So, let’s start with the main thing - what is strength? It is not just the ability to lift something heavy. Strength is the ability to withstand resistance, be it the weight of a barbell, a heavy box, or even just wind resistance. And yes, the force of gravity is our constant “partner” in this matter, because it determines the weight of any object.
Interestingly, strength is not only affected by our muscles. Body structure plays a big role. For example, athletes with shorter limbs may have an advantage in strength exercises such as bench press or squats. Why? Because they need to cover a shorter distance to move the weight. But with long arms and legs, on the contrary, it is more convenient to perform deadlifts, where the amplitude of movement is greater.
Now about the types of strength. Strength comes in different forms, and each of its forms is tailored to its own tasks:
- Maximum strength is the absolute limit of your capabilities, how much you can lift at one time.
- Explosive strength (power) is the ability to develop maximum strength in the shortest time. Think about jumping or throwing.
- Strength endurance is how many times you can repeat a forceful action with a moderate weight before you get tired.
- Speed-strength endurance is a combination of the ability to move quickly and maintain force over time, common in many team sports.
To get stronger, you need to not only train, but also understand what makes your muscles strong. There are two key factors:
- Muscle cross-sectional area. The denser the muscle, the more force it can produce. It’s like adding more “power” to an engine. Muscle density is determined by the number of muscle fibers. The more muscle fibers, the more contractile protein that is the “motor” of our muscles, which in turn gives us more strength.
- Neuromuscular efficiency. This is how well the brain “communicates” with the muscles. The better this connection, the more muscle fibers you can use at the same time, and therefore, the more force you can exert.
And of course, sports pharmacology and nutrition: to increase strength indicators, athletes often use sports pharmacology, ergogenic supplements and sports nutrition. However, it is important to remember that the use of such means should be reasonable and controlled, since uncontrolled intake can be harmful to health. All these factors work together to help achieve maximum results in strength training.
Types of Strength and Their Importance in Training
Strength: Its Qualities
Let’s take a closer look at this topic from the perspective of Professor Tudor Bompa and make it even more understandable and practical.
So, Professor Bompa, based on scientific data, tells us that strength is not a homogeneous concept, and its types are important in the context of training for different sports. In fact, we need to look at strength from different angles:
- Quality of strength: that is, how exactly it manifests itself.
- The “strength-time” curve: how quickly strength can be developed.
- Type of muscle activity: which muscle fibers work.
- Athlete’s body weight: how weight affects strength.
- Specificity: how much strength is “tailored” to a specific sport.
Let’s delve into the three main qualities of strength that are important for training:
- Maximum strength. This, as the professor says, is the absolute limit of your capabilities - how much you can lift at one time. It depends on two main factors:
- Hypertrophy - increasing muscle size.
- Neural adaptation - improving coordination between muscles and within one muscle.
To train maximum strength, you need to work with heavy weights that can be used for 1-3 reps. It is important for any athlete to know their maximum in basic exercises in order to choose the right load during training.
- Power. This is more interesting. Power is a combination of strength and speed. It is not just how much you can lift, but how quickly you can do it. Professor Bompa emphasizes that power is especially important in sports where there are time constraints, such as running, martial arts, baseball. To develop power, you need to train a quick manifestation of strength after the stage of training maximum strength. That is, first we build up the base, and then learn to use it quickly.
- Muscular endurance. This is about how long the muscles can work without fatigue. In almost any sport, endurance is important, and training should be aimed at developing both neural and metabolic factors. Here, Professor Bompa distinguishes four types of endurance:
- Strength endurance: 10-30 seconds of work with incomplete rest (as in interval training).
- Short muscular endurance: 30 seconds - 2 minutes of work (middle-distance running).
- Medium muscular endurance: 2-8 minutes of work (long-distance running).
- Long muscular endurance: more than 8 minutes of work (marathon).
Now, how to apply this in practice?
- Define your goals. What sport or activity is your priority?
- Analyze the requirements. What strength qualities do you need most?
- Create a training plan. Divide the training by strength type, not forgetting about the progression of the load.
- Monitor the body’s reaction. Make adjustments if necessary.
Conclusion: Professor Bompa makes us understand that strength is multifaceted and it is important to train its different aspects to become the best in your chosen sport. Approach training consciously and remember that the result is a combination of science and practice.
Force Time Curve
Let’s dive deeper into the “force time curve”. This is an important concept for understanding how force manifests itself in movement. As we’ve discussed, force is not just “how much”, but also “how fast”. This curve shows us how force increases over time and clearly demonstrates the different types of force we can develop.
So, if we look at this curve, we’ll see a few key points:
- Starting force. This is the initial phase, the first 50 milliseconds of the movement. It shows how quickly we can engage our muscles. Think of a sprinter starting from the blocks - this is where starting force manifests itself. It depends largely on intramuscular coordination, that is, on the brain’s ability to quickly engage the right number of muscle fibers at the beginning of the movement.
- How to train? Exercises that require rapid engagement (jumps in place, quick starts, exercises with minimal resistance).
- Explosive strength (or rate of force development). This is the next phase when we build strength after the starting impulse. It shows how quickly the force increases during the movement. Here, not only coordination plays a role, but also the ability of the muscles to generate energy - the faster, the higher the explosive force. Think of a barbell snatch, when you need to apply maximum force in a short time.
- How to train? Weight training exercises performed at the highest possible speed. Barbell tosses, clean and jerks, plyometrics.
- Power. This is a combination of starting and explosive strength. It shows how fast and hard we can perform a movement. Power is what is needed in most sports. Think of a boxer throwing a punch, or a basketball player jumping for a ball.
- How to train? Exercises that require fast and powerful movement, with resistance (sprinting, long/high jumps, medicine ball throws).
- Maximal strength. This is the highest point on the curve – the maximum force we can achieve. This is how much we can lift or push without worrying about speed.
- How to train? Exercises with heavy weights, performed slowly.
Now, how to use this in training?
- Identify the needs of your sport! What types of strength predominate?
- Train all phases of strength. Don’t focus on just one type.
- Use a variety of exercises! Alternate exercises for different types of strength.
- Remember about recovery! Give your muscles time to rest and recover.
Important point: It is not always necessary to develop all types of strength to the maximum. For example, there is no point in building explosive strength for a marathon runner. It is important to approach training individually and start from specific needs.
Understanding the strength-time curve helps you train more effectively and purposefully. Develop different types of strength, taking into account your needs, and then you can reach new heights.
Types of Strength by Muscle Activity:
- Concentric strength. This is the type that occurs when a muscle contracts and shortens, moving a joint. For example, when you curl a dumbbell for biceps - this is the concentric phase. It is concentric strength that is usually used to determine the “maximum strength” in an exercise. But, as a rule, a concentric action is preceded or followed by an eccentric action.
- How to train? Classic strength exercises aimed at overcoming resistance, for example: bench press, squats, pull-ups.
- Isometric strength. This is when the muscle tenses, but does not change its length. That is, you “hold” the force, and the joint remains motionless. For example, holding a plank or hanging from a bar are isometric exercises. Isometric strength is very important in many sports where you need to maintain balance and stability, such as BMX, sailing and combat sports. Interestingly, isometric strength can be 20% higher than concentric strength.
- How to train? Isometric holds in different positions, for example: holding a barbell on your shoulders in a squat, plank, holding a weight.
- Eccentric strength. This is when the muscle tenses, but at the same time lengthens under the action of an external force. For example, when you lower a dumbbell after a biceps curl, this is the eccentric phase. This type of strength is extremely important for sports that require jumping, running, and changing direction. Eccentric strength can be 40% higher than concentric strength.
- How to train? Slow negative repetitions in strength exercises, plyometrics (jumps with landing).
Now let’s talk about the ratio of strength to body weight:
- Absolute strength. This is the ability of muscles to develop maximum strength without taking into account the weight of the athlete. Absolute strength is important in sports that require lifting maximal weights or moving heavy objects, such as weightlifting or shot put. When an athlete strives to develop absolute strength, he increases not only his strength indicators, but also his muscle mass.
- How to train? Strength training with heavy weights and low repetitions, aimed at hypertrophy.
- Relative strength. This is the ratio between maximal strength and body mass. That is, how strong you are in relation to your weight. It is important in gymnastics, which requires lightness and strength, in martial arts, where there are weight categories, in sprinting, jumping, and in team sports, which require maneuverability. Neural adaptation is important for developing relative strength, not muscle mass gain.
- How to train? Strength training with medium to heavy weights and relatively low repetitions, with an emphasis on technique. Plyometric exercises, bodyweight exercises.
Now, how to apply this in practice?
- Determine your priority sport.
- Create a training plan.
- Monitor your strength to weight ratio, especially if relative strength is important to you.
- Adapt your training to your needs and progress.
Conclusion: Different types of muscle activity and strength to body weight ratio are important factors that affect the training process. Develop all the necessary types of strength, do not forget about weight, and then you will achieve maximum results. And we, as your reliable supplier of sports pharmacology AnabolShop.org, are always ready to help you become even better!
Good anabolism to all!
Author: Alex Morozov
Alex Morozov is a strength training analyst and fitness culture researcher with over 12 years of experience in powerlifting, bodybuilding methodology, and performance optimization. He has worked with competitive athletes, studied training physiology, and analyzed long-term health outcomes related to strength sports.
Alex focuses on evidence-based training, athlete longevity, and realistic performance expectations. His work explores the psychological and cultural factors shaping modern fitness trends, including social media influence, enhancement debates, and recovery science.
