accepted me 🔥
1-5 of 5
Kenneth Grosjean
1
1 point to level up
@grosjean-kenneth-4477
CrossFit Remote Coach

Active 1d ago
Joined Dec 18, 2025
Clermont-Ferrand
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