It is a well-known fact that muscles respond differently depending on the type of training they undergo. For example, engaging in resistance workouts with heavy weights leads to muscle growth and increased strength. Moreover, recent studies conducted at the University of Basel have revealed that such workouts trigger the release of a compound called BDNF (brain-derived neurotrophic factor) in the brain. This compound is responsible for enhancing the strength of muscle fibers.
Balancing Strength and Endurance for Optimal Performance.
In addition to promoting strength gains, BDNF, produced within the muscles, also induces various neurological changes. It remodels neuromuscular synapses by altering the connections between motor neurons and muscles. While strength gain is a positive side effect of these changes, studies have also indicated that they can result in a decline in the endurance of muscle fibers.
It’s important to note that when discussing the strength and endurance attributes of muscle fibers, we are referring to two distinct types of fibers: slow-twitch and fast-twitch. Slow-twitch muscle fibers are more prevalent in endurance athletes like marathon runners, whereas fast-twitch muscle fibers dominate among athletes requiring bursts of power, such as powerlifters and sprinters.
When BDNF is activated, strength gains come at the expense of endurance, meaning that fast-twitch muscle fibers replace slow-twitch fibers. This is why athletes training for high-performance sports take these factors into account to prepare their muscles to produce the desired type of output. Interestingly, muscles with lower concentrations of BDNF do not deteriorate as rapidly over time compared to muscles with higher concentrations of BDNF.
Muscle building involves a scientific approach. The inner workings of our bodies can vary dramatically based on various factors. That’s why it’s crucial to be clear about your goals, envision the desired outcome, create a diet and workout plan backed by science, and consistently work towards it! Whether it’s fast-twitch or slow-twitch muscles, consistency will always yield benefits.
