July 18, 2024

Training Tips From Kenya’s Top Running Coach

Patrick Sang was an elite steeplechase runner in the 1990s, but since then has become known as coach to some of Kenya’s top distance runners. These include Faith Kipyegon and 2-time Olympic Marathon winner Eliud Kipchoge, who’s aiming for an unprecedented third Marathon gold medal in Paris.


Kipyegon has also won gold medals (1500 meters) in the last two Olympics. She recently broke her own world record in the metric mile, and will be running again in Paris.


What sets these athletes apart? Sang believes it could be the regular inclusion of long runs in their training programs. Both Kipyegon and 800-meter star Wycliffe Kinyamal cover up to 25 miles in practice even though their races take them only 100 seconds to 14 minutes.


When Kipchoge could place no higher than 10th in the Tokyo Marathon last February, marathon observers wondered if he was nearing the end of his legendary career. Kipchoge himself acknowledged that he had been stressed by threats he and his family received after the car-accident death of Kelvin Kiptum earlier the same month.


Sang addressed the doubts about Kipchoge on two levels. First, he said that Kipchoge “is the easiest person to train. Eliud knows why he is training, he knows this is the time for this, this is the time for that. He knows why he is doing it.”


Second, Kipchoge is now running for a different purpose than earlier in his life. Then he wanted simply to make it to the Olympics, to run fast times, to win races. Now he has a different outlook. “He is thinking about legacy,” notes Sang. He hopes that he “can influence people.”


Kipchoge is famous for his calm but steely resolve. How much does that underpin his marathon success? As Sang notes: “People who love sport, even the scientists, they want to know: Is it the mind or is it only the body?”


That’s a topic we will be debating forever. Paris will provide more context. The men’s Olympic Marathon will be run on Saturday, August 10 at 8 am Paris time (2 pm USA Eastern time). More at Athletics Weekly.


6 Reasons You Should Eat Like A Tour De France Rider

I always enjoy reports about diet and fueling practices of the Tour de France riders. They need to eat optimally for those long daily rides. 


Even more important, they’re sponsored by big corporations who can afford the smartest physiologists and nutritionists. These folks don’t muck around with unproven supplements and supposed performance enhancers. They rely on the best science.


This new article is deep and well-sourced. You might not have time to read it all, so here’s what I learned:


1--Rice, rice, rice. White rice. It seems to be the favored carbohydrate grain because it’s gluten free, low fiber, and easy to digest.


2--Espresso, espresso, espresso. This is France, after all, and espresso is the pre-ride caffeine drink of choice. 


3--Riders now aim for up to 120 grams of carbohydrate intake/hour during the day’s ride. This is 50% more than just 10 years ago, and made possible with hydrogels and other high-carb formulations.


4--Ketones are now used as a post-ride recovery food, not for pre-race performance.


5--Some teams believe that cherry juice assists recovery, so riders drink sweet cherry beverages immediately post ride.


6--Haribo gummies! Riders enjoy their candies after a depleting day in the saddle. More at Velo Outside.


5 Big Marathon Lessons Straight From The U.S. Olympic Team

Fiona O’Keeffe, Emily Sisson, and Dakotah Lindwurm will be running the Paris Olympic Marathon on Sunday, August 11--the day after the men’s marathon. They proved their Olympic mettle by qualifying in the U.S. Olympic Marathon Trials last February. 


Amazingly, the Trials race was O’Keeffe’s first marathon, and she won the whole thing. Lindwurm is a veteran. She has run 12 marathons, including two victories at Grandma’s in Duluth, MN, her home state. She credits much of her success to a longtime favorite mantra:  “I am strong; I am fast; My speed will last.”


Here the Olympians share 5 other strategies they believe important in the marathon. I’m not sure I can endorse Sisson’s suggestion to “turn off your brain,” as I believe the marathon is a thinking runner’s race, and it’s hard to think with your brain defused. 


But I know what she means when she suggests, “Embrace the chill.” Yes, relaxation is important if you want to maintain optimal effort for 26.2 miles.


My favorite tip is one Lindwurm has obviously learned from her dozen marathons: “Low moments fade.” She says: “You just have to roll with them so that you can get back to the good patches.” Every marathon involves a bit of roller-coastering between good and bad stretches.


Finally, I’m impressed that O’Keeffe is looking forward to the tough, hilly Paris course. “I’m excited. I think a challenging course presents more opportunities.” That’s definitely the way to think about your marathons: Find the opportunities, and run with them. More at Run Outside.


Sweat and Sodium: The Runner's Guide to Optimal Salt Intake

Marathon and ultra runners are always looking for strategies to feel better and run stronger with less muscle cramping in their big races. These days I can’t go to any event without meeting several runners who are convinced that more salt is the key. 


Apparently marathon-running nutritionist Meghann Featherstone is encountering many similar folks. To offer them reasonable guidelines, she has constructed a “Sodium Chart & Calculator.”


First, you decide if you rank as “Light/Moderate/Heavy” on a sweating and salt-loss scale. Then you enter the length of your long runs or races. The Calculator responds by suggesting how much sodium you need to consume per hour of running.


This is a simplistic approach, and Featherstone admits as much, especially when it comes to “Heavy” sweaters. For them, each suggestion gets the following footnote: “The amount of sodium needed for salty sweaters can vary greatly.”


She also notes that many followers have sent her research articles indicating that runners don’t need extra sodium, and “that sodium intake during runs does not improve performance.” She’s ready for that one, commenting: “Many of the studies have small sample sizes and don’t adequately reflect the dramatic differences from runner to runner.”


Featherstone remains a believer. She concludes: “While not everyone will see a specific performance improvement during their runs when they change the amount of sodium consumed, the cumulative effect over a hot season of training is undeniable.”


If you’d like to consider your sodium options on the run, this is a good place to begin. Featherstone provides lots of solid advice in addition to her Calculator. More at Featherstone Nutrition.


Step Up To Stronger Running, Faster Races (And Fewer Injuries)

Many runners fail to appreciate that running is a one-leg-at-a-time activity. We basically hop from one foot to the other. 


This means that the most effective strengthening exercises will be those that we perform with one leg. For example, the single-leg bridge exercise (here) is better than doing the same exercise with both legs planted on the floor.


Step-ups are another simple but effective single-leg exercise for runners. They build strength and stability of key running muscles, in particular simulating the movements involved in hill running (and cycling). That’s one reason why former champion triathlete Mark Allen has long recommended the specificity of the step-up exercise. 


Here’s all it takes: “Perform step-ups in the gym by stepping on a plyometric box, an adjustable aerobic step, or a weight bench. Outdoors, use a picnic bench, a tree stump, or a large, flat rock. Your step must be stable and the area around your step must be clear of tripping hazards.” Add hand weights (or a weight vest) to your routine as you gain confidence and proficiency. More at Triathlete. 


Slithering Sustainability: How Python Meat Could Save The Plant

Many of us make our dietary choices based on personal health, performance, and planetary-health outcomes. The latter is a relatively new concern, often based on the fact that meat and other agribusiness processes deplete vast resources on a challenged planet.


This raises the question: Can a low-resource diet also be a healthy one? A major new study answered “Yes” to that question.


When Harvard researchers investigated more than 200,000 subjects (with 34 years of followup), they found that a higher Planetary Health Diet Index (PHDI) was associated with a “lower risk of total and cause specific mortality and environmental impacts.” More at American J of Clinical Nutrition with free full text.


A round up of this and a similar paper reminds us that Earth-friendly foods are not always healthy. Indeed, if they are ultra processed: “Poof! All the virtue goes up in smoke.” More at ConscienHealth.


If you’d like to avoid the worst ultra-processed foods, you’d do well to stay away from highly processed meat and soft drinks laden with sugars and sugar substitutes. More at CNN.


And if you like the taste of python meat (reportedly much like chicken), you should consider eating more of the slithery snake because “python farming may offer a flexible and efficient response to global food insecurity.” More at Scientific Reports with free full text.


Multivitamins & Mortality: The Whole Truth

A recent study on multivitamins and mortality garnered headlines worldwide, and probably spread a good deal of misinformation. Why? Because many of those headlines were inaccurate and alarming. 


Here’s the article title, “Multivitamin Use and Mortality Risk in 3 Prospective US Cohorts,” and a free full text link at JAMA Network Open. As you can see, the title gives away no key information. 

The article itself concluded: “Multivitamin use was not associated with a mortality benefit.” To put it simply: Vitamins don’t help you live longer. 

Some headlines got that message right. Others, however, missed the mark. These included: “You’re Better Off Without Multivitamins,” “Multivitamins May Actually Increase Risk of Early Death,”  and “Study Connects Multivitamin Use With Mortality Risk.” 

The actual study followed more than 390,000 U.S. adults for 20 years to see how their vitamin use affected their mortality. It found no significant association in one direction or the other.

These results--neither positive nor negative--supported past findings on vitamin use and mortality. That probably explains why vitamin use dropped 6% from 1999 to 2011. Many of us have gotten the message that vitamin pills don’t necessarily deliver on their promise. 

The researchers nonetheless acknowledged that vitamins could have health effects not related to a longer life. They could protect pregnant women from deficiencies, promote bone health, and increase immunity.

About one-third of adult Americans continue taking a multivitamin, which are relatively cheap. Still, these individuals might be better off spending their money on fresh fruits and vegetables.

4 thuOver-40 Runners Need To Know About Super Shoes

Runner and physical therapist Matt Klein recently finished his PhD with a focus on the biomechanics of masters runners. A key contributor to the “Doctors of Running” podcast, Klein wondered in particular how masters runners might react to running in super shoes. In this blog, he summarizes what he has learned:


1--A stiff plate in shoes does not improve running economy of masters runners, and in fact shortens their already-shortening strides.


2--Masters rely more on hip muscles and less on ankle muscles than younger runners.


3--This means that masters runners may benefit from the super foams in super shoes. These foams move leg muscle “work” up toward the knees and hips. The foams also give more “bounce” to masters runners with their shorter strides.


4--Klein ends with “a word of caution,” noting that super shoes do shift movement patterns around, and this could cause injury issues for masters runners who are probably more injury prone than younger runners. As a result, he advises “runners interested in using these shoes should consider additional strength/power work.” More at Doctors of Running.


SHORT STUFF You Don’t Want To Miss

>>> The latest news on massage guns: What are they, how they work, and do they actually assist recovery and injury prevention?


>>> It’s up to you: Half of cancer deaths can be avoided through smart personal choices


>>> Live long & healthy: Elite athletes have lower suicide rates than the general population


GREAT QUOTES Make Great Training Partners

“Your body will argue that there is no justifiable reason to continue. So call on your spirit, which fortunately functions independently of logic.”

--Tim Noakes, South African running expert and book author


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



July 11, 2024

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.


Optimize Your Running Form With This ONE Change

Bas van Hooren is a great running researcher engaged in exploring many aspects of training and biomechanics. Tom Goom is a British physiotherapist who frequently uses infographics to explain the latest research. Both contribute here to this discussion of runner biomechanics and running economy. 


A recent van Hooren paper in Scandinavian J of Medicine & Science in Sports used an “artificial neural network (ANN) approach” to analyze various aspects of good running form. He found, in particular, that a high heel-kickback was linked to inefficient running. That is, “More economical runners exhibited less knee flexion.” He also noted several other running-form factors related to running economy.


Goom presented the same information in an easy-to-grasp infographic here. He takes the technical data and presents it in a familiar fashion--as a runner’s body moving through space. This includes advice about heel kickback, forward lean, and ankle toe-off, and how they relate to running economy. This is a great and useful contribution.


For a brief review of a runner’s “stance phase” vs “swing phase,” here’s more visual guidance from Doctors of Running.


Run Better In The Heat With … ??? Frozen Water Balloons???

Not to beat a dead horse … but if it wasn’t hot enough already, the July 4 holiday reminded us of what’s coming this summer. So here’s a brief summary of recent (and important) articles about endurance performance in the heat. 


The Gatorade Sports Science Institute has one of the best overviews on adaptation to the heat. It takes 1 to 2 weeks of “daily heat exposure” (about 90 minutes/day) for your body to become acclimatized to the heat. That doesn’t mean you can race as you would on a 50 degree day. But you can get better, and feel better.


The NY Times wondered how the Olympians are preparing for a sultry Paris summer. This piece has great insights and advice from Ed Eyestone, coach to Olympic marathon runners Conner Mantz and Clayton Young. Did you know about the frozen balloons trick? Me, neither.


The “Sweat Science” guy, Alex Hutchinson, visited the University of Oregon to try one of the techniques many Olympians are using: hot baths (or saunas). He turned red-faced and miserably unhappy from the heat, and wondered if too much heat adaptation could diminish one’s on-the-run training. Good question. 


Two recent papers raised new red flags about running in the heat. One found that it increases your carbohydrate burn. Another that it could increase injury risk. Why? Because “the physiological response to heat stress is similar to but more severe than the physiological response to prolonged exercise.” 


The greatest threat with hot/hard running in summer weather is heat stroke. Dr. Gabe Mirkin explains why this should never affect you … unless you’re running in the Olympics, as Gabriele Andersen was 40 years ago at the 1984 Games. Otherwise, just stop, seek shade, and douse yourself with cold water if possible. (By the way, Andersen was completely fine 15 minutes after finishing the marathon, and ran a road race without problem the following weekend.)


An article in Exercise, Sport & Movement assesses “critical environmental limits for human thermoregulation” in a time of climate change. Especially vulnerable are “young children, the elderly, pregnant women, and outdoor laborers.” The latter er could be extended to outdoor endurance athletes. 


And the problem is double-edged. Temps are rising, and so is obesity, which makes the body more vulnerable to heat. Conclusion: These factors provide impetus to the “urgency for adaptive measures and climate change mitigation.”


How To Prevent Knee Arthritis With Broccoli & Bicycling

“Arthritis” is one of those words no runner ever wants to hear. Or, worse, to experience. 


It immediately conjures images of knee and/or hip pain, and a possible need to take drastic action. Some give up running and switch to the bike or swimming pool. Others eventually agree to surgery and joint replacement. 


Strong NSAIDs provide temporary relief from arthritis pain. However, long term use is not recommended, due to side effects and various risks. As a recent preprint paper notes: “New options are required to reduce pain and improve quality of life for people with OA.”


Okay, here’s one you didn’t expect: broccoli soup. A small but well designed and randomised controlled trial in the United Kingdom found that: “High glucosinolate broccoli soup is a novel approach to managing OA that is widely accessible and can be used on a large scale.”


Subjects had all been suffering from knee pain for a number of years. They ate one 300 ml bowl of a “high glucoraphanin” broccoli soup at least 4 times a week for 12 weeks. Glucoraphanin is a phytonutrient found in many cruciferous vegetables, and also in supplements. (The study was not funded by a commercial entity.)


After the BRIO soup intervention (BRoccoli in Osteoarthritis), subjects reported significantly lower arthritis pain scores and fewer bad-joint days. Broccoli and similar foods (sprouts, kale, cabbage) have been linked to many other healthy outcomes.


Conclusion: The researchers say they “observed clear patterns for improved pain across a range of pain measures.” More at MedRXiv with free full text.


Also a lifetime of bicycling is associated with lower risk of knee pain and arthritis. It appears that more is better, both in terms of years cycling and time/week. More at Medicine & Science in Sports & Exercise.


Here’s Your Ultimate Guide To Calf Muscle Injuries

Calf injuries aren’t the most frequently reported running injuries, but they aren’t far from the top either. They afflict many runners, and they come and go at irregular patterns. They often prove resistant to long-term prevention. This makes them extremely frustrating.


Here’s a long, deep article that offers a complete guide to rehabbing from calf injury, and preventing the next one. It’s based on 20 extensive interviews with “a select group of international experts.” Nobody’s wearing rose-colored glasses here; no one’s pretending that they’ve got a sure-fire program.


But they are cautiously optimistic, stating “There is hope for preventing calf muscle injuries.” However, “Don’t expect a single intervention to do the trick.”


If you suffer from calf-muscle injuries, you should read the complete guide in its full-text version at the free link below. Here are a handful of highlights. 


  1.  After just a day or two of isometric exercises, most experts begin to prescribe single-calf raises. One expert said that he didn’t bother with double-leg raises, because patients “just cheat.”


  1.  Calf muscle strengthening is “a cornerstone of building muscle capacity and resilience.”


  1.  Don’t return to running by “plodding” for distance. You will get better results from running less but at a quicker pace.


  1.  “Don’t run a calf muscle like you would run a hamstring (or quad, or adductor).” That is, accept a slower, more-delayed return to running in order to reduce a re-injury. 


  1.  When healthy, continue your calf-strengthening exercises. “The single-leg calf raise has a universal role for training.” You should be able to do 30 at a time.


More--much more--at Sports Medicine Open with free full text.


The Results Are In >> Low Cal Diets Threaten Your Immunity

Most coaches, nutritionists, and other exercise scientists understand the dangers of low energy intake (LEA, low energy availability) on endurance athletes, particularly young females. Yet there have been few randomized trials in this arena. It seems borderline unethical to conduct such a trial, so I was surprised to discover this one.


It included 12 endurance trained, healthy and menstruating women (average age, 27) with body mass of 18-23 (pretty low), and 6 hours a week of endurance exercise. They were each randomly assigned to a normal-eating group, or a low cal group (about 55% less than normal). Both groups spent 14 days of regular training on the assigned diet, then returned to 3 days of normal eating before completing an exhausting 20-minute bicycle time trial.


After an 11 day “wash out” period, all subjects were switched to the opposite eating group, and the process was repeated. All received a range of blood tests during each diet period, and after the 3 days of returned-to-normal eating. 


Results: Subjects lost 1.5 pounds with normal eating, and 4.2 with low energy availability. On the exercise test, power output was significantly lower after LEA, and also lower when expressed as power/weight (despite the weight loss that might have increased this ratio).


The blood testing revealed “increased cortisol levels” and a pronounced negative effect on the immune system. 


Conclusion: “Our study illustrates a substantial impact of short-term LEA on the immune system.” This could heighten runners’ susceptibility to infections and disease. “These findings underscore the critical importance of limiting LEA exposure for female athletes.” More at Redox Biology with free full text.


Male athletes also face risks. Among 13 hard-training Irish runners and triathletes, 77% were found to have low energy intake. The researchers noted that this could “lead to impairments in bone health” as well as “reduced oxygen-carrying capacity.” More at European J of Nutrition with free full text.


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.

>>> Pay attention NOW: Teen fitness linked to atherosclerosis 40 years later.

>>> Run free (of worry): Weight-bearing exercise, like running, does not have “any detrimental effect on cartilage.”


GREAT QUOTES Make Great Training Partners

“If you’re lucky enough to be different, don’t ever change.”

--Taylor Swift