Runner's Rationale

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Research commentary for the skeptical runner

Emilie Reas
12 posts

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  • May 11, 2014
  • 04:49 PM

For foot strength, less is more

by Emilie Reas in Runner's Rationale

Check out this season’s running shoe guide and you will undoubtedly be overwhelmed by the options, each model carrying its unique promise for improved comfort and performance. Your traditional shoes guarantee the perfect level of support and motion control, your minimalist shoes provide unprecedented ground feel and flexibility, and – at the opposite end of … Continue reading →... Read more »

  • December 15, 2013
  • 02:20 PM

The high cost of ankle instability

by Emilie Reas in Runner's Rationale

What’s your running goal? Are you looking to run faster, further or injury-free? Every runner has room for growth, and a key to developing that potential is knowing what specific factors, whether metabolic, mechanical or otherwise, might be holding you back from reaching your targets. A strong predictor of running performance is VO2 max, or … Continue reading »... Read more »

Lazzer S, Taboga P, Salvadego D, Rejc E, Simunic B, Narici M, Buglione A, Giovanelli N, Antonutto G, Grassi B.... (2013) Factors affecting energy cost of running during an ultra-endurance race. The Journal of experimental biology. PMID: 24265425  

  • November 20, 2013
  • 12:41 PM

The best foot strike fore the knee

by Emilie Reas in Runner's Rationale

“If you keep running like that, you’ll ruin your knees by the time you’re 40!” If you’re a runner, chances are you’ve heard such cautionary advice one too many times. For the 42% of runners who suffer from knee injuries each year 1, chronic, and potentially debilitating knee pain may be a legitimate concern. For … Continue reading »... Read more »

Kulmala JP, Avela J, Pasanen K, & Parkkari J. (2013) Forefoot strikers exhibit lower running-induced knee loading than rearfoot strikers. Medicine and science in sports and exercise, 23-28. PMID: 23748735  

  • July 25, 2013
  • 01:45 PM

Cool shirt. But can it stand the heat?

by Emilie Reas in Runner's Rationale

Summer’s here! For many, this is reason to rejoice. Summer can mean time off from school or work, beach-going or sipping cocktails by the pool. But for runners, the thought of sun and heat can evoke dread. The rising temperatures instead mean risk of overheating, dehydration, cramping and bonking. A smart runner will take extra … Continue reading »... Read more »

Billy Sperlich,, Dennis-Peter Born,, Marie Denise Lefter,, & Hans-Christer Holmberg. (2013) Exercising in a Hot Environment: Which T-shirt to Wear?. Wilderness . DOI: 10.1016/j.wem.2013.04.005  

  • June 26, 2013
  • 08:54 AM

The cold plunge to recovery

by Emilie Reas in Runner's Rationale

A long, hard run is in the books and now it’s time to reward yourself. A nice, hot shower will hit the spot … or better yet – a long soak in the hot tub. You deserve it! “Not so fast, buddy! You do realize the havoc that heat will wreak on your already inflamed, … Continue reading »... Read more »

  • June 13, 2013
  • 09:18 AM

Running to the heart's discontent

by Emilie Reas in Runner's Rationale

Running to the heart's discontent... Read more »

Burr JF, Drury CT, Phillips AA, Ivey A, Ku J, & Warburton DE. (2013) Long-term ultra-marathon running and arterial compliance. Journal of science and medicine in sport / Sports Medicine Australia. PMID: 23707138  

  • May 26, 2013
  • 09:55 PM

Forefoot, rearfoot or YOUR-foot strike?

by Emilie Reas in Runner's Rationale

At your next 10k or marathon, take a moment to observe the feet of the passing herd and you’ll note one commonality: most runners – nearly 90% 1 - will contact the ground with their heel first. But like your mother said, just because everyone else is doing it doesn’t mean you should too! In fact, … Continue reading »... Read more »

  • April 11, 2013
  • 10:35 AM

When running on empty, caffeine to the rescue!

by Emilie Reas in Runner's Rationale

When running on empty, caffeine to the rescue!... Read more »

Lane, S., Areta, J., Bird, S., Coffey, V., Burke, L., Desbrow, B., Karagounis, L., & Hawley, J. (2013) Caffeine Ingestion and Cycling Power Output in a Low or Normal Muscle Glycogen State. Medicine , 1. DOI: 10.1249/MSS.0b013e31828af183  

  • December 18, 2012
  • 10:01 AM

The long run to inflammation

by Emilie Reas in Runner's Rationale

The long run to inflammation... Read more »

  • October 27, 2012
  • 02:12 PM

Shaky science for shoes and soles

by Emilie Reas in Runner's Rationale

Shaky science for shoes and soles... Read more »

  • September 15, 2012
  • 11:28 AM

Why runner’s knee is sexist

by Emilie Reas in Runner's Rationale

Why runner’s knee is sexist... Read more »

Willson JD, Petrowitz I, Butler RJ, & Kernozek TW. (2012) Male and female gluteal muscle activity and lower extremity kinematics during running. Clinical biomechanics (Bristol, Avon), 27(10), 1052-7. PMID: 22948078  

  • September 12, 2012
  • 08:46 PM

Sports drinks: Performance aid or propaganda?

by Emilie Reas in Runner's Rationale

Sports drinks: Performance aid or propaganda?... Read more »

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