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Barbell Shrugged

Fat Free Mass Index Explained: A Better Body Comp Metric for Athletes with Dr. Andrew Jagim, Doug Larson, Travis Mash & Dr. Mike Lane #837

Barbell Shrugged

Doug Larson

Fitness, Health & Fitness, Nutrition

4.72.8K Ratings

🗓️ 25 February 2026

⏱️ 57 minutes

🧾️ Download transcript

Summary

In this episode, Doug Larson, Dr. Mike Lane, and Coach Travis Mash sit down with Dr. Andrew Jagim, Director of Sports Medicine Research for the Mayo Clinic Health System, to talk about what actually works for building stronger, more resilient young athletes. Andrew shares how his applied research feeds directly back into real-world coaching, especially for under-resourced D3 athletes, and why the best youth training is simple, fast, and consistent. The group also trades notes on training their own kids: short sessions, minimal setup, and keeping things engaging so the habit sticks for life.

They break down practical youth strength programming: unilateral work for stability (step-ups, lunges), basic patterns (kettlebell deadlifts, goblet squats, push-ups), and building hips/glutes to protect knees, especially for tall, fast-growing athletes where coordination and lever changes force constant "auto-regulation." A major theme is injury prevention without turning training into a grind: 15–25 minute workouts, circuits/supersets, park workouts with med balls and kettlebells, and even sneaky "commercial break" core work to keep kids moving while still letting them be kids.

The conversation shifts into sports nutrition, body composition, and a more athlete-friendly way to talk about physique, Fat-Free Mass Index (FFMI). Andrew explains how FFMI is calculated, what typical ranges look like for male and female athletes, and why it can be a more positive metric than body fat percentage, especially for female athletes where messaging can backfire. They close with a nuanced look at weight cutting in wrestling and combat sports: why massive cuts are physiologically brutal, how rules differ inside vs. outside the U.S., and why frequent dehydration (like in-season scholastic wrestling) is a completely different risk profile than occasional cuts with longer recovery windows.

Links:

Doug Larson on Instagram
Coach Travis Mash on Instagram

Transcript

Click on a timestamp to play from that location

0:00.0

Shrug family, Doug Larson here, and today on Barbell Shrugged, we talk with sports scientist Dr. Andrew Jagam.

0:06.7

He's an expert on exercise physiology and sports nutrition with a PhD in kinesiology and exercise science.

0:12.4

He's also the director of sports medicine research for the Mayo Clinic Health System.

0:17.1

And today we get into a very practical way to think about body composition that we really haven't talked about on the show very often.

0:22.6

And that is fat-free mass index, which is a measure of your lean mass, your muscle bone, connective tissue, etc., all relative to your height.

0:30.7

It's very similar to BMI, but instead of your total body weight, it uses your fat-free mass, which gives you insight into if you are over, under,

0:38.1

or adequately muscled relative to your height. Like most shows these days, we also talk about

0:43.1

strength training our kids without burning them out. It's kind of the dad coach problem, how to push

0:47.4

your kids just hard enough so they build the habit without causing them to rebel and to push

0:52.7

away and to try to get out of training.

0:55.2

So if you're a parent and you want to learn how to train your kids or you're interested in learning about fat-free mass index, this show is for you.

1:01.4

Enjoy the show.

1:04.4

Welcome to Barbell Strugg. I'm here with Mike Lane and Travis Mash and our guest today, Andrew Jagam.

1:10.2

You came in from hanging out with Dr. Mike Lane.

1:13.2

You guys have known each other for many years here.

1:14.9

So welcome to the show.

1:16.3

Yeah, thanks for having me.

1:18.0

Yeah, right on.

1:18.9

For those that don't know you, let's kick it off with your background, how you got into

1:22.5

sports performance and exercise physiology and all the things.

1:26.8

All right.

1:27.4

So currently my day job, I'm the director of sports medicine research for Mayo Clinic Health

...

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