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Note from Ben: Holy schnikes! I gotta quit doing head math during my podcasts. I had an error on this one. Kid's protein should be closer to 0.6-1.4g protein per pound body weight. I had that almost doubled with my on-the-fly figuring...sorry.

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In this May 25, 2011 free audio episode: Brian Mackenzie of CrossFit Endurance (pictured above), protein intake and supplements for young athletes, blood sugar spikes from protein powder, take supplements with coffee, birth control and weight loss, losing weight for Ironman, elbow pain from curls, is casein ok for vegans and the pose running method.

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Featured Topic: "What Is Crossfit Endurance & Can You Use It For Marathons or Triathlons?"

Brian Mackenzie from Crossfit Endurance is an expert in strength and conditioning for endurance athletes, and is the creator of CrossFit Endurance. He is a Level 3 CrossFit Certified Trainer, and is a Level 3 POSE Certified Running Coach.

Brian has been working in the fitness industry to some degree for the last 20 years. He has an internship program for professional trainers.

Brian has been at the pinnacle of training athletes and clients of all shape, size and ability for the last decade. Starting his training career as a physical therapy assistant and volunteering with adaptive PE programs for stroke victims, he has used the simplest to the most complex of modalities.

Learning how to powerlift at an early age, Brian understood functional movement at the beginning of his career. Moving into the endurance world, he worked with Dr. Romanov (Creator of POSE Method of Running), and learned about running mechanics very early in his career. He has trained professional athletes from a multitude of sports including the NFL, MMA, and AVP, Running, Cycling, Swimming, and Celebrity.

Brian has successfully used CrossFit as the cornerstone of his programming for endurance athletes, while supplementing with sport specific wods. His athletes train sometimes a third of what the norm train with superior results.

Brian has been a competitive Ultra Runner. He competed in Ironman and more than 30 ultra marathons ranging from 50k to 100 miles including the Western States 100 and the Angeles Crest 100. During our interview, I ask Brian:

-what is crossfit endurance, and how is it different than regular crossfit?

-what principles do you use to guide workout design and programming?

-can you walk us through a sample week of workouts?

-how do you think crossfit endurance compares to the traditional method of triathlon training, and do you think someone could go faster in a triathlon with your method?

-how do you reply to critics who argue that weight training does not benefit endurance athletes?

During the course of the interview, Brian mentions Arthur Lydiard, Percy Cerutty and Peter Coe as additional references of information for Crossfit Endurance.

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Listener Q&A:

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Gina has a call in question: I have a question about my 13 yr old daughter. She's a swimmer and practices 2 1/2 hrs 4 times/wk and attends meets 2 times/month. My daughter is 5 ft 3 inches and weighs 103#. She swims year round and is off 3 weeks in the fall and in the spring. I noticed during her fall/winter season, she was often sick, fatigued, and her swim times didn't improve. After evaluating her food intact, I noticed she was only eating about 20-30 grams of protein/day. She is a "picky" eater and prefers carbs over protein. I have since been pushing protein, but I'm having difficulties getting her to eat a variety of sources. She will eat chicken, turkey, and eggs. I've tried a variety of whey protein smoothes, but she doesn't like them. She takes a multi-vitamin. I will be changing her to one you recommend on your web site. How much protein should she be getting and are there any other supplements you think would be helpful for her? Lori asks: I've been observing a pattern in myself in the last few months concerning protein powders and I'm hoping you can help me make sense of this puzzle. I've noticed when I consume a protein shake containing whey that my blood sugar takes a dive within an hour and I have to eat something else. I've observed with any mix with whey in it. I currently have some Hammer whey and some Mt. Capra double bonded goat protein powder. On the other hand, if I consume a protein shake with other kinds of protein--and in this case I'm referring specifically to Living Fuel (which is brown rice and yellow pea protein) or Nutiva Hemp protein powder that I can potentially go 4-5 hours quite comfortably. I thought perhaps it was just what I was adding to the powder or when I was using it. In an effort to sort it out, in the last month I started to use all of the above (proteins) in the exact same way (after exercise,) and I kept the added ingredients that I added exactly the same--almond milk and frozen strawberries. I got the same results. Whey behaves like it is giving me a glycemic spike--even when consumed in those first 30 minutes after exercise. Does this mean I just don't do well with whey? What is going on here --I'm perplexed.

Mike asks: Ben, you've mentioned that taking vitamin supplements near the time of drinking coffee can reduce the affects. How long before or after drinking coffee should one take supplements to get the most benefit.

In my response to Mike, I recommend reading http://www.pacificfit.net/coffee.php

Rebecca asks: I recently listened to one of your podcasts where talked about the negative affects of hormonal birth control.I have seriously been thinking about switching to a non-hormonal IUD because I think being on the pill has been hindering my ability to lose weight. In your experience, how much easier is it to lose weight being off of hormonal birth control? Also what is your opinion of non-hormonal IUDs?

Bill asks: I've listed to a number of your podcasts (which are excellent!) and hoping you can advise me on how best to lose approx 10 lbs over the next 2-3 months before I enter my build up phase for my next Ironman (IM WA  in December).   I'm 6'2"; 185 lbs and 48 yrs old.  The area I'd like to target is stomach and thighs.  I' recently started changing my diet to reduce intake of sugar; whites and processed foods and reduce on carbs in evening meal to reduce insulin response.  Your advise/tips would be greatly appreciated.

In my response to Bill, I recommend he:

-Go to the upper right corner of http://www.bengreenfieldfitness.com

-Do search for "fat loss video"

-Access the top 3 results

Mike Burns asks: I was wondering if you might be able to help me. I get pain on the inside of my forearm, just above the elbow when I use the preacher curl machine at the gym. It feels more like stop doing what your doing pain, rather then muscles being worked pain. The machine has stationary handles so I can't adjust the way my wrists are turned. I can do concentration curls with dumbbells, and curls with the cable machine with no problems. Should I just avoid the preacher curl machine from now on?

Etana asks: I'm a vegan Ben. Some vegetarian vegan products such as cheese have casein in them. Am I cheating on my vegan diet by consuming dairy subsitute products such as "dairy free" cheese and coffee creamer by consuming products with casein in them? It's hard to find dairy free products without casein, a milk derivitive.

Craig asks: What do you think of Dr. Romanov's Pose method of Triathlon? I've been a Pose runner for years but I'd love to hear your take in it.

Finally, Luke Powell calls in with a testimonial about the Triathlon Dominator.

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Remember, if you have any trouble listening, downloading, or transferring to your mp3 player just e-mail ben@bengreenfieldfitness.com And don't forget to leave the podcast a ranking in iTunes - it only takes 2 minutes of your time and helps grow our healthy community! Just click here to go to our iTunes page and leave feedback.

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