TT037: GI Distress I High Intensity Training I Heat Acclimation Benefits

Subscribe via iTunes

PhD Micah Zuhl

Micah is a professor at Central Michigan University and he shares his research and experience.

GI Distress & Glutamine Supplementation

He has published research on GI distress during intense training.  His studies have found that doses of glutamine can help prevent leaky gut and reduce the likelihood of GI distress.

The oral doses used in his study were .9g per kg of fat free mass (lean body mass) per day, spread out over three doses, for a period of 7 days.  His studies on the topic were published in the Journal of Applied Physiology (Jan 15, 2014) and also Cell Stress & Chaperones (July 26, 2014).

Note that their may be side effects of glutamine use. Pregnant and breast feeding women may want to avoid supplementation. WebMd list potential side effects here.  As with any supplement, take responsibility for your decisions and do proper research and consultation with your doctor in advance.

High Intensity Training

We also discussed the benefits of high intensity interval training. He wrote an article on the topic which is available here.

Heat Acclimation

Finally, we briefly discussed benefits of heat acclimation for improved performance during all conditions, not just hot conditions.

Subscribe via iTunes

TT036: Functional Strength For Triathlon With Chuck Wolf

Subscribe via iTunes

Chuck Wolf

Chuck joins the show to talk about strength and flexibility for triathletes.  Chuck is the Director of Human Motion Associates in Orlando, Florida.  He’s worked with top athletes in several sports.

Chuck was a speaker at one of my triathlon camps in Florida, and he’s had excellent success overcoming injury issues experienced by two of my triathlete friends.

His website is 

Subscribe via iTunes



TT035: Matt Dixon & “The Well-Built Triathlete”

Well-Built TriathleteSubscribe via iTunes

“It’s a resource for athletes to become empowered to think about the way that they approach their sport and give some insight into my methodology and to steer athletes to look through the correct lens of how to approach performance and how to improve over the long term.”

Coach Matt Dixon

Matt is a San Francisco based coach to several pros and age group athletes.  He discusses his new book, The Well-Built Triathlete.  This comprehensive book is packed full of great information for triathletes, and it’s one I would recommend to any triathlete.  In the podcast interview he gives more insight into his methodology and experience.

Matt’s website:

Twitter @purplepatch


Subscribe via iTunes

TT034: Half Ironman Pursuit Part 2

Subscribe via iTunes

Postrace Half Ironman Interview With Rodrigo

Rodrigo is back for a follow up interview after the Syracuse 70.3 Half Ironman.  Rodrigo was the guest in episode 33, an interview we did in early April, as he was preparing for this June 22, 2014 race.Rodrigo Finishing Syracuse 70.3

Continue reading

TT033: Training Questions & Half Ironman Pursuit

Subscribe via iTunes

Half Ironman Training Questions

Rodrigo Chaves is the guest for this episode and we discuss several questions based around half ironman training.  Rodrigo lives in New Jersey and 2014 is his second season of racing triathlons. He’s competed in running races for the last 4 years and he’s been swimming for 8 years. He is training for the Syracuse Half Ironman 70.3 on June 22.  Rodrigo at Syracuse 70.3

Be sure to check out episode 34 for his post-race interview.

Here are his questions that we discussed in the interview:


1. What’s the common volume of training for a person on their second season training for their first half? I feel like my training compared to others might have too much volume. Here’s the breakdown: Continue reading

TT032: Stages Cycling Power Meter & Saunas

Subscribe via iTunes

Ben Sharp of Stages Cycling

I interview Ben Sharp of Stages Cycling about the Stages Power Meter.  Ben was a coach for USA Cycling from 2007 to 2013 before joining Stages.  The Stages Power Meter runs $700-$900 plus a head unit, such as a Garmin or even an iPhone.

I was an SRM user and I did this interview because I was genuinely curious about this lower cost power meter.  I came away persuaded that it is an excellent option. Ben points out some of the advantages:

  • Lower cost
  • Easy  assembly and setup.
  • It can easily be switched between bikes.
  • Simple maintenance and firmware updates

Ben stated that accuracy is within 2%.  Power is measured only from the left crank.  

Are Saunas The Next Big Performance Enhancing “Drug”

The Five Fingers Settlement Didn’t Settle the Barefoot Running Debate

Subscribe via iTunes


TT031: A 15 Year Ironman Hawaii Qualification Story

Subscribe via iTunes

Dan Dungan At Ironman Texas

Dan Dungan started racing triathlons in 1999 with the Memphis and May. His first Ironman was in 2000.   Going into 2014 he had started 20 Ironmans, finishing 17, but had never qualified for

He did it!

He did it!

Ironman Hawaii.  He was persistent in his training, he learned each year, and at Ironman Texas in 2014 he took another shot at qualifying.

Dan and I discussed his progression over the years, the lessons learned, and his strategy for Ironman #21.  He’s consulted with Gordo Byrn for several years and continued to modify his approach.

At age 57 he was racing in the 55-59 age group and the expectation, which wouldn’t be confirmed until the morning after the race, was that there would be just two Ironman Hawaii spots in his age group.

In his previous 3 Ironmans he had a third place and two fifth places in his age group, and the gap between his time and the time required to qualify was narrowing.

As a weak swimmer he decided to do a major swim block in early 2014.  For 6 weeks he averaged 20,000 yards in the pool.  To accommodate the higher volume he wisely backed off on intensity for many of his workouts.  He also modified his nutrition plan for this race, going with less calories than normal (250 per hour on the bike).

His strategy was to push the first couple hours of the bike, anticipating a tailwind. His goal was 180 watts for the early part of the race.  Coming back into the headwind he was shooting for 165-170 watts.   On this run his goal was to keep the first 3 miles easier, and then bump up the effort to little faster than his average goal pace.

His planning all paid off as he finished second in his age group and earned a spot to Hawaii. He finished in 10:32:22 with splits of 1:12:46/5:18:41/3:52:03.  He was 16 minutes out of first and 17 minutes ahead of third place.

TT030: Intensity Factor, Ironman Boulder History, More Heat Acclimation

1. Vibram Five Finger Shoes

2. Intensity factor for different distances

If you use a power meter and know your functional threshold power (FTP), you can use the following intensity factor guide for your racing.  An intensity factor of .70 means your should be racing at 70% of your FTP.   These numbers are taken from Joe Friel’s Power Meter Handbook page 73.

Ironman age group .60-.70
Ironman elite .70-.79
Half ironman age group .70-.79
Half ironman elite .80-.89
Olympic and sprint triathlon .90-1.04

3. How to train on a tight schedule. Continue reading

Heat Acclimation Protocol

Suggested Heat Acclimation Protocol

I created this protocol based on an interview I did with George Dallam in episode 25.

Methods For Heat Acclimation

1. Wear additional clothing to cause additional sweating during training.

2. Turn up the heat and use a humidifier while training indoors.

3. Soak in a hot tub at 100-105 degrees.

Hot Tub Protocol 

For Peak Races

In the two weeks before your peak race progressively increase hot tub time to a maximum of 1 hour, or 50% of your expected race time.  For races Continue reading

TT029: Aerodynamics With David Ripley & Vibram Five Finger Shoes

Subscribe via iTunes

Aerodynamics With David Ripley of Zipp

In addition to working for Zipp, David is also a bike fitter and consultant for 51 Speed Shop.

Topics discussed include:

  • The Four restrictive properties working against you on the bike are:

1. Aerodynamics
2. Gravity
3. Drivetrain Friction
4. Road Friction

  • 75-80% of aerodynamic drag comes from the body.  The wheels are the second greatest source of drag.  Components are next, and the frame is last.  
  • Weight doesn’t become a significant factor until the grade hits 6% for an extended period of time. 
  • A good clincher and latex tube compared to a poor tire and a butyl tube can result in a 10-11 watt difference per tire.  
  • He recommends air pressure of 100psi for a 150 pound rider on a tri bike on a smooth road.  On a rough road a slightly lower tire pressure is recommended. 

Biggest bang for your buck in aerodynamics 

Vibram Five Finger Shoes

A 10 week study published in the July 2013 issue of Medicine & Science in Sports & Exercise compared two groups of runners.  A group of 19 who slowly transitioned to the use of Vibrams over 10 weeks, and 17 who ran in conventional running shoes.

Using MRIs for analysis, 10 of the 19 in the Vibram group were determined to have a foot bone injury by the end of the 10 weeks.  Only 1 of the runners in the control group had a foot bone injury at the end of the study.

Runners in the control group ran an average of 30 miles in their peak week, while those in the Vibram group ran an average of 15-18 miles in their peak week.

This article describes the study in a little more detail.

Based on a lawsuit against Vibram settled in May 2014, Vibram Five Finger users may be entitled to a settlement that will likely be in the range of $20-$50. Details at

Subscribe via iTunes