This article was co-authored by Laila Ajani and by How.com.vn staff writer, Eric McClure. Laila Ajani is a Fitness Trainer and founder of Push Personal Fitness, a personal training organization based in the San Francisco Bay Area. With over 10 years as a trainer and exercise specialist, Laila has expertise in competitive athletics (gymnastics, powerlifting, and tennis), personal training, distance running, and Olympic lifting. Laila is certified by the National Strength & Conditioning Association (NSCA), USA Powerlifting (USAPL), and she is a Corrective Exercise Specialist (CES).
There are 11 references cited in this article, which can be found at the bottom of the page.
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If you’re looking to bulk up or improve your one-rep max at the gym, activating your fast twitch muscle fibers can be a serious game changer. Every muscle in your body is made up of a combination of fast and slow twitch muscle fibers. Fast twitch fibers are activated during explosive movements, while slow twitch fibers help with repetitive, slower movements. As a result, you can target fast twitch fibers by making a few minor changes to your exercise habits. Read on if you want to know more about how your muscles work and what you can do to get those fast twitch fibers twitching even faster!
Steps
Expert Q&A
Tips
- Different muscles perform different functions, so certain muscles may naturally have more fast twitch or slow twitch fibers. For example, your soleus muscle in your lower leg is mainly responsible for sitting and maintaining your posture. These are mainly endurance-based activities, so the soleus doesn’t have a ton of fast twitch fibers. This doesn’t really impact anything from an exercise perspective, though.[13]Thanks
Expert Interview
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References
- ↑ https://www.bbc.co.uk/science/humanbody/body/factfiles/fastandslowtwitch/soleus.shtml
- ↑ https://medlineplus.gov/ency/imagepages/19841.htm
- ↑ https://www.scientificamerican.com/article/muscles-genes-cheats-2012-olympics-london/
- ↑ https://youtu.be/3xTjnwo2S2A?t=14
- ↑ https://www.unm.edu/~lkravitz/Article%20folder/hypertrophy.html
- ↑ https://www.mensjournal.com/health-fitness/muscle-fiber-test/
- ↑ https://pubmed.ncbi.nlm.nih.gov/12811774/
- ↑ https://medlineplus.gov/genetics/understanding/traits/athleticperformance/
- ↑ https://youtu.be/3xTjnwo2S2A?t=3
- ↑ https://digitalcommons.wku.edu/ijesab/vol2/iss8/108/
- ↑ https://www.unm.edu/~lkravitz/Article%20folder/hypertrophy.html
- ↑ https://www.patriotledger.com/story/lifestyle/health-fitness/2013/07/07/keeping-fit-to-avoid-fast/37954908007/
- ↑ https://www.bbc.co.uk/science/humanbody/body/factfiles/fastandslowtwitch/soleus.shtml
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