MASS Office Hours Episode 5 (Tracking Hypertrophy, Satellite Cells, and Testosterone)
Oct 13, 2023
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In this episode, they discuss tracking muscle growth, satellite cells' role in muscle hypertrophy, intermittent fasting for muscle building, natural ways to boost testosterone, and unrealistic study designs. They also touch on the effects of microgravity, reverse vs recovery diets, protein distribution for muscle growth, and banter about bald men in movies.
Extended periods in microgravity can lead to muscle loss and bone density decreases, recovery diets help restore metabolic rate and hormone levels post-dieting, starting resistance training early maximizes muscle growth potential.
Deep dives
Effects of microgravity on muscle in space
Extended periods of time in microgravity can lead to muscle loss, decreased bone density, and even morphological changes in the brain. Strategies are being developed to counteract these effects, such as physical training and blood flow restriction.
Signs of building muscle vs. strength
Strength gains are not always indicative of muscle gains, especially in skilled movements. Signs of muscle building include changes in clothing fit, increased muscle mass in specific areas, and positive changes in body measurements.
Recovery diets and body fat percentage
Recovery diets are recommended for individuals who have dieted down to an unsustainable body fat percentage. They involve initially gaining some weight, usually in the form of fat, to restore metabolic rate and hormone levels. The specific body fat percentage for a recovery diet varies depending on individual circumstances. Additionally, recovery diets may be more beneficial for individuals who have engaged in an aggressive diet and are experiencing signs of adaptation related to metabolic rate and hormone levels.
Importance of Starting Resistance Training Early
Starting resistance training at a younger age allows for greater muscle growth compared to starting later in life. While untrained individuals can still experience muscle growth in their 60s or 70s, the magnitude of growth is smaller compared to starting in their 30s or 40s. Therefore, it is recommended to start resistance training early for optimal results.
Machine-Based Training and Safety Considerations
There is a preference among some individuals, particularly older adults, to transition from free weights to machine-based training. Machine exercises provide a more comfortable and standardized range of motion, which can be beneficial for joint health. Moreover, for individuals starting resistance training later in life or those with limited motor skills, safety becomes a crucial factor. It is important to prioritize exercises that promote stability, balance, and minimize the risk of falls. Personal trainers should also consider clients' medical history and potential physical limitations when designing workout programs.
In episode 5 of MASS Office Hours, Dr. Eric Trexler is joined by Lauren Colenso-Semple. They answer listeners' questions about microgravity, tracking muscle growth, reverse diets, recovery diets, satellite cells, intermittent fasting, natural approaches to increase testosterone, and much more.
The MASS crew goes live for Office Hours every Wednesday night at 7pm eastern time. Be sure to join us for a future episode!
Time stamps:
0:00 Introduction
1:54 Effects of microgravity
8:01 How to track muscle growth
14:19 Reverse diets vs recovery diets
23:23 Are satellite cells are required for muscle growth?
29:51 Training and protein for older adults (revisited)
39:52 Intermittent fasting for building muscle& staying lean
56:40 Eric has zero advice regarding hair loss
57:09 Can we boost testosterone enough to matter?
1:03:16 Designing unrealistic studies
1:14:03 Concluding remarks
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