Maximum strength is the key to increasing sports performance, body image and life expectancy. MYOFX maxforce allows you to measure, train and develop maximum strength. It is a fun and very effective training to tone your entire body in just 5 minutes a day. Based on game theory, Maxforce allows people of all ages and fitness levels to enjoy the great health and aesthetic benefits of muscle toning. Designed to work independently or in combination with other training systems.



Increase muscle tone

Increase maximum force

Improves circulation

Combat sedentary lifestyle

Stimulates the production of regenerative hormones

Based on scientific studies, continuous training with the MYOFX MAXFORCE raises the levels of health and life expectancy.


A fun workout that suits your style. You can customize both the MAXFORCE and the app with different colors and styles.


With our Android or IOS app you can register the results of your workouts and share them on your social networks.

With the MAXFORCE you can also compete with your groups of friends or with anyone you choose from the rest of the world. In the ranking function you can see your position locally, country or globally.


1) What is maximum force measurement and training used for?

Isometric measurement is used both to determine the current state of muscle fitness and to document strength gains. It is the barometer with which any type of training is compared. McGlynn in his mega-analysis commented that “There is more than enough evidence that isometric exercise improves maximum strength”

The use of isometric exercise has a long history, is used in rehabilitation to recover strength and muscle tone and is part of training and preparation for gymnasts, dancers and strength competitors. Bodybuilders achieve greater hypertrophy by training isometric poses. It is also used to evaluate and improve the level of fitness, quality and effectiveness of other types of training, strength levels, hypertrophy and even to calculate the general health status and life expectancy.

2) How much time do I need to do the strength test with the maxforce?
The tests are quick and very easy to perform. There are several tests that last between 2 and 5 minutes. You can visualize the results graphically on any smartphone or tablet and share it online in your preferred social networks. The tests are performed to establish the initial strength level, document progress and compete with any user that accepts the challenge. It provides a regional, national and international ranking according to parameters of sex, age and weight category.
3) How long do the workouts last with the maxforce?
There are several types of training for different muscle groups that can last between 6 and 10 minutes and can be distributed during the day in blocks of 2 minutes. We suggest 3 workouts per week to achieve increases in strength and once a week to maintain it. To maximize the result we recommend combining training with supplementation “myoFX muscle plus” and complementary training with myofx ems system since the studies * have shown their effectiveness increasing the results up to 50%. There is no longer any excuse to obtain a stronger and healthy toned body.

4) How can maxforce estimate life expectancy?
Strength has a direct relationship with muscle mass and muscle a direct relationship with health. The muscle is the organ with greater volume in a healthy person, it is 50% of the total weight, therefore its care and conservation is of maximum importance for health, well-being. The increase in muscle tone should be your priority when selecting any type of training, diet or supplementation.

With age and a sedentary life, up to 1% of muscle mass is lost every year. Maintaining and / or increasing muscle mass is scientifically proven to directly help the body fight and prevent diseases such as diabetes, obesity, Alzheimer’s, Parkinson’s, fibromyalgia, dementia and even many types of cancer.

In addition, the muscle controls the level of sugar in the blood, stores essential amino acids to regenerate cells, burn calories and control weight, therefore helping to increase life expectancy.

In conclusion, we started to get old when we started losing muscle mass.

5) Why is the maxforce better than a simple handheld dynamometer?

A hand dynamometer measures the strength of the grip of the hand, is certified as an instrument to assess maximum force directly and estimate muscle mass and life expectancy indirectly, until here is very similar to the function of the maxforce. The drawback is that it only measures one muscle group (the wrist flexors), and in the case of older people with arthritis or poor mobility that measurement in the hand may not be proportional to the actual strength, and consequently, the true level of muscle mass and the health of the subject.

The maxforce instead rapidly measures the 10 major muscle groups giving a more accurate and comprehensive estimate of the strength and health of each individual.

6) Can it be used with people with movement limitations or diseases that weaken muscle function?
Yes, several studies have shown that work of greater intensity is more effective, for example in a study with patients with rheumatism had better results in achieving strength increases. At the same time it did not affect his illness compared to a program of less intense but longer-lasting exercises.
7) I've heard that strength gains are only acquired by training at a specific angle. Is that true?
It is a very common doubt, once a study was made that mediates the isometric strength in the weakest position (starting) compared to exercise with the whole movement path and greater resistance. Obviously the exercise with greater resistance had better results. That’s where this myth comes from. Reality and sports science demonstrate just the opposite. Bandy and Hanten showed that when you train isometrically in the angle of maximum leverage you can use greater resistances than when you use full-travel exercises. With the isometric exercise using the optimal angle there is less joint load, faster results and less training time. The results showed gains in maximum strength and muscle tone, achieving greater strength at all angles of travel.
8) Why is not maximum strength training so well known?
Isometric exercise is very easy to perform because you can use any surface even your own body to train. Until now the problem was how to measure the effort (easy with a dumbbell). So creating training programs that require resistance progressions was much more complicated. However, now with maxforce it is very easy to measure your strength, while you train your whole body and most importantly, document your progress or in the case of being a health professional and / or sport controlling the initial state, the progressions of your customers Also maxforce allows you to control that they comply with their workouts at home.
9) Can you gain strength and hypertrophy (muscle toning) with the maxforce?
Of course, the strength and the amount of muscle mass are united. There are extensive studies for more than 50 years that demonstrate the great effectiveness of isometric exercises to develop strength and muscle tone. Studies conducted by H. Kanehisa1 and M. Miyashita showed maximum strength improvements of 27% -36% and potential of 37% -46% in only 8 weeks.
10) Why am I interested in gaining muscle mass?
Maintaining physical strength allows for independence and a healthy body image, strength has a direct relationship with the muscle mass that a person has, and the muscle has a direct relationship with health and life expectancy. The muscle is the organ with the highest volume in a healthy person, it accounts for 50% of the total weight, therefore its care and conservation is of the utmost importance to maintain health and vitality at any age.

With the advance of the years and a sedentary life, up to 1% of muscle mass is lost every year. The muscle with respect to health enables the body to prevent diseases such as diabetes, obesity, Alzheimer’s, Parkinson’s, fibromyalgia, dementia, etc. A daily pill of myoFX regen plus can increase muscle tone up to 5%, adding to the effects of physical activity and providing a significant result in health and image results.

11) Can I train more body parts with the maxforce?
Of course, you can train the whole body, within the pre-established programs you can learn how to train all the main muscle groups of the body. We have more than 50 exercises that train pectorals, arms, legs, back, shoulders, glutes, and every day our users discover new exercises to perform with the maxforce, which they share in our social networks.
12) What is an isometric exercise?
Isometrics are one of four types of muscle contraction validated to increase strength and improve muscle tone. These are:

1) The concentric voluntary contractions where you overcome a resistance like raising a dumbbell, during this type of exercise the muscle is tensed while the working angle is shortened. (Fig. 1) The disadvantage is the lack of initial leverage and the usual attempt to exercise with full movement travel requires working with sub-optimal loads and perform many series, repetitions and multiple weekly sessions to achieve results.

2) The eccentric contractions where the weight overcomes the strength of the muscle, for example when a heavy dumbbell causes the arm to give in spite of the effort to maintain it. In this case the muscle stretches under tension. (Fig. 3) The disadvantage is that as it depends on the effort and speed it is difficult to estimate the real effort. It can also suppose a joint overload in start and end positions of the exercise. It can cause excessive muscle damage and inflammation of the tendons.

3) Voluntary / involuntary involuntary or combined contractions caused by electrostimulation, where an EMS device directly stimulates the muscle alone or in combination with a voluntary effort that shortens the muscle (concentric contraction) and / or stretches the eccentric or tense contraction muscle by a Isometric contraction.

4) Isometric contractions (Figure 2) produce a muscular tension while the working angle does not vary against an immovable resistance. The fibers by nature of any shrinkage by definition are shortened. Several studies (Fig. 4) show that isometric exercise is more effective in improving strength levels compared to other types of muscle exercise.

Each of them can stimulate increases in strength and muscle tone. It has its advantages and disadvantages according to each person and their objectives. By nature, different types of contractions are combined in each training.

13) What type of muscle contraction is the best to develop strength?

Each of them has certain advantages over the others according to the objective. If it is used optimally at maximum lever angles, the isometric allows to work at higher load and intensity. In this position, the muscle is able to generate maximum strength, so despite working more intensively there is less joint load and less risk of injury.

When we work with greater intensity it is not necessary to perform so many repetitions and / or series, so we reduce the time necessary for each training. We can say that isometrics are the most intelligent, effective training system with result, effort and progress with greater measurement accuracy when it comes to increasing strength. (Fig. 4)

14) How is it possible to work with greater resistance with isometric exercises than with weights?

The muscle has more or less force depending on the angle of your joint. We have as an example the “Curl” of biceps (arm flexion), comparing an isometric repetition with a concentric repetition raising a dumbbell.

When we use a dumbbell the weight we lift is limited by our strength in the starting position (Fig 3) which can be around 2-4 kilos. This amount is not enough to achieve improvements in strength and muscle tone, therefore the user is obliged to overcome this initial inertia using other muscles such as the back, trunk and even the legs to be able to lift more weight. The biceps (the objective of the exercise) works in a limited way both in the level of muscular tension and in the time under tension.

By creating “moment” (weight in movement) the weight passes the zone of maximum leverage without working the biceps (the object of the exercise). When the weight is lowered the biceps works in the last part of the stroke eccentrically (Figure 3), the disadvantage is that the muscle is very stretched, therefore, the load on the tendons and joints is very large. The muscle is outside the area of optimal lever angle, and therefore, it is well below its area of maximum isometric strength, which should be the goal of each exercise. (Fig. 2).

However, when we perform a biceps exercise in that area between 80 and 120 degrees (depending on the person) we can work at a higher intensity with less joint load. Studies show that the maximum force gain is applicable over the entire travel path.

15) The bodybuilder does achieve dumbbell hypertrophy, how does he do it?

If you use the full stroke movement you have to raise the dumbbell with momentum using the rest of the body, that is the only way that allows you to lift much more weight than your starting force without impulse.

If you lift a very large weight gravity slows the “moment” (moving weight) therefore the biceps does work during the concentric phase. At the end of the movement, it usually performs a maximum isometric contraction by tensing the muscles voluntarily. By lowering the weight works eccentrically. Obviously achieve greater gains in strength and hypertrophy than a person raising less weight without using momentum at startup. The disadvantage of using high loads during the complete movement is that although it achieves results of strength gain and hypertrophy, the high joint load that it suffers can cause over-training, excessive fatigue and inflammation of the tendons. This can cause pain, force training to stop and / or take anti-inflammatories, which is very common.

To avoid this problem, professional bodybuilders decide to train with partial movements (movements of little distance, between 3-5 cm) with a lot of weight, working exclusively in the area of ​​maximum leverage and with fewer repetitions. Massey et al in their study confirm this hypothesis that partial exercises are at least as effective with the same load as exercises performed throughout the range of motion using the same load. Logically “the partial” are more effective because they allow the use of greater maximum muscle load with less joint load than the exercises of complete travel. By intuition, experience and results the bodybuilder ends up approaching a maximum isometric contraction.

16) I'm a woman, I do not want to gain too much muscle, can I train with the maxforce?

Muscle mass gains are very important for all people because they improve sports performance, health and life expectancy. In the physical aspect a toned body implies a significant amount of muscular mass, the muscle is a very dense tissue, it occupies less volume than the fat therefore it is essential for a slender figure. The toning that everyone wants is actually a moderate muscle hypertrophy, therefore, should be the goal when looking for a type of training, diet or supplementation. However the female body by hormonal aspects (low testosterone production) compared to man hinders the excessive increase of muscle mass, this fear is unfounded.

When you improve muscle tone you stimulate the reduction of fat, you can have up to 2 sizes less and a much slender figure even with the same weight. The problem to get the ideal figure is not to gain too much muscle if you do not have high levels of fat and little muscle tone. The muscle for being an active tissue increases the metabolism by burning fat even at rest.

In the case of obtaining an excessive level of toning (unlikely thing) the solution is very easy to simply train less, using a maintenance program that reduces the number of repetitions, series, time (volume) and frequency (number of sessions per week) ) of the trainings. Hettinger and Muller in their extensive studies with isometric exercises and their relationship with maximum strength showed that muscle tone and strength is maintained with a single repetition of 65% of the maximum force performed for 10 seconds once every two weeks.

17) Will achieving greater strength improve my resistance?

The mathematical formula of the resistance speaks for itself, the Resistance is The Force over time F / T, therefore greater maximum force provides greater capacity of resistance. Training with the maxforce by lengthening the sub-maximal contraction time also improves muscular endurance, hence the only way to improve VO2 max capacity. in trained athletes is performing high-intensity interval exercise (HIIT). At the level of sporting performance of any kind, having greater maximum strength is always an advantage, never a disadvantage.

18) Why is maxforce so effective in improving strength and muscle tone in maximum strength training?

Apart from the adaptation of the effort that occurs with each type of exercise there are four very specific elements with the exercise of maximum strength:

1) Occlusion: Scientific studies show that from 65% of maximal isometric strength there is a partial occlusion of the circulation. Exercises with occlusion produce better results in strength and muscle hypertrophy than the same exercise without this effect.

2) Intensity: When working with greater intensity and resistance there is greater recruitment of muscle fibers, especially the fast fibers that are essential to gain strength and muscle toning.

3) Documented systematic progression: Isometric exercise can achieve better results by working scientifically evaluating and adapting the load with each training. Petrow and Siebert almost 100 years ago were the first to demonstrate that gains in hypertrophy and strength occur when the muscle is subjected to a higher level of work (load).

4) Maximum lever: During isometric work there is greater tension on the muscle and more time of effort in the area of ​​maximum leverage ( Power Zone .) According to Royce  the increase in work intensity is the determining factor to achieve improvements in optimal strength.

19) Is not it advisable to train to complete muscular fatigue to achieve improvements in strength?

Folio. Irish et alin their study they showed that fatigue was not essential for improvements in strength, they could be achieved without the danger of over-training. The confusion comes from the concept of muscle fiber recruitment. When working at a lower intensity, many series and repetitions are required in order to obtain results precisely because fast fibers (the main objective of strength and hypertrophy) will only begin to act when intermediate and slow fibers are fatigued, therefore, conventional training is required to get to fatigue to get results. On the other hand, when we train the maximum force, these fibers work immediately, therefore, it is not necessary to do as many series and repetitions as when training with less load. With maxforce we save training time by increasing intensity.

20) Is there danger of shortening my muscles doing strength exercises?
The muscles can not be shortened by exercise because their inserts are fixed, they can not be disconnected from the bone and re-inserted in a shorter position. There may be limitations in range of motion if there is a muscular decompensation, for example when only the biceps is trained and not the triceps.

This is really a myth that science denies. Thrash et al and Barbarosa et al  in their studies showed that strength work could improve joint flexibility even without stretching. Athletes who practice strength sports have a degree of flexibility equal to or greater than the general public and do not lose it over time.

21) At what intensity should I train with the maxforce?

Hettinger and Muller showed that training less than 30% of maximum isometric force (FIM) has no benefit. And climbing more than 80% did not have much benefit. Stuart and Graham recommend a minimum of 60% of the (FIM), as the occlusion starts from 65% it would be advisable to work between 65% and 80% to obtain excellent results and maintain safety, reducing the risk of injury and over -Training during the exercise. Using a Borg scale 1 to 10, with 10 being the maximum effort and 1 the minimum, performing a progressive training with a warm up followed by an initial effort of 3, one to 6 and one to 8 for 4 to 10 seconds for each effort.

22) How does training affect blood pressure?

According to studies, isometric training lowers blood pressure in people with hypertension. Like any high-intensity exercise it is important to maintain natural breathing (not holding your breath during exertion) especially with people with hypertension. The blood pressure will rise during training and will decrease after each session.

23) What should we take into account when working with the isometric exercise?
  1. Follow the instructions for use to measure, train and play safely.
  2. First we need to determine the current strength of each person prior to designing a training program. That’s easy with the questionnaire and initial test.
  3. We need to establish the objectives and goals of the training. We have verified that when there are concrete objectives there are better results than when they are not established in advance. A 30% improvement in maximum force in 90 days is an achievable and motivating goal.
  4. It is essential to use graphics (Smart Graphs) to demonstrate progress and to adjust the training according to the evolution of each person.
  5. Keep in mind that as we progress in our training with maxforce the rate of gain in strength decreases in part because maximum hypertrophy is limited by our genetics and processes such as myostatin, but you can still make progress in muscle strength and endurance. That’s why we recommend supplementing your exercise program with “myoFX muscle plus” that optimizes work with maxforce. When we reach our maximum potential strength the improvements will be more challenging but less significant. For an elite athlete an improvement of only 2% can mean the difference between winning a medal or not.

1. HETTINGER, T. and MULLER, EA Muskelleistung und Muskeltraining. Internationale Zeitschrift fur angewandte Physiologie einschliesslich Arbeitsphysiologie, 5: 1 11-126, 1953

2. HETTINGER, T. Der Einfluss der Muskeldurchblutung beim Muskeltraining auf den Trainingserfolg Internationale Zeitschrift fur angewandte Physiologie einschliesslich Arbeitsphysiologie, 16: 95-98, 1955

3. HETTINGER, T. Die Trainierbakeit menschlicher Museln in Abhangigkeit vom Alter und Geschlecht. Internationale Zeitschrift fur angewandte Physiologie einschliesslich Arbeitsphysiologie, 17: 371-77, 1958

4. KROLL, Walter. Isometric fatigue curves under varied intertrial recovery periods. Research Quarterly, 39: 106-15, 1968

5. MULLER, EA and ROHMERT, W. Die Geschwindigkeit der Muskelkraftzunahme bei isometrischem Training. Internationale Zeitschrift fur angewandte Physiologie einschliesslich Arbeitsphysiologie, 19: 403-19, 1963

6. PETOW, H. and SIEBERT, W. Studien uber Arbeitshypertrophie des Muskels. Zeitschrift Klin. Med., 102: 427-433, 1925

7. ROBSON , H. Evans. Weight training injuries among some competitors at the 6th Empire and Commonwealth Games, Cardiff, 1958. Proceedings of Symposium on the risks of weight training and lifting in young people. British Journal of Sports Medicine, 5: 58-59, 1970

8. ROYCE, Joseph. Isometric fatigue in human muscle with normal and occluded circulation. Research Quarterly, 29: 204-217, 1958

9. START, KB and GRAHAM, JS Relationship between the relative and absolute isometric endurance of an isolated muscle group. Research Quarterly, 35: 194-204, 1964

10. It has also been shown that high-intensity exercise does not alter blood pressure or cause blood pressure elevation.55. Roman O, Camuzzi AL, Villalon E, et al. Physical training programs inarterial hypertension: a long-term prospective follow-up. Cardiology. 1981; 67: 230-243.

11. Changes in Torque and Electromyographic Activity of the Quadriceps Femoris Muscles Following Isometric Training PHYS THER
Vol. 73, No. 7, July 1993, p. 455-465 William D Bandy and William P Hanten


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