July 11, 2024

Below is the abridged version of my “Run Long, Run Healthy” newsletter for this week. You can SUBSCRIBE HERE to get the much longer and more complete, full-text edition. Thanks for reading. Amby 

You Won’t Believe This! How To Bounce Back From A Marathon-Training Injury

From 2014 to 2017, Irish marathon runner and big-data expert, Barry Smyth, had access to a massive amount of runner training data from Strava. This data, which included approximately 400,000 marathon runners training for 800,000 marathons, has allowed Smyth to do “real-life” analysis of important marathon training and racing questions. 


Smyth’s most recent paper has gone where no one has been able to go previously. He asks and then answers a question every veteran marathon runner has faced. Here’s the question: “If I lose time to injury in my marathon training buildup, how should I return to training when healthy?”


There are many potential answers to that question. They range from “very conservatively, so you don’t get reinjured” to “very aggressively, so you can go for the gold on race day.”


Ask any coach, exercise scientist, or physical therapist for their answer, and almost 100 percent will select the conservative approach. In running, we just don’t believe in making up for lost time. We believe in patience, slow-steady progress, and staying healthy against future injuries.


Surprise! That’s not what Smyth’s data revealed. And he had a LOT of data--he found 103,000 runners in marathon training who missed 7+ consecutive days of training--presumably from injuries. 


When these runners returned to training, some ran 20 to 25% less than they had been previously. They followed the conventional wisdom. 


However, one-third “effectively doubled their training.” They apparently felt nervous about a rapidly-approaching marathon race, and opted for an all-in approach.


At this point, you’re thinking, “That’s a recipe for disaster.” But it wasn’t. The hard-trainers finished their marathon “slightly faster” than those who followed a conservative approach. They also missed fewer training days (from presumed injury) in the rest of their marathon prep than their more-cautious peers. 


Before I could email Smyth a few hard questions, he responded with answers. “It would be unwise to conclude that it is safer to come back aggressively after an injury, notwithstanding what our data showed,” he wrote. “I think this effect was likely due to runners who were not badly injured, and were able to come back strongly.” 


Still, the paper clearly showed that it’s possible to get over an injury, and jump back into training more aggressively than most have believed. Many running injuries are minor, heal quickly, and allow for continued hard training. Plus, the injury might have given you a good recovery period. Just remember that familiar cardinal rule: Listen to your body. More at Case Based Reasoning Research & Development.


Beware Fake Science In Olympics Marketing

I anticipated much of what I read in Nick Tiller’s essay “From Gods to Gurus” about superstition and science at the Olympic Games. But I also learned more than I expected.


For example, I wasn’t surprised by Tiller’s skepticism over Michael Phelps’s use of cupping therapy, Mo Farah’s belief in cryotherapy, and many athletes’ use of kinesio tape. It turns out that a major k-tape company donated 50,000 rolls to athletes before the 2008 Beijing Olympic Games, and many of those athletes subsequently wore the tape “like performance art” during their televised Olympic appearances. Bingo! A huge, instantaneous marketing success. 


I also expected that many athletes would have “lucky socks” or other lucky apparel that they believe essential to their success. But I didn’t know that one speed skater always touches both eyebrows and winks at the camera to guarantee a good race. Or that a swimmer follows a ritual involving a number sequence of 8-4-4.


Why such bizarre approaches? Because believing does in fact help you perform better. That’s the power of the placebo effect. 


But there are steep downsides. When Phelps starts selling his own cupping device, and anyone else pushes their favorite (but unproven) device or supplement, people can get hurt. They get hurt in the pocketbook, of course, but also physically. One review site has documented nearly 400,000 deaths and $3 billion in economic damages due to “unregulated alternative therapies.”


Tiller tells another tale I hadn’t heard before. He says that something called the “Sagan Effect” discourages the most-knowledgeable scientists from engaging in discussion of controversial approaches. When they do, they are often stigmatized by their academic peers, who apparently think experts should stay ensconced in their ivory towers. 


At the same time, good science writing is drying up along with other forms of solid journalism that previously aimed to inform the public. This double whammy is a great boon to non-experts, who find they can peddle their snake oil in a virtual vacuum--AKA, the Internet. Buyer, beware. More at The Skeptical Inquirer.


99 Year Old Finishes Peachtree 10K In Atlanta

It’s a little early for “Runner of the Year” nominations, but Betty Lindberg has almost clinched my vote. She just finished her 35th Peachtree Road Race 10K in Atlanta at the ripe young age of 99. And Peachtree’s hills and summer heat make it anything but an easy run. Lindberg will turn 100 in September.  Let’s hope she’s got a fall 5K on her race calendar.


These days, Lindberg trains with “quick strolls” around the neighborhood where she lives. Quick or slow, what’s the difference, so long as you’re out there. At Peachtree, she almost cracked the 3-hour barrier. Maybe next year? She’s got a number of family members to accompany her and keep her motivated. 


Lindberg is also a regular at several other Atlanta races, and has set some USATF national records in recent years. She holds the 90-95 road record for 5K, 55:48. Here’s a short article about her Peachtree race, and here’s a longer one with much more background--all the way to her birth in September, 1924. Check out the joy and energy on her face.


SHORT STUFF You Don’t Want To Miss

>>> Run away from back pain: Some physiotherapists believe running is “the best treatment” for lower back pain.


HERE’S WHAT ELSE YOU WOULD HAVE RECEIVED this week if you were a subscriber to the complete, full-text edition of “Run Long, Run Healthy.” Why not give it a try? SUBSCRIBE HERE.   


# Run faster with this ONE simple form fix


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# Your ultimate guide to calf-muscle injuries


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# Pay attention NOW: Teen fitness linked to heart disease 40 yrs later


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DON’T FORGET: I spend hours searching the Internet for the best, most authoritative new running articles, so you can review them in minutes.


That’s all for now. Thanks for reading. See you again next week.  Amby


June 27, 2024

Below is the abridged version of my “Run Long, Run Healthy” newsletter for this week. You can SUBSCRIBE HERE to get the much longer and more complete, full-text edition. Thanks for reading. Amby 

4-Minute Magic--The Best Interval Workout

Two new papers look at a familiar and important question. You’ve trained yourself into good shape. You’ve got 4 to 6 weeks remaining before a big race. 


Now what? What should you do to boost your fitness and performance potential in those remaining weeks?


Here’s the payoff first, with supporting details to follow. The best way to improve your vo2 max and sub max threshold is probably with 4-minute intervals run at about your 10k race pace. 


Longer, slower intervals don’t provide enough stimulus. Faster intervals don’t last long enough.


That’s the conclusion reached by a research team that took matched groups of male and female subjects, and trained them for 6 weeks to see who would improve performance the most. Each group did a specific training session 3 times a week during those 6 weeks. The sessions ranged from “moderate,” to several of “heavy” intensity, to outright “sprinting.”


The “workout loads” were also matched. In other words, the slower your intervals, the more total time you had to run. The faster your intervals, the fewer minutes you ran.


Result: The moderate training group made essentially no gains in 6 weeks. If you keep doing the same training you’ve been doing, you won't get fitter. 


Also, running a bunch of 30-second “sprints” was suboptimal at improving vo2 max and lactate threshold. The winning workout consisted of 4-minute intervals run 10 percent faster than threshold pace (tempo pace). 


Subjects did 5 to 6 of these, with 3 minute recoveries between. The researchers noted that this type of effort produced good results for almost all subjects. They even argued that it should be adopted by cardiac rehab programs, since the lower intensity training of such programs doesn’t improve fitness very much. 


Previous studies have also found that 4-minute intervals appear to be the right length for improving vo2 max. More at Medicine & Science in Sports and Exercise with free full text.


But could you get even better results with more strength training rather than more interval sessions? A Brazilian team investigated this question with a group of “well trained runners.”


Half the runners did 4 weeks of hard intervals while the other half did 4 weeks of heavy/explosive resistance (strength) training. Result: The interval training improved 1500 meter times by about 2.4%, and the resistance training improved 5000 meter times by 1.6%-1.7% Conclusion: “Both resistance training and high intensity [interval training] constitute an alternative for training periodization.” More at J of Sports Sciences.


Fast Track To Strength Gains: Get Stronger In Less Time

I know there are plenty of high-fit athletes who really enjoy their time in the gym hefting weights. And I know we all need to do regular resistance (strength) training.


But there must be many folks like me who want the shortest, simplest program to get their strength work done. That way we can return quickly to our preferred cardio training. Several new papers provide helpful guidance. 


The first, a not-yet-published preprint, compared the effects of traditional strength training vs super-set strength training. The traditional routine involved 4 sets of one exercise, followed by several minutes rest, then 4 sets of the next exercise. When doing super-sets, subjects did one set of the first exercise, followed immediately by one set of the second, then took several minutes rest. Both routines eventually completed sets on the same 6 popular strength exercises. 


Result: Strength grains were equal both ways, but the super-sets took 36% less time overall to complete the full routine. Thus, “supersets  appear to be a time-efficient alternative for eliciting muscular adaptations.” More at Sport RXiv with free full text. 


The next paper, a systematic review and meta analysis, compared traditional strength training to “drop set” training. When performing drop sets, the subject lifts a weight to volitional failure once, then slightly decreases the weight, and lifts to failure again. 


Result: Muscle gains were equal with both forms of strength training, but drop sets took 33% to 50% less total time. Thus, “Drop sets present an efficient strategy for maximizing skeletal muscle hypertrophy.” More at Sports Medicine Open with free full text.


The Sex Debate: Who’s Better In Ultra Endurance Races?

The sexiest question in running is literally the sex question. Are females catching males in endurance performance, particularly in ultra-endurance?


The discussion was first broached in a 1992 “Scientific Correspondence” in Nature (with free full text.) The authors pulled together a few data points to show that women marathoners would likely catch their male counterparts in 1998, and soon surpass them.


Well, no, that didn’t happen. But a lot has changed in running, particularly women’s running, over the last 30 years. So where does the male-female sex difference stand in 2024?


If we look at the sex difference between the current world marathon records (2:00:35 and 2:11:53), we see that it stands at 9.4%. That’s close to the 10% gap that has long separated male runners from female runners. 


However, these real-world comparisons face a significant problem: There are far fewer women than men in ultra races, usually just 10 to 30% of the total field. This tilts the scales of fairness, so to speak. Things might be different if females made up 50% of all ultra runners.


That’s an issue that researcher and ultra-runner Nick Tiller tried to answer in a recent journal paper and online article. Tiller’s a “skeptical scientist” and book author, as well as a columnist at Ultrarunning Magazine, so his ideas carry substantial weight.


Tiller began by digging into ultra-running race results until he found two events with essentially equal numbers of male and female finishers. His subsequent analysis produced both an academic paper at Applied Physiology, Nutrition, and Metabolism and a lengthy column titled “Are Women Closing The Gap?” at Ultrarunning.


What did Tiller find? In a 50-mile race, there was no significant overall finish-time difference between the sexes, but the top-10 males were much faster than the top-10 females.


In a longer race,100 miles, there were no significant differences in either analysis: overall, or top-10. Conclusion: “The sex-based performance discrepancy shrinks to 1-3% in ultramarathons when males and females compete in comparable numbers.” 


If that number holds up, it’s a lot less than 10%, and lends credence to the female-endurance hypothesis. For social-cultural reasons, women were slower than men to begin entering traditional road races, 5K to marathon. But now they have mostly caught up. 


The ultra world lagged still farther behind. It was once seen as the province of strong, testosterone-driven men. That too is changing rapidly. As the change accelerates, we’ll learn more about the sexy subject of sex and endurance performance. 



SHORT STUFF You Don’t Want To Miss

>>> Build more bone: How to use cardio exercise, strength training, and balance to improve your bone health 



HERE’S WHAT ELSE YOU WOULD HAVE RECEIVED this week if you were a subscriber to the complete, full-text edition of “Run Long, Run Healthy.” Why not give it a try? SUBSCRIBE HERE.  


# Super shoe secrets: How to find the best super shoe for you


# Don’t get bushwhacked by these running myths


# How CPR saved a veteran marathoner’s life


# Healthy (Exercising) Pregnant Mother = Obesity-Proof Baby


# The Step-Up Solution: Build More Speed & Hill-Running Power


# Back on track: How to limit low back pain while running


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# A great quote from Mahatma Gandhi on the importance of will power.


DON’T FORGET: I spend hours searching the Internet for the best, most authoritative new running articles, so you can review them in minutes.


That’s all for now. Thanks for reading. RLRH will not be published next week. You’ll receive  your next newsletter on July 11, 2024.  Amby