Physiologically Speaking

Brady Holmer

A weekly podcast highlighting recent research in science. www.physiologicallyspeaking.com

  1. 3d ago

    The Ketone Study I've Been Waiting For...

    Greetings! I’m incredibly excited to share this video with you for this week’s edition of the newsletter. I sat down with Dr. Latt Mansor of Ketone-IQ to dive deep into a brand-new study in cyclists showing that taking ketones after exercise enhances beneficial blood vessel responses and increases EPO production during recovery. I’ve provided the study abstract and summary below, but we get into all the details in the video. What excites me so much about this study is that they used Ketone-IQ (rather than ketone esters, which have dominated the research to date). It’s the ketone supplement I’ve been using for my own training, so seeing these effects validated in the research is huge. Full disclosure… I’m part of the science advisory board at Ketone-IQ, and I’m an affiliate for their products, but it’s for a good reason. They have become the brand I trust, and their team is dedicated to advancing the science of ketones. Try some for yourself: Unlock sharper focus and support long-term brain health and exercise recovery with Ketone-IQ — Get 30% off your subscription. Abstract Regular physical activity improves vascular function and promotes angiogenesis and erythropoiesis, which are further augmented by hypoxia. Early evidence suggests that long-term exogenous ketosis (EK) can enhance vascular function and angiogenesis. However, the acute responses and underlying mechanisms remain unknown. Moreover, acute and prolonged EK may increase blood erythropoietin (EPO) concentrations in normoxia. Nonetheless, whether this effect is additive to hypoxia is unclear, as an EK-mediated attenuation of blood deoxygenation may counteract the [EPO] increase. In a randomized, placebo-controlled, crossover design, 13 male and two female participants completed four experimental sessions. Each included a high-intensity interval training session, followed by recovery either in normoxia or normobaric hypoxia (3000 m simulated altitude, : 14.5%), supplemented with placebo or the commercial ketone precursor Ketone-IQ®. Macro- and microvascular function were assessed throughout a vascular occlusion protocol, using femoral artery blood flow and muscle oxygenation, respectively, after 2.5 and 5.5 h recovery. Additionally, serum EPO and endothelin-1 (ET-1) concentrations, and skeletal muscle expression of pro-angiogenic and vascular integrity markers were evaluated. In normoxia and hypoxia, EK increased post-occlusion blood velocity (+15%) and muscle reoxygenation rate (+9%). Furthermore, muscle expression of pro-angiogenic and vascular integrity markers (including vascular endothelial growth factor, peroxisome proliferator-activated receptor γ coactivator 1α, and angiopoietin-1) as well as serum [EPO] (+15%) increased with EK, while serum [ET-1] was reduced (−13%). EK appears as a promising strategy to enhance vascular function and integrity, angiogenic signalling, and circulating [EPO] in response to exercise and hypoxia, thereby facilitating beneficial adaptive responses. This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.physiologicallyspeaking.com/subscribe

    1 hr
  2. My Home Gym / Garage Gym Tour

    Jun 8

    My Home Gym / Garage Gym Tour

    In this video, I’m giving you a full tour of my home gym (or garage gym, or “pain cave,” depending on the day) and reviewing some of the equipment I’ve been using to support my marathon training, cross-training, strength work, and general health. My training is built around consistency. Most days, that means running. But the equipment in this garage lets me add low-impact aerobic work, strength training, uphill treadmill sessions, easy spins, warm-ups, and recovery workouts without needing to leave the house. A few of the main pieces I cover in this video include: * FEIERDUN DB1 adjustable dumbbells * YOSUDA EM1 long-stride magnetic elliptical * Feier TM1 fully folding treadmill * Concept2 RowErg * Zwift Ride Smart Frame paired with a Wahoo KICKR CORE trainer Huge shoutout to Jason Rodriguez for filming this content and creating an incredible video. You can find Jason on Instagram @ctxsmedia. Equipment featured FEIERDUN DB1 Quick Adjustable Dumbbells Find them here: https://www.fedfitness.com/products/quick-adjustable-dumbbell-52-5lbs These have probably been my favorite addition to the gym. As a distance runner, upper-body strength is something I can easily neglect, and having adjustable dumbbells makes it much easier to get in quick, consistent strength work. The DB1 dumbbells go up to 52.5 pounds each and adjust in 2.5-pound increments, which gives me plenty of flexibility for curls, presses, push-ups, accessory work, and short strength sessions throughout the day. The big advantage is convenience: instead of needing a full rack of dumbbells, I can quickly adjust the weight and move from one exercise to the next. YOSUDA EM1 Long-Stride Magnetic Elliptical Find it here: https://www.fedfitness.com/products/long-stride-magnetic-elliptical-machine I’ve never been a huge elliptical person, but this one has become a useful tool for low-impact cardio days. It’s smooth, compact, and easy to use when I want aerobic work without adding more running impact. I’ve been using it about once a week, especially when I want something different from the bike. It has multiple resistance levels, Bluetooth/app connectivity, and a compact footprint, which makes it a good fit for a garage gym or smaller home gym setup. Feier TM1 Fully Folding Treadmill Find it here: https://www.fedfitness.com/products/fully-folding-treadmill The treadmill has become a daily-use tool for me. I use it for uphill strides, controlled intervals, easy runs, shakeout runs, and bad-weather training days. It goes up to 11.2 mph and 12% incline, which gives it a wide enough range for many of the treadmill sessions I like to do. One of my favorite uses is putting on a weighted vest, cranking up the incline, and doing uphill walking when I want a harder low-impact session. I’ve also been impressed by the softness of the ride, the traction of the belt, and the fact that it folds up when not in use. Concept2 RowErg The Concept2 rower is one of my daily warm-up tools. I often use it for 90 seconds to three minutes before a run to get the upper body, lower body, and cardiovascular system moving before I head out the door. It’s simple, durable, and effective, and for me, it’s less about doing long rowing workouts and more about using it as a quick full-body primer before training. Zwift Ride Smart Frame + Wahoo KICKR CORE Get it here: https://us.zwift.com/products/zwift-ride-kickr-core-2 The Zwift setup is probably the biggest overall game-changer for my training as a runner. I use it almost every day, sometimes twice per day, mostly for easy aerobic riding and additional low-impact training volume. Cross-training has become a major part of how I build fitness while staying healthy. The bike lets me add five to ten extra hours of aerobic work per week without the impact of running. Most of my rides are easy spins, but I’ll also use it for intervals about once a week. The electronic shifting, Zwift integration, and TV setup make the experience much more enjoyable. I’m not just staring at a wall—I can ride Zwift, watch something, listen to a podcast, or use it as an easy way to loosen up after a hard run. Why I built a home gym The biggest reason I built this setup is convenience. I’m using something in this gym almost every day. Some days it’s the treadmill. Some days it’s the bike. Some days it’s the dumbbells. Some days it’s just a short row before a run. I think the key pieces for anyone are equipment that supports what you already do: strength training, low-impact aerobic work, controlled treadmill running, and recovery-friendly movement. You don’t need everything at once, but it helps to think about what would let you train consistently even when the weather is bad, life is busy, or you don’t feel like driving to the gym. For me, the essentials are: * A way to strength train * A treadmill for controlled running * A low-impact cross-training option * A space that feels enjoyable enough to actually use every day The next step for this garage gym is making it feel a little more homey, and eventually, I’d love to add a sauna. But for now, this setup gives me almost everything I need for marathon training, strength, longevity, and general fitness. Disclosure: FED Fitness sent me several of the products featured in this video to test and review. This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.physiologicallyspeaking.com/subscribe

    12 min
  3. May 5

    The Benefits (and Science) of Walking with Weight

    I bought a weighted vest after my running injury last year, and I was immediately hooked (here’s the plate carrier I got… no affiliation). Initially, I figured it would be a good rehab tool and a bridge between walking and returning to run. But now, even though I’m back to running full force, I don’t go a day without walking with either the 20- or 30- lb plate on my back. Why not? Much of this was inspired by Michael Easter, author of the amazing Substack Two Percent and too many other awesome books to name. So… I decided to pick his brain on whether “rucking” or walking with weight could have benefits for runners and athletes (the answer is yes, but you’ll need to listen to learn why and how). I really enjoyed this one. You will too. Newsletter partners you should check out… Ketone-IQ is high-performance energy in a bottle. I use it for post-exercise recovery along with enhancing focus, mood, and cognition. Take 30% off your order. Create is the first “modern creatine” brand. They sell a wide range of creatine monohydrate gummies, and just launched a new creatine + electrolyte mix product plus travel-size packets of creatine gummies. They’re giving my audience 20% off their order. ProBio Nutrition—the all-in-one supplement that I use every single day—is offering 20% off. My preference is the tangy orange flavor, but they also sell an unflavored “smoothie booster” that’s great in a shake, smoothie, or juice. * Equip Foods makes some of the cleanest, best-tasting protein products around. I am absolutely obsessed with their Prime grass-fed protein bars (the peanut butter ones are to die for, but they also just released a new chocolate peanut butter flavor). This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.physiologicallyspeaking.com/subscribe

    43 min

Ratings & Reviews

5
out of 5
4 Ratings

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A weekly podcast highlighting recent research in science. www.physiologicallyspeaking.com

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