Fast Talk, ep. 30: Myth Busters: Why we can’t talk about lactic acid

The VeloNews Fast Talk podcast is your source for the best advice and most interesting insight on what it takes to become a better cyclist. Listen in as VeloNews columnist Trevor Connor and editor Caley Fretz discuss a range of topics, including training, physiology, technology, and more.

Ouch, it burns! But what is “it” — the root cause of the pain in your legs when you smash it up a hard climb? For the longest time, we colloquially called “it” lactic acid. It turns out that was wrong.

Coach Trevor Connor and Caley Fretz examine the chemistry that occurs in our muscles while riding and racing. They talk to Dr. Iñigo San Millán, who is the director of Colorado University’s exercise physiology lab. Best of all, they give you practical advice for your own training to help make that burn go away — or at least make you faster even if it hurts.

Fast Talk is available on all your favorite podcast services, including iTunes, Stitcher, Google Play, and Soundcloud. If you enjoy the podcast, please consider taking a moment to rate and comment on iTunes after listening. Also, check out the VeloNews Cycling Podcast, our weekly discussion of the sport’s hottest topics, trends, and controversies.

References:

(Benton, et al., 2008; Bonen, 2001; Cairns, 2006; Gladden, 2001; Green, et al., 2002; Mainwood & Renaud, 1985; Messonnier, et al., 2013; San-Millan & Brooks, 2017; Thomas, Bishop, Moore-Morris, & Mercier, 2007; Thomas, Bishop, Lambert, Mercier, & Brooks, 2012; van Hall, 2010)

Benton, C. R., Yoshida, Y., Lally, J., Han, X. X., Hatta, H., & Bonen, A. (2008). PGC-1alpha increases skeletal muscle lactate uptake by increasing the expression of MCT1 but not MCT2 or MCT4. Physiol Genomics, 35(1), 45-54. doi: 10.1152/physiolgenomics.90217.2008
Bonen, A. (2001). The expression of lactate transporters (MCT1 and MCT4) in heart and muscle. Eur J Appl Physiol, 86(1), 6-11. doi: 10.1007/s004210100516
Cairns, S. P. (2006). Lactic acid and exercise performance : culprit or friend? Sports Med, 36(4), 279-291.
Gladden, L. B. (2001). Lactic acid: New roles in a new millennium. Proc Natl Acad Sci U S A, 98(2), 395-397. doi: 10.1073/pnas.98.2.395
Green, H., Halestrap, A., Mockett, C., O’Toole, D., Grant, S., & Ouyang, J. (2002). Increases in muscle MCT are associated with reductions in muscle lactate after a single exercise session in humans. Am J Physiol Endocrinol Metab, 282(1), E154-160.
Mainwood, G. W., & Renaud, J. M. (1985). The effect of acid-base balance on fatigue of skeletal muscle. Can J Physiol Pharmacol, 63(5), 403-416.
Messonnier, L. A., Emhoff, C. A. W., Fattor, J. A., Horning, M. A., Carlson, T. J., & Brooks, G. A. (2013). Lactate kinetics at the lactate threshold in trained and untrained men. [Article]. Journal of Applied Physiology, 114(11), 1593-1602. doi: 10.1152/japplphysiol.00043.2013
San-Millan, I., & Brooks, G. A. (2017). Reexamining cancer metabolism: lactate production for carcinogenesis could be the purpose and explanation of the Warburg Effect. [Review]. Carcinogenesis, 38(2), 119-133. doi: 10.1093/carcin/bgw127
Thomas, C., Bishop, D., Moore-Morris, T., & Mercier, J. (2007). Effects of high-intensity training on MCT1, MCT4, and NBC expressions in rat skeletal muscles: influence of chronic metabolic alkalosis. Am J Physiol Endocrinol Metab, 293(4), E916-922. doi: 10.1152/ajpendo.00164.2007
Thomas, C., Bishop, D. J., Lambert, K., Mercier, J., & Brooks, G. A. (2012). Effects of acute and chronic exercise on sarcolemmal MCT1 and MCT4 contents in human skeletal muscles: current status. Am J Physiol Regul Integr Comp Physiol, 302(1), R1-14. doi: 10.1152/ajpregu.00250.2011
van Hall, G. (2010). Lactate kinetics in human tissues at rest and during exercise. [Review]. Acta Physiologica, 199(4), 499-508. doi: 10.1111/j.1748-1716.2010.02122.x

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VN podcast, ep. 55: Tour de France? Tour de Ambush!

Welcome to the VeloNews cycling podcast, where we discuss the latest trends, news, and controversies in the world of cycling.

The Tour de France unveils its 2018 route. We’ve got to hand it to ASO for thinking outside the box. This could be the route that breaks Chris Froome and Team Sky. Or, it might be just a gimmicky way to include Roubaix cobblestones. Fred Dreier, Spencer Powlison, and Andrew Hood analyze the key stages, name some favorites and opine on the Tour’s ambush-friendly route.

In our segments, you #AskACat3 and we answer with all of our usual wisdom. Then, we pick our VN Podiums for the all-time best Tour de France villains.

If you like what you hear, subscribe to the VeloNews podcast on iTunes, Stitcher, and Google Play. Also, check out the VeloNews Fast Talk training podcast with Trevor Connor.

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VeloNews Interviews podcast: CX champ Stephen Hyde

Welcome to the VeloNews podcast. If this episode sounds a little different, that’s because it is. We’ve launched a new series that is devoted to interviews with cycling’s most interesting people. From riders to directors to other influential people, this is your place to learn about the sport from the insiders.

Fred Dreier sits down with cyclocross star Stephen Hyde to talk about his unusual path to the top, the weight of his national championship jersey, his relationship with an old mentor, Jeremy Powers, and a battle with depression.

Read more about Hyde >>

If you like what you hear, subscribe to the VeloNews podcast on iTunes, Stitcher, and Google Play. Also, check out the VeloNews Fast Talk training podcast with Trevor Connor and Fretz.

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VN podcast, ep. 54: Why Lombardia is cycling’s hardest race

Welcome to the VeloNews cycling podcast, where we discuss the latest trends, news, and controversies in the world of cycling.

Cannondale-Drapac pro Alex Howes is the celebrity guest on this week’s episode of the VeloNews Podcast, which digs into crashes and descending skills at Lombardia, the emotional toll of Cannondale’s summertime financial woes, and, for the first time ever, answers to your burning #AskACat3 questions.

If you like what you hear, subscribe to the VeloNews podcast on iTunes, Stitcher, and Google Play. Also, check out the VeloNews Fast Talk training podcast with Trevor Connor and Fretz.

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Fast Talk podcast, ep. 29: The future of bikes

The VeloNews Fast Talk podcast is your source for the best advice and most interesting insight on what it takes to become a better cyclist. Listen in as VeloNews columnist Trevor Connor and editor Caley Fretz discuss a range of topics, including training, physiology, technology, and more.

What will bikes look like in five years? What will they ride like? We and joined by VN tech crew Dan Cavallari and Kristen Legan to dig into the future of bikes.

Fast Talk is available on all your favorite podcast services, including iTunes, Stitcher, Google Play, and Soundcloud. If you enjoy the podcast, please consider taking a moment to rate and comment on iTunes after listening. Also, check out the VeloNews Cycling Podcast, our weekly discussion of the sport’s hottest topics, trends, and controversies.

The post Fast Talk podcast, ep. 29: The future of bikes appeared first on VeloNews.com.