The Breather Study
By Michael Yessis, Ph.D.


Breathing is the most “taken for granted” body function. Even in our modern age of physical fitness, breathing is hardly ever argued. In favour of, accentuation is allocated on the circulatory and muscular systems from the time they are considered and proved to be more important. The respiratory muscles, however, should be trained individually in the same manner as you work out other body muscles. By doing forced inhalation and exhalation using the Breather, these muscles can be worked out making breathing easier and more efficient. To breathe easier you may also together with Canadian Health&Care Mall utilizing the preparation for breathing sold there and shipped by this online pharmacy.


The main aim of this research was to investigate the opportunities for utilizing the Breather, SIE resistive training, in various “healthy” populations. (SIE Resistive Training, simultaneous inspiratory/expiratory resistive breathing training).

More particularly, the aims were to 1. Justify the efficiency of the Breather in growing expiratory and inspiratory capacity, – 2. Determine if there is a growing of strength, change in chest and waist size, improvement in the cardiovascular system, etc., – and 3. Define if SIE resistive training can be utilized daily, twice daily or every other day, i.e., to define what seems to be an efficient training regime.


Four groups, diverse in life style, were put together in this research. The first group was collected of athletes (individuals who took part in recreational sports, including body building). There were five sedentary people who concluded all the tests, three controls, seven athletes and three runners, for a total of 18 subjects.

The subjects were asked to utilize the Breather for three minutes in each session, four times per day, three days per week. This should be done for the first two weeks with weeks three and four utilizing the Breather three to five minutes each time, four times per day, five days per week.

The aspects were tried prior to beginning the test on the following items: forced vital capacity (FVC), forced expired volume in one second (FEV,), pulse rate before and after a standard aerobic step test, resting heart rate and then heart rate 15 seconds immediately after work, chest and waist circumference and hand dynamometer. There was also an aerobic training including of how long distance the subjects could come through in 12 minutes.


There was a positive growing in the before and after test in almost all characteristics tested. Regardly to chest circumference, 45% of the subjects registered a growing ranging from 1/4 to 2 1/2 inches. Six out of ten of the active athletes and runners enhanced the chest circumference. This growing was especially observed in runners.

In regard to waist circumference, almost 40% of the aspects registered a reduction in waist size. The reduction varied anywhere from 1/2 to 2 inches. Ten of the aspects registered no change; but it was not one-of-a-kind for any one population.

Before and after hand dynamometer trying (average of three tries) registered that 70% of the aspects grew in hand strength. The quantity of increase varied anywhere from two to ten pounds. Three subjects registered no change while two showed a slight reduction.

Resting pulse rate, before and after the test, register that there was a reduction in 42% of the subjects. It ranged from 3 to 18 beats per minute drop. Only one subject practiced an growing and it was one of the controls, while two runners registered no change.

Pulmonary function studies remarked a 5% to 18% enhancement in the FEV, and 11% enhancement in the FVC.

In distance covered, 86% of the subjects remarked a growing in the distance they were able to come through in 12 minutes. The growing varied from 50 to 700 yards. One subject registered a slight reduction while another remarked no change.


From the outcomes of this research, it turns out that utilizing the Breather, SIE resistive training was instrumental in providing shifts in both the breathing mechanism and possibly in restoration and circulation. For example, it has been well identified that the strength amount can be produced by a person is in relation with the type of breathing being done. During breath holding the greatest amount of strength can be performed. Since the majority of the subjects registered a growing in hand strength from utilizing the Breather, it marks that the muscles got involved in breathing, as well as the air amount held in breathing, are functional of producing more strength.

The reduction in waist circumference can also be interpreted by the forced expiration done on the Breather. It has been well proved that the abdominal muscles, especially the transversus abdominis, take the first place in expiration. In this regard, it should be observed that the transversus abdominis is important only in forced expiration. This is its only function. Thus, by doing forced expiration, there was most likely evolution of the abdominal muscles, which performed a smaller waist size.

In regard to chest circumference, most of the active subjects showed an increase in chest size. This can be explained by the greater amount of inhalation that the subjects were doing together with improvement of the intercostal muscles and possibly the levator scapule and upper trapezium to help expand and elevate the thoracic chest cage. In addition, there was probably development of the diaphragm in its downward pulling action. It is also possible that the chest circumference may have increased due to greater expansion of the lungs or thoracic cavity.

In regard to resting pulse rate, there was greater uncertainty in regard to pre and post testing in the resting state. Here, eight reduced, six registered no change, while four grew. This can be assigned by some of the subjects being in a various mental state when being tested at various times of day. However, the most important was the greater amount of subjects who reduced their heart rate after the training. This can be considered to be even more significant than merely changing the resting pulse. A greater reduction in the heart rate after a standard training is indicative of higher fitness levels.

That there was an enhancement in the cardio respiratory system was also identified by the growing in the distance that the subjects were able to come through in 12 minutes. A 12 minute run is mostly aerobic and to exhibit a growing of such measurements in this time amount, when their life styles did not alert during the research time, identifies that SIE resistive training played a major role.

Upon the part of Dr. Lester Lee’s research on the Breather, he began that “the preliminary objective data is quite impressive.” He understood that a huge variety of applications with the Breather on post operative patients being necessary for incentive spirometry, patients with lung disorders, as well as the athletes having a desire to improve and facilitate their breathing effectiveness and performance could be reached.

Michael Yessis, Ph.D.

Breather study conducted in June-July, 1990 by Michael Yessis, PhD, international authority on sports medicine and training and columnist for Muscle & Fitness and Lester L. Lee, M.D., American College of Sports Medicine.

PN Medical manufactures the Breather