Method and device for respiratory training and calibration

Abstract

A computer-implemented respiratory training method comprising the following steps: - obtaining a representative signal of a user's breathing from a respiratory measurement module, - first measurement, during a first time interval, from said signal, of a breathing parameter of said user, - first presentation to said user, on an interface module, during said first time interval, of an animation synchronized with said first measurement, - second presentation to said user, on said interface module, during a second time interval, following said first time interval, of said animation synchronized with a target breathing parameter value, - second measurement, during said second time interval, from said signal, of said user's breathing parameter, - comparison of said second measurement with said target breathing parameter value.and - recording of said second measurement, based on a result of said comparison. Without an abbreviation figure,

Description

Title of the invention: Method and device for respiratory training and calibration technical field

[0001] The present invention relates to the field of assisting in improving cardiorespiratory coherence in the management of stress and emotions of users.

[0002] The invention relates in particular to the training of users to improve and achieve this state of cardio-respiratory coherence.

[0003] The invention has applications, particularly in managing the stress and emotions of users before undergoing medical examinations or treatments. Technological background

[0004] Every year, millions of new cases of cancer are reported. It is estimated that 35% of these cases will require radiotherapy. This is particularly true for thoracoabdominal cancers (breast, lung, liver, pancreas), of which it is estimated that more than 2 million new cases occur worldwide.

[0005] For more than 25 years, the various players in Medical Imaging and Radiotherapy (cancer treatment by irradiation) have been seeking solutions to control the movements of tumor masses (in English: "motion management" / "moving targets") induced by the respiration of patients treated with radiotherapy (cancer treatment by irradiation).

[0006] When a patient undergoes a CT scan or radiotherapy treatment, they lie on an examination table. Despite all existing body immobilization techniques (positioning tables and lasers, masks, restraints, etc.), the patient continues to breathe, which causes more or less significant movement of the tumor, particularly when it is located in the thoracoabdominal region (lung, breast, liver, pancreatic cancers, etc.). This movement of the tumor mass disrupts the quality of the imaging and increases the risk of irradiation of healthy tissues and vital organs located near the target (tumor).

[0007] To optimize the management of these movements, several methods and techniques have been developed since the beginning of the 2000s.

[0008] One can cite for example the free breathing method: during imaging and treatment sessions, the patient breathes normally and medical devices synchronized with scanners and particle accelerators make it possible to determine the best times to capture images and trigger the radiation beams (for example 4D-CT in retrospective or prospective mode).

[0009] Another method is the apnea technique: to ensure reproducible positioning of the tumor mass to be treated, as well as its immobilization, the patient is asked to hold their breath, always at the same level of inspiration or expiration. Image capture and radiation beams are then triggered when the patient reaches and maintains the correct level of apnea (previously defined by the medical team).

[0010] Although they have led to progress over the past 20 years, the various techniques used to monitor the movement of thoracoabdominal tumors (surface measurements using cameras, respiratory measurements using spirometers, resistance measurements using abdominal belts and strain gauges, etc.) vary in their accuracy and suitability for different types of treatment. Furthermore, they are not always synchronized with imaging and irradiation equipment and vary in their ergonomics.

[0011] Furthermore, their use is time-consuming (patient preparation, system setup and quality control, session interruptions and restarts following alerts, etc.). All of this limits their use to certain categories of patients, too often selected by the medical team based on the perceived benefit of the technique combined with the center's capacity to absorb this additional time.

[0012] Thus, the control of internal movements induced by metabolic respiration in humans is not yet optimally addressed. Furthermore, it is limited to certain patients due to a lack of resources (facilities, equipment, personnel, etc.). This considerably limits the time that can be devoted to each patient treated for mobile tumors ("moving targets").

[0013] The present invention falls within this framework. Summary of the invention

[0014] According to a first aspect, the invention relates to a computer-implemented respiratory training method, comprising the following steps:

[0015] - obtaining a signal representative of a user's breathing, originating from a respiratory measurement module

[0016] - first measurement, during a first time interval, from said signal, of a breathing parameter of said user

[0017] - first presentation (304) user audit, on an interface module, during said first time interval, of an animation synchronized to said first measure,

[0018] - second presentation to said user, on said interface module, during a second time interval, consecutive to said first time interval, of said animation synchronized to a target breathing parameter value,

[0019] - second measurement, during said second time interval, from said signal, said user breathing parameter,

[0020] - comparison of said second measurement with said parameter value of Targeted breathing, and

[0021] - recording of said second measurement, based on a result of said comparison.

[0022] For example, the steps preceding said recording are repeated according to a repetition criterion.

[0023] The repetition criterion is, for example, a difference between said second measurement and said target breathing parameter value greater than a first target performance value of between 2.5% and 7.5% in absolute value.

[0024] Before repeating said first measure, a soothing support may be presented via said interface module.

[0025] For example, said presentation of said soothing support is achieved when a difference between said second measurement and said target breathing parameter value is greater than a second target performance value of between 15% and 25% in absolute value.

[0026] For example, before repeating said second measure, the presentation of a soothing support via said interface module.

[0027] For example, the said presentation of the said soothing support is carried out when a difference between the said second measurement and the said target breathing parameter value is between a first target performance value and a second target performance value, the first target performance value being between 2.5% and 7.5% in absolute value and the second target performance value being between 15% and 25% in absolute value.

[0028] At least one of said thresholds can be updated between two repetitions of said steps preceding said recording.

[0029] For example, said target breathing parameter is a function of said user's breathing cycle in inspiration and expiration time.

[0030] For example, the said breathing parameter is a function of an inspiration and / or expiration time.

[0031] According to a second aspect, the invention relates to a device for implementing a process according to the first aspect.

[0032] According to a third aspect, the invention relates to a system for implementing a method according to the first aspect. Brief description of the figures

[0033] Other features and advantages of the invention will become apparent from the following detailed description, by way of non-limiting example, and the accompanying figures, among which:

[0034] [Fig-1] illustrates a system according to embodiments,

[0035] [Fig.2] illustrates a respiratory measurement module according to embodiments,

[0036] [Fig.3] illustrates a process according to embodiments,

[0037] [Fig.4] illustrates an animation according to embodiments,

[0038] [Fig.5] illustrates a training device according to embodiments. Detailed description of the invention

[0039] Before presenting in detail the embodiments of the invention, the example of the context of use in the medical field is first recalled.

[0040] Human respiration is a spontaneous and natural physiological phenomenon, carried out without conscious thought (Autonomic Nervous System). Its primary function is the oxygenation of the blood (gas exchange with the surrounding air), and each of us breathes daily by inhaling and exhaling the volumes of air necessary for this proper oxygenation. The need for oxygen naturally varies depending on the situations and efforts we are subjected to throughout the day (resulting in greater or lesser oxygen consumption), with the greatest oxygen consumption coming from physical activity.

[0041] Our sleep onset phase is a good example for better understanding this mechanism. We are comfortably lying down, and if we are not disturbed by external events (noise, television, worries, etc.), we breathe at a perfectly stable cardiorespiratory rate and are calm. After each inhalation, we exhale slowly to our baseline respiratory rate before spontaneously taking another breath. Our heart also beats at a stable rate, our oxygen needs are constantly met, and after a few respiratory cycles (inhalation-exhalation), we are breathing in a perfectly calm and reproducible manner.

[0042] Then when we wake up, and start to become active, our body will gradually but always spontaneously adapt (Autonomic and Somatic Nervous Systems) our breathing or "tidal volume" (volume of air needed to ensure a good level of oxygenation and gas exchange) according to our physical activity and the various elements we may be confronted with (discussions, noise, stress, fear, laughter, anxiety...), these phenomena all being oxygen-consuming.

[0043] Patients suffering from cancer are subjected daily to intense periods of fatigue (often linked to chemotherapy in particular), but also to anxiety, Pain, stress, low morale, or other factors automatically affect their current tidal volume. Therefore, this volume will not be linearly consistent throughout the day, which is true for every human being, whether or not they are being treated for cancer.

[0044] All these respiratory variations therefore have consequences (difficult to anticipate) on the movements and positioning of the tumor masses to be treated (thoraco-abdominal cancers), which considerably complicates matters and therefore limits the benefits of the respiratory control solutions currently used for this type of treatment.

[0045] One objective of the embodiments is to enable the patient to breathe in a stable and consistently reproducible manner (in volume and flow rate and / or phase and amplitude), in order to optimize the use of all existing technical solutions for controlling internal movements.

[0046] Thus, the embodiments described below allow the patient to be trained (or "calibrated") by providing them with an automatic tool for controlling their breathing (and therefore their heart rate). This allows them to implement a daily training regimen based on their cognitive abilities, enabling them to better manage their stress and emotions by achieving a balanced and personalized cardiorespiratory state, into which they will be "re-immersed" during each imaging and treatment session.

[0047] Of course, these embodiments can be used in other contexts. Thus, any user wishing to implement respiratory training can use the technical tool as described below. This can involve training aimed at reducing stress in a medical / therapeutic context, but also in other contexts (personal, professional, etc.). It can also involve training aimed at improving physical and / or athletic performance.

[0048] Indeed, practicing heart coherence offers numerous benefits, both in the short and long term. It is therefore a means of improving the quality of life and well-being of those who practice it. Among the beneficial effects are: - Increased amplitude of heart rate variability - Rounding and regularity of the respiratory curve - Calming - Decrease in cortisol, the main defense hormone secreted during stress. - Increase in DHEA, the youth hormone that slows down aging. - Increase in salivary IgA which participates in immune defense. - Increase in oxytocin, a neurotransmitter that promotes attachment (also called the "love hormone"). - Increase in atrial natriuretic factor, a hormone secreted by the heart that acts on high blood pressure. - Increase in alpha waves which promote memory, learning, but also communication and coordination. - Beneficial action on many neurotransmitters (hormones that carry emotions) including dopamine (pleasure) and serotonin (prevention of depression and anxiety). - Reduction of high blood pressure - Reduction of cardiovascular risk - Regulation of blood sugar levels - Reduction of abdominal circumference - Better recovery - Improved concentration and memory - Reduction in attention deficit hyperactivity disorder (ADHD) - Improved pain tolerance - Improvement of asthma - Improvement of inflammatory diseases

[0049] The embodiments focus on the technical tool offered for setting up any respiratory training.

[0050] Fig. 1 illustrates a system according to embodiments.

[0051] The system includes a respiratory training device 101. This device may, for example, take the form of a smartphone on which a dedicated application allows the implementation of a process according to various embodiments. For this purpose, the device includes a processing unit configured for this purpose and any other necessary modules as described below with reference to [Fig. 5]. An interface module 102 is also present for interaction with the user. For example, the interface module includes a screen. For example, the interface module includes means for emitting sounds. The device 101 is configured to communicate with a respiratory measurement device 103. For example, the communication may be wireless. For example, the communication may be via Bluetooth®.For the purpose of saving the data collected and / or calculated by device 101, the device may communicate with a remote server 104. For example, communication may occur via a network (or a cloud) 105. Communication may, for example, be wireless. For example, the network is the internet. Communication with the server may also serve other functions, by. example, updating user data and / or updating the application being used.

[0052] Figure [Fig.2] illustrates in more detail the structure of a respiratory measurement module according to embodiments.

[0053] The module is presented in three states, "0", "1", and "2". State 0 is a state without detection of airflow (preparatory phase, transient phase, or apnea phase). State 1 is a state in which the user inhales. State 2 is a state in which the user exhales.

[0054] The module includes a breathing mouthpiece 201 intended to be placed in the user's mouth and through which the user will breathe in order to carry out a process as described below. The mouthpiece is, for example, a detachable mouthpiece to allow for cleaning or replacement.

[0055] The nozzle 201 is connected to a body 202. The body has an air circulation channel 203 between an air inlet on the nozzle side and an air outlet on a face opposite the nozzle. It also houses a processing unit 204 for performing various functions. This processing unit can, in particular, collect data from sensors 205, 206. Each sensor is associated with a valve 207, 208 respectively.

[0056] Valve 207 allows the user to exhale air in one direction only, from the air inlet to the air outlet (state 2). When valve 207 is open, valve 208 is closed. Valve 208 allows the user to inhale air in one direction only, from the air outlet to the air inlet (state 1). When valve 208 is open, valve 207 is closed. Each sensor can determine the open state of its associated valve and communicate this information to the processing unit.

[0057] The respiratory measurement module can also be associated with a unit for measuring inspired or expired airflow (or air volume). This unit can be integrated into the respiratory measurement module. Alternatively, this unit can be separate and connect to the module and communicate with the processing unit or directly with the training device. For example, it could be a spirometer. Other types of measurement units can be associated with the respiratory measurement module, such as surface cameras, abdominal belts, or others.

[0058] The processing unit can thus determine a number of parameters such as, for example, the user's breathing phase (inspiratory or expiratory), respiratory rate, inspiration / expiration time, etc. The volume and / or flow rate of inhaled / exhaled air can also be determined. Other parameters can be measured or calculated, such as: - the minimum inspiration time, - the maximum inspiration time, - the number of inspiration phases, - the average duration of inspiratory phases, - the minimum expiratory time, - the maximum expiration time, - the number of expiration phases, - the average duration of the expiratory phases, - the duration of the minimum respiratory cycle, - the duration of the maximum respiratory cycle, - the number of respiratory cycles, - the average duration of respiratory cycles, - the mean tidal volume Vt (volume of air moved during calm breathing),

[0059] The processing unit can also communicate these parameters to the drive device.

[0060] A training method according to embodiments is described below with reference to [Fig. 3]. This method can be used in a more general patient preparation program for medical examinations such as, for example, radiotherapy treatments as explained above. Other applications are possible.

[0061] This training aims to prepare the user, through a stimulation program via an interface module and a respiratory measurement module, to adopt a target breathing pattern. For example, this target breathing pattern corresponds to maximal resting respiration in which breathing variations are reduced to a minimum, which can facilitate the proper execution of certain medical examinations or treatments (such as imaging, radiotherapy, biopsy, surgery with local anesthesia, or other procedures), as explained above. At the end of a training session, breathing parameters can be recorded to synchronize an incentive animation that will be presented to the user during their daily training sessions, and of course during their medical examination or treatment, thus allowing them to reproduce the target breathing pattern they learned during the training, for example, for the purposes of a medical examination preparation program.

[0062] In other words, the user can repeat a breathing exercise in such a way as to internalize a target breathing pattern, which they will then associate with a given animation synchronized to this target breathing pattern. This is referred to as "patient respiratory calibration" associated with the clinical objectives of the medical team. The parameters of this target breathing pattern can be recorded to reproduce the animation in the future, with the same synchronization. In the presence of this synchronized animation, The user will be able to find the target breathing pattern that they have learned to associate with the animation.

[0063] In a first step 301, the user configures the training device according to, for example, visual and auditory preferences for the animations and materials that will be presented during training. They then place the respiratory measurement module in their mouth. Instructions can be given to them via the interface module. Messages that can be displayed, for example, allow them to begin interacting with the application while already breathing through the module. The user can then place themselves in conditions as close as possible to the intended objective. For example, they can assume a position similar to that of the medical examination or treatment they will have to undergo, wear specific equipment, or other such conditions.

[0064] In step 302, the user is invited, via the interface module, to gradually transition to a state of well-being. A support is presented, for example, a soothing voice (sleep-inducing, hypnotic, or other). The user may also be invited to close their eyes. Communication is established between the respiratory measurement module and the training device, and the latter obtains a signal representative of the user's breathing. The signal obtained allows for an initial measurement or calculation E1 of at least one of the parameters mentioned above. In this example, the time parameter (for inhalation or exhalation) is used.

[0065] The duration of this step can be configured, for example, a duration in seconds. Alternatively, a respiratory status check can be performed at this stage, and step 302 can then continue until a desired state is reached.

[0066] Next, during step 303, a calming stimulus is presented to the user. For example, this could be a sound, an image, a video, or something else. The stimulus is presented via the interface module, and communication between the respiratory measurement module and the training device is maintained, allowing the latter to obtain a signal representative of the user's breathing during this step. The signal obtained allows for a second measurement or a second calculation E2 of at least one of the parameters mentioned above. In this example, the time parameter (for inhalation or exhalation) is used. The calming voice can also continue to guide the user.

[0067] The duration of this step can be configured (for example, a duration in seconds). Alternatively, a respiratory status check can be performed at this stage, and step 30 3 can then continue until a desired state is reached.

[0068] The measurements or calculations of the respiratory state E1 carried out during step 302 and / or the measurements or calculations of the respiratory state E2 carried out during step 303 can make it possible to define a respiratory profile of the user, for example dynamic, Relaxed, balanced, or other. A Cl value is calculated, for example, which corresponds to the average parameter (Cl = (El + E2) / 2). A C2 value is determined as the parameter when the user is calm. The dynamic profile corresponds, for example, to a longer inhalation than exhalation during a respiratory cycle. The calm profile corresponds, for example, to a shorter inhalation than exhalation during a respiratory cycle. The balanced profile corresponds, for example, to equal (or nearly equal) inhalation and exhalation times during a respiratory cycle. Starting from the user's initial profile, the goal is to guide them towards a calm profile. This profile can be used to configure their training program by adapting the animations presented during their daily training sessions.For example, if the user's profile is dynamic, the inhalation time shown in the animation can be decreased and the exhalation time increased. The breathing cycle itself can remain the same. If the user's profile is balanced, the inhalation time shown in the animation can be decreased and the exhalation time increased, but this time the breathing cycle can be slightly lengthened. If the user's profile is relaxed, the inhalation and exhalation times can be maintained.

[0069] In step 304, an animation is presented to the user. This can be a visual animation or something else. Figure 4 illustrates an example of a visual animation. A white disk 401 is presented on a black background. Inside the white disk, a concentric black disk 402 is placed. The area of ​​the white disk varies between a maximum and a minimum area. In parallel, in step 305, the measurement or calculation E3 of the user's breathing parameters is performed from the signal obtained from the respiratory measurement module, for example, in this case, the inspiration and expiration times. The animation is synchronized with this measurement. Thus, it is the user's breathing that drives the movements of the animation (the area of ​​the white disk, in the example of Figure 4).

[0070] The duration of steps 304 and 305 can be configured (for example, a duration in seconds or a number of breathing cycles). This is the initiation and learning phase.

[0071] During steps 304 and 305, user respiration parameter values ​​can be determined from the animation itself. Since the animation is synchronized with respiration, it is possible to deduce certain information from it. For example, in the case of an animation in which the surface area of ​​an object varies according to the user's respiration, as is the case, for instance, with the disc mentioned above, by knowing a proportionality coefficient between the surface area of ​​the object and the volume of air inhaled or exhaled (measured synchronized with a spirometer) (during training), it is possible to determine the user's tidal volume (or Tidal Volume).

[0072] Then, during step 306, the soothing support is presented to the user again. The duration of this step can be configured as a time or as a number of breathing cycles.

[0073] During step 307, the animation is presented to the user again, and in parallel, a new measurement or calculation E4 is implemented during step 308. However, this time, unlike in steps 304 and 305, the animation is not synchronized with the measurement.

[0074] The animation is now synchronized with the target breathing parameters. These are the parameters that will allow the user to reproduce this target breathing when presented with the animation after training, for example during a program to prepare for medical examinations.

[0075] For example, the animation takes into account the standard flow rates of the inspiratory and expiratory phases of a standard human respiratory cycle. For example, the animation is synchronized to values ​​determined based on measurements or calculations performed during steps 302 (results E1) and / or 303 (results E2).

[0076] The duration of steps 307 and 308 can be configured (for example, a duration in seconds or a number of breathing cycles). This is the control phase of the training.

[0077] Next, in step 309, a comparison is made to determine if the measurements in step 308 deviate from the desired target respiration.

[0078] For example, if the absolute difference between the measurements and the target is less than a threshold between 2.5% and 7.5%, and preferably 5%, the training ends and the target value is recorded in step 310. These are the E4 values ​​that should be used for the animation when the user wishes to approach the target respiration, for example, for a medical imaging examination or other examination, as in the examples cited above. The threshold can be set by default. It can also be updated according to the user, particularly when the training is repeated in a preparation program. Throughout the preparation, the threshold can be modified with each training session in order to approach the target values ​​with increasing precision.

[0079] In the event of a greater deviation from the target, two scenarios are possible. Either it returns directly to steps 304 and 305, or it goes back through step 303. The process is therefore repeated as soon as the absolute difference between the measurements and the target exceeds a threshold between 2.5% and 7.5%, and preferably 5%.

[0080] For example, it proceeds directly to steps 304 and 305 without going through step 303 when the absolute difference between the measurements and the target is less than a threshold between 15% and 25%, preferably 20%. Here too, the threshold can be set by default. It can also be updated according to the user, particularly when training is repeated in a preparation program. Throughout the preparation, the threshold can be modified as training progresses in order to approach the target values ​​with increasing precision.

[0081] For example, it went back through step 303 when the absolute value difference between the measurements and the target is greater than the threshold mentioned above (between 15% and 25%, preferably 20%).

[0082] The table below summarizes the various parameters measured or calculated during the different phases of the process. Phase 1 corresponds to steps 301 to 303 and the values ​​E1 and E2. Phase 2 corresponds to steps 304 and 305 and the value E3. Phase 3 corresponds to steps 307 and 308 and the value E4. Measurements Phase 1 Phase 2 Phase 3 El E2 Cl = E1 + E2 / 2 C2 = C1 “calmed” E3 E4 Minimum inhalation time Maximum inhalation time Number of inhalation phases Average inhalation time Minimum expiration time Maximum expiration time Number of exhalation phases Average exhalation time Minimum respiratory cycle duration Maximum respiratory cycle duration Number of respiratory cycles Average cycle duration Average velocity Average surface area Average velocity coefficient / Average surface area

[0083] The [Fig.5] is a functional diagram of a device 500 for the implementation of one or more embodiments of the invention.

[0084] The 500 device includes a communication bus to which the following are connected:

[0085] - a processing unit 5 01, such as a microprocessor, referred to as CPU;

[0086] - a 502 random access memory unit, called RAM, for code storage executable of a process according to an embodiment of the invention as well as the registers adapted to record the variables and parameters necessary for the implementation of a process according to embodiments, the memory capacity of which can be extended by an optional RAM connected to an expansion port for example;

[0087] - a 503 memory unit, called ROM, for storing programs computer systems designed to implement the embodiments of the invention;

[0088] - a 504 network interface unit connected to a communication network on which the digital data to be processed is transmitted or received. The 504 network interface can be a single network interface, or composed of a set of different network interfaces (for example, wired and wireless interfaces, or different types of wired or wireless interfaces). Data is written to the network interface for transmission or read from the network interface for reception under the control of the software application running in the 501 CPU;

[0089] - a user interface unit 505 for receiving inputs from a user or to display information to a user;

[0090] - a 5.06 hard drive marked HD,

[0091] - an I / O module 5 0 7 for receiving / sending data from / to external systems such as a video source or a screen.

[0092] The executable code can be stored either in read-only memory 503, or on the hard disk 506, or on removable digital media such as a disk. According to one embodiment, the executable code of the programs can be received by means of a communication network, via the network interface 504, in order to be stored in one of the storage means of the communication system 500, such as the hard disk 506, before being executed.

[0093] The central processing unit 501 is adapted to control and direct the execution of instructions or parts of software code of the program(s) according to embodiments of the invention, these instructions being stored in one of the aforementioned storage means. After power-up, the processing unit 501 is capable of executing the instructions from the main RAM 502 relating to a software application after these instructions have been loaded from the ROM program 503 or the hard disk drive (HDD) 506, for example. Such a software application, when executed by the central processing unit 501, results in the execution of the steps of a method according to embodiments.

[0094] The present invention has been described and illustrated in this detailed description with reference to the accompanying figures. However, the present invention is not limited to the embodiments shown. Other variations, embodiments, and combinations of features can be deduced and implemented by a person skilled in the art upon reading this description and the accompanying figures.

[0095] To satisfy specific needs, a person competent in the field of the invention may apply modifications or adaptations.

[0096] In the claims, the term “include” does not exclude other elements or steps. The various features presented and / or claimed may be advantageously combined. Their presence in the description or in different dependent claims does not preclude the possibility of combining them. The reference symbols shall not be construed as limiting the scope of the invention.

Claims

Demands

1. A computer-implemented respiratory training method comprising the following steps: - obtaining (302, 303) a signal representative of a user's breathing from a respiratory measurement module, - first measurement (305), during a first time interval, from said signal, of a breathing parameter of said user, - first presentation (304) to said user, on an interface module, during said first time interval, of an animation synchronized to said first measurement, - second presentation (307) to said user, on said interface module, during a second time interval, consecutive to said first time interval, of said animation synchronized to a target breathing parameter value, - second measurement (308), during said second time interval, from said signal, of said user's breathing parameter,- comparison (309) of said second measurement with said target respiration parameter value, and - recording (310) of said second measurement, based on a result of said comparison.

2. A method according to claim 1, wherein the steps preceding said recording are repeated according to a repetition criterion.

3. Method according to claim 2, wherein said repeatability criterion is a difference between said second measurement and said target breathing parameter value greater than a first target performance value of between 2.5% and 7.5% in absolute value.

4. Method according to claim 2, further comprising, before repetition of said first measure, the presentation of a calming support via said interface module.

5. Method according to claim 4, wherein said presentation of said soothing support is carried out when a difference between said second measurement and said target breathing parameter value is greater than a second target performance value of between 15% and 25% in absolute value.

6. Method according to claim 2, further comprising, before repetition of said second measure, the presentation of a calming support via said interface module.

7. Method according to claim 6, wherein said presentation of said soothing support is achieved when a difference between said second measurement and said target breathing parameter value is between a first target performance value and a second target performance value, the first target performance value being between 2.5% and 7.5% in absolute value and the second target performance value being between 15% and 25% in absolute value.

8. A method according to any one of claims 2 to 7, wherein at least one of said target performance values ​​is updated between two repetitions of said steps preceding said recording.

9. A method according to any one of the preceding claims, wherein said target breathing parameter is a function of said user's breathing cycle in inspiration and expiration time.

10. A method according to any one of the preceding claims, wherein said breathing parameter is a function of an inspiration and / or expiration time.

11. Device (101, 500) comprising a processing unit configured to carry out the steps of a process according to any one of the preceding claims.

12. System comprising: a device (101) according to claim 11, and a respiratory measurement module (103) configured to communicate with said device.

13. System according to claim 12, further comprising an interface module (102) configured to communicate with said device.

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