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Owned by Kyle

Ruth Performance Lab

133 members • Free

Ruth Performance Lab: Training principles and systems for athletes and coaches to think clearly, perform better, and develop long-term mastery.

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Stimulus Matters

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53 contributions to Ruth Performance Lab
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
@Noah Sager grateful to have you here! Don't hesitate to post / interact / ask questions !
0 likes • 2h
@Jesus Vidal of course - hope you find some value here!
Carbohydrate Ingestion on Exercise Metabolism and Physical Performance
https://academic.oup.com/edrv/advance-article/doi/10.1210/endrev/bnaf038/8432248?searchresult=1 Big paper from some big names challenging that more carbs is always the ideal strategy. Points out that exercise-induced hypoglycemia correlates strongly with exercise fatigue, much higher than glycogen stores. Also, good podcast discussing the paper in-depth below: https://open.spotify.com/episode/3PR2jkrj0NOnQzlYOJ5LSQ
0 likes • 3d
Appreciate the share @Matt Link digging into this now.
3 likes • 3d
Dug through this whole article -- it was a lot! What's cool is that they've basically established a new paradigm around fatigue during steady-state endurance events...shifting the focus from glycogen depletion to maintenance of blood glucose. I think their evidence is really strong to support this idea. The recommendation of ~30g/hr of carbs during steady-state endurance to support performance seems reasonable for this context. The one caution I would share is that the vast majority of their review focuses on long steady-state endurance and at best has very limited applicability to CF and other adjacent sports. My issue is that CF is metabolically different, relying heavily on anaerobic reserves, local glycolytic capacity, and requires multiple events across 2-4 days (up to 14 events at the Games). From my perspective, we're not just trying to maintain steady blood glucose levels -- instead we have to consider subsequent event performance as well. I think carbohydrate intakes in the 60-100g/hr range may be more appropriate for the high repeated metabolic outputs we see in the sport. Also the whole section on fat-adapting is just blanket not-applicable to the CF athlete due to the intensity demands of the sport. Regardless - super cool article and I learned A TON about recent advances in carbohydrate metabolism. Really appreciate the share!!!
Jan 30 Office Hours: POSTED
ALSO - reminder for all 1-on-1 clients, my mental performance coach @Julia Zoukhri will be joining us for Office Hours this Thursday @ 11am EST to talk all things performance. I STRONGLY recommend you make time for this one! ------------------------------------------- This Office Hours touched on competition-week readiness, then zoomed out to recovery, hydration, and performance fundamentals that directly affect training quality and execution. We also covered heat and humidity effects, movement efficiency, and practical gear decisions that matter more as competition level rises. Topics covered: - Competition-week readiness and travel logistics - Fish oil timing, inflammation, and training adaptation - Recovery priorities vs supplements - Hydration targets, electrolytes, and caffeine context - Heat and humidity performance impacts - Rep speed vs set size vs rest cost in movement training - Lifters vs trainers and hidden heel lifts Big take away from the call: Most athletes underperform not because they’re “under-fueled,” but because they’re chronically under-hydrated early in the day. Front-loading fluids (≈20–25% of daily intake within the first 1–2 hours after waking) with added sodium sets up better warm-ups, higher-quality sessions, and less need to play catch-up later, especially for heavy sweaters. Link for all my 1-on-1 clients: https://www.skool.com/ruth-performance-lab-1681/classroom/e28b5e16?md=cfaedfeba4354ebbb1bf3eb7a30cee19
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Anyone using the WurQ Workout Tracking System?
Is anyone playing around with the new WurQ tracking stuff? I've been using it for 3 weeks and I think this COULD be a game changer for competitors training in the sport. I've been doing this for 15 years at this point have have learned from every session I've done so far about my rep speed, where I rest, which movements are actually driving HR metrics... this is really really cool. Also working on a database of movement speeds across every movement I've done so far -- at some point we'll be able to do athlete profiling to take assessments a step further than just knowing splits to knowing actual movement speeds, which movements we need to develop speed vs endurance, etc. If you're using this, let me know and I'd love to know what you're learning from it.
1 like • 8d
No strength tracking features at all. Just movement speed for CF. I see a TON of application for high-level CF athletes where seconds matter... but maybe a little less for performance-oriented training where we're chasing load on bars and max-rep gymnastics sets.
3 likes • 7d
@Luigi Giacomuzzi it has already change how I think about movements in the sport in a fundamental way. Rather than looking at movements by pattern: For example upper body pulling captures everything from Kipping pull-ups to legless rope climbs and pegboard climbs vs squatting which encompasses everything from wallball to heavy front squats. This makes sense from a program design and layout perspective but categorizing a Kipping pull-up and legless rope climbs in the same bucket has limited utility when it comes to metcon construction with intention. The shift I made was looking at movements on a spectrum of movement speed / set-size / rest cost There are some movements where movement speed is the biggest separator and set size is kind of irrelevant: -burpees -ergs (movement speed = pace) -box jump overs Then there movements where your ability to hit big sets is the separator, more than movement speed: -GHD sit ups -TTB -HSPU Then there are movements where you’re forced into small sets and the primary separator is rest time between sets or singles: -legless rc -heavy WL singles -RMU in dense / chipper formats So you need to consider HOW you train and program each movement beyond its “pattern” based on where it falls on this spectrum. More to come on this as I develop the idea.
Conditioning Benchmarks
Hello everyone!| Was curious to know your opinion on conditioning benchmarks for CrossFit athletes. I've had a hard time finding reliable and relevant benchmarks, other than the classic 2k row, 10:00 max cal Echo bike, 5k run, 1 mile run, maybe the occasional Fran, etc. (which I don't know if it's relevant anylonger, for instance). Does anyone have a good set of conditioning benchmarks (mixed-modal included) that they like to use for atheltes' assessment and have decent data to compare to? (I'm thinking Open workouts)
0 likes • 9d
@Francesco Chemello Sent!
0 likes • 8d
@Tom Parrish shoot me a DM on here
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Kyle Ruth
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@kyle-ruth-6490
CrossFit Games athlete and coach helping athletes and coaches think clearly, train smarter, and master the principles that drive real performance.

Active 2h ago
Joined Nov 19, 2025
Canton, GA
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