Personal collective of ideas, thoughts and notes
Another great experience racing ORAMM (Off-Road Assault on Mount Mitchell). Some of the coolest temps but also pretty slick from all the rain we have had lately. This was my slowest time over the 4 years racing this event, but due to that it was probably the most enjoyable 🙂
3 minutes slower than in 2022 🙂
Another fun 3D print project for my new Canyon Grail. Having a 3rd bottle mount for longer rides is pretty helpful. Design in Fusion 360.
Pretty happy with the way some of these came out. Added a unique spin on my bikes and helmets to match.
They are vinyl stickers cut on a Silhouette.
Tracking cycling endurance training progress over time. As I have shifted my focus from MTB racing to Endurance/long distance triathlon, My sprint power has decreased slightly (5 minutes and 1 minute) but FTP (20 min+) has slowly been ticking upward. Since I have been swimming and running more, it probably has not increased as much as I hoped, but I am learning endurance is not something that gets established overnight ….
Super interesting article on the use of Hypoxanthine (from sweat) being used as a predictor of performance in athletes.
Having done HR tracking, Power and over the last couple of years, Lactate, it’s always interesting to hear of new methods and advancements in performance, and opportunities to improve metabolic health. So while I am still waiting for a reasonable/practical real-time Lactate monitoring solution, maybe I should skip to the next big thing …
Check it out here: https://pubmed.ncbi.nlm.nih.gov/23670363/
Purine metabolism reflects the exercise-induced muscle adaptations and training status. This study evaluated the utility of plasma hypoxanthine in the prediction of actual sport performance. We studied male athletes: 28 triathletes (21.4±2.9 years), 12 long-distance runners (23.2±1.9 years), 13 middle-distance runners (22.9±1.8 years) and 18 sprinters (22.0±2.7 years). Season-best race times were considered, achieved over standard triathlon, 5 000 m, 1 500 m and 100 m, respectively. Incremental treadmill test was administered to determine maximum and “threshold” oxygen uptake. Resting and post-exercise plasma concentrations of hypoxanthine, xanthine, uric acid and lactate were measured as well as resting erythrocyte hypoxanthine-guanine phosphoribosyltransferase activity. Simple and multiple regression analyses were used to identify significant contributors to the variance in performance. Hypoxanthine considered alone explained more variance in triathletes, long-distance runners, middle-distance runners and sprinters (r 2=0.81, 0.81, 0.88 and 0.78, respectively) than models based on aerobic capacity and lactate (R 2=0.51, 0.37, 0.59 and 0.31, respectively). Combining purine metabolites and cardiorespiratory variables resulted in the best prediction (R 2=0.86, 0.93, 0.93 and 0.91; r=0.93, 0.96, 0.96 and 0.95, respectively). In summary, hypoxanthine is a strong predictor of performance in highly trained athletes and its prediction ability is very high regardless of sport specialization, spanning the continuum from speed-power to endurance disciplines.
Another 3D printed bottle holder for my Canyon Speedmax. This is a raised bottle holder for between your arms and mounts a traditional water bottle cage.
The typical distance between for the mount holes on cages are 64mm. 2 100mm M5 bolts keep the mount attached to a custom made carbon fiber base plate.
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