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Muscle hypertrophy is the process of increasing muscle size, typically through weightlifting and resistance training. It involves a hypertrophy or increase in size of skeletal muscle through a growth in size of its component cells. Two factors contribute to hypertrophy: sarcoplasmic hypertrophy, which focuses more on increased muscle glycogen storage; and myofibrillar hypertrophy, which focuses more on increased myofibril size.
| Characteristics | Values |
|---|---|
| Definition | Muscle hypertrophy is the process of increasing muscle size, typically through weightlifting and resistance training |
| Muscle cells | Hypertrophy refers to an increase in muscular size achieved through exercise |
| Weightlifting | Weightlifting is the most common way to increase hypertrophy |
| Repetitions | When weightlifting, you can perform many repetitions (reps) at a lower weight or lift a heavy weight for fewer reps |
| Progressive overload | Muscular hypertrophy can be induced by progressive overload (a strategy of progressively increasing resistance or repetitions over successive bouts of exercise to maintain a high level of effort) |
| Muscle damage | The current accepted theory is that hypertrophy is achieved through the combination of mechanical tension, metabolic stress, and muscle damage |
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What You'll Learn
Weightlifting
To see growth, you need to continuously break down and challenge muscles. Progressive overload is a strategy of progressively increasing resistance or repetitions over successive bouts of exercise to maintain a high level of effort. This can be combined with mechanical tension and muscle damage to achieve hypertrophy.
It's important to note that muscle size and muscle strength are connected but not necessarily the same thing. You can have big muscles that aren't incredibly strong and vice versa. Therefore, hypertrophy training is a different process from strength training.
A protein-rich diet is also important for muscle growth. Focus on lean protein sources like plant-based protein powder, lean meat, chicken, and fish. Try to eat or drink a protein source within 30 minutes of a workout.
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Resistance training
There are two types of hypertrophy: sarcoplasmic hypertrophy and myofibrillar hypertrophy. Sarcoplasmic hypertrophy focuses on increased muscle glycogen storage, while myofibrillar hypertrophy focuses on increased myofibril size. Myofibrillar training will help with strength and speed, while sarcoplasmic growth helps give your body more sustained energy for endurance athletic events.
When weightlifting, you can perform many repetitions (reps) at a lower weight or lift a heavy weight for fewer reps. Progressive overload is a strategy of progressively increasing resistance or repetitions over successive bouts of exercise to maintain a high level of effort. This can be achieved through a combination of mechanical tension, metabolic stress, and muscle damage.
It is important to note that muscle size and muscle strength are connected but not necessarily the same thing. You can have big muscles that aren’t incredibly strong and strong muscles that aren’t massive. Therefore, hypertrophy training is a different process from strength training.
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Myofibrillar hypertrophy
Muscle hypertrophy is the process of increasing muscle size, typically through weightlifting and resistance training. It is important to note that muscle size and muscle strength are connected but not the same thing.
It is also believed that consistent anaerobic strength training will produce hypertrophy over the long term, in addition to its effects on muscular strength and endurance. This type of training causes neural and muscular adaptations, which increase the capacity of an athlete to exert force through voluntary muscular contraction. After an initial period of neuro-muscular adaptation, the muscle tissue expands by creating sarcomeres (contractile elements) and increasing non-contractile elements like sarcoplasmic fluid.
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Sarcoplasmic hypertrophy
The precise mechanisms of sarcoplasmic hypertrophy are not clearly understood, but the current accepted theory is that it is achieved through a combination of mechanical tension, metabolic stress, and muscle damage. However, there is insufficient evidence to suggest that metabolic stress has any significant effect on hypertrophy outcomes.
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Progressive overload
Muscle hypertrophy refers to the increase in the size, density and shape of skeletal muscles. It is usually achieved through weightlifting and resistance training.
It is important to note that progressive overload is just one strategy for achieving muscle hypertrophy. Other factors to consider include diet, the type of training (myofibrillar vs sarcoplasmic hypertrophy), and the specific exercises performed. Additionally, the precise mechanisms of progressive overload are not yet fully understood, and the best approach to achieving muscle growth remains controversial.
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Frequently asked questions
Muscle hypertrophy is the process of increasing muscle size, typically through weightlifting and resistance training.
Muscle hypertrophy can be achieved through progressive overload, which involves progressively increasing resistance or repetitions over successive bouts of exercise to maintain a high level of effort.
The two types of hypertrophy are sarcoplasmic hypertrophy, which focuses on increased muscle glycogen storage, and myofibrillar hypertrophy, which focuses on increased myofibril size.
The best approach to achieving muscle hypertrophy remains controversial. While consistent anaerobic strength training will produce hypertrophy over the long term, the precise mechanisms are not clearly understood.
