Watts Doc #48: How PGC-1ɑ Does and Doesn't Live Up To The Hype

This episode addresses common questions about winter/off-season training, and goes into how we plan and individualize effective winter training. We answer questions like whether it be all "zone two", when and how to include strength training, if you should do intervals and how hard they can be, sweetspot vs polarized, incorporating fun rides or Zwift and other virtual racing, and more. We share our thoughts on what we actually consider when we're planning training for our coaching and consultation clients like off-bike stress, race schedule, fatigue management, training history and personal physiology, dealing with fitness loss and expectations for regain, plus we answer a bunch of listener questions!

Coaches Kolie, Erica, and Gediminas talk about the most impactful training habits that cyclists can incorporate into their routines, and the ways that these habits can be overdone that end up working against us. We dig into consistency, nutrition quality, health consciousness, coaching relationships, focus, sleep, and more.

Our coaches address the common question of why your friend may be faster when doing less training than you, as well as why your experience level or race category probably doesn't indicate how much you should train. We look at the different returns on investment with training volume vs intensity, selection and survivor bias in cycling, a survey of power and training volume with racing cyclists in the US, and why comparison can be the thief of joy, but when it can be a useful tool for goal setting. We also answer your listener questions on genetics, time in zone progression, training time as a limiter, and more.

This episode is one of our deepest dives ever, into the literature on creatine's effects and tradeoffs with cycling performance, and how the results fare against Kolie's standard for being meaningful, noticeable, or measurable. Because individual studies report such varied results, we instead look at a meta analysis on creatine supplementation in aerobic performance, another on repeated sprints, plus a bonus study with a simulated road race. There's also a brief and explicitly non-expert look at a popular paper on creatine and cognition. Instead of recommending whether cyclists take creatine or not as a binary, we discuss the pros and cons, realistic expectations of effects, and in what cases we would consider supplementation. Plus your listener questions!

This episode we start with the old cycling adage "train your weaknesses, race your strengths" as the jumping off point to discuss strategies for diagnosing and training weaknesses in the off season. We decide for whom this would make sense as a strategy, the opportunity cost of training a weakness, low opportunity cost things to train, how race selection factors in, and much more.

This episode we look into the published literature on the surprisingly tight agreement between FTP and RPE and a couple different lab-derived measures of threshold like MLSS and critical power, along with the concept of anchoring. But first we get philosophical about how measurements often become definitions that can lose sight of our valid observations and experience. We wrap up by discussing FTP testing with RPE, plus answer your listener questions on RPE scales and anchors, RPE drift, common mistakes when using RPE, Borg's 6-20 vs 10 point scale, and much more.

This is a deep dive into four papers on hypertrophy and strength training, and use them to find guidelines around how cyclists can improve strength without gaining weight. We evaluate the stimulus and overall impact of eccentric vs concentric contractions, sets and reps, minimum dose for strength improvements, progressive overload, and nutrition.

We take a deep look at ten commonly used ways to test or estimate FTP, and dissect how and why each method does (or is supposed to) work, how often we might expect accurate result and who it'd be accurate for, and the Empirical Cycling standards for test accuracy. We also dig into some data on ramp test accuracy and bias, plus how anaerobic capacity, RPE, and daily fluctuations in performance can play a role in test results. Plus time in zone, %FTP, normalized power, lactate tests, the "Kolie Moore" test, and your listener questions on DFA-alpha1, eFTP, and more.

Our coaches sit down to discuss the downsides of using FTP as an anchor for many types of intervals, how your individual physiology can make those targets suboptimal for the best stimulus, and the many alternative approaches that we use instead. We dig into VO2max, anaerobic and sprint efforts, plus first threshold and endurance riding. Then we answer your questions on minimum effective dose, breaking out of a rut, assessing realistic targets, and more.

Dr. Eric Trexler joins the podcast for a nuanced discussion on energy expenditure and endurance sports. He explains measurement methods, the constrained energy expenditure model and its interpretations, the difficulty of calculating your total energy expenditure and needs and practical solutions, some curious results from papers on energy expenditure in cycling grand tours, and much more.