Music Therapy in Pediatric Asthma: A Short Review

Introduction

Asthma is the most prevalent chronic respiratory disease; it affects 14% of children worldwide. The management approach for asthma includes pharmacological and non-pharmacological strategies.^1,2 According to the latest report on asthma by the Global Initiative for Asthma (GINA),³ asthma can be classified into mild, moderate, and severe (Table 1). The asthma classification should be determined before initiation of pharmacological intervention.² Airway obstruction, which is a main feature of asthma, may result in functional impairment and lung damage and includes 1) spasm of bronchial smooth muscles, which indicates an abnormal muscle function; 2) mucus secretion, which may plug small airways; and 3) inflammation, which constricts the airways.² Pharmacological therapy aims to relax the smooth muscles, recover pulmonary function, and decrease inflammation. Guidelines³ show that children diagnosed with asthma may receive regular or long-term medications and that asthma symptoms were controlled in at least 80% of children who received inhaled corticosteroids.⁴ However, poor adherence may directly affect the therapeutic effect of medication, which should not be ignored. The bitter taste of medications, the inconvenience of using asthma devices, and adverse reactions may be the potential factors that lead to poor medication compliance.⁵ Therefore, in addition to medication, therapists gradually shift their focus on providing non-pharmacological strategies to improve medication compliance and better control asthma control, such as suitable physical activity. This includes swimming for young people with asthma, which could improve cardiopulmonary fitness and can have a small benefit for asthma control and lung function. Importantly, the breathing exercises recommended in the GINA, including the Buteyko and the Papworth methods, reported improvements in symptoms, quality of life, and psychological measures, voluntary reduction in the use of rescue medication, or engagement of the patient in their health care.

Table 1 Classification of Asthma by Severity

Coincidentally, music therapy (MT), as a new non-pharmacological strategy, could combine breathing exercises or simple physical activities with music and improve medication adherence as well as symptoms, lung function, and regulate mood.^2,6–8 This may offer a new approach to asthma treatment in asthma clinical practice.

Indeed, MT is increasingly applied to improve patient health, reduce stress, and distract patients from unpleasant symptoms because it is cheaper than traditional therapies.^9,10 It was reported² that in the comparison of pulmonary function between musicians that played wind instruments and non-musicians, implying that the increased lung capacity is attributed to breathing exercises as well as regular singing training and wind instrument playing. We believe that MT would be effective for patients to manage their asthma, including mood regulation, medication compliance, symptom frequency, and even lung function recovery. Meanwhile, GINA showed that proper breathing exercises and simple physical activities should be encouraged to improve medication adherence as well as symptoms and lung function and regulate mood for pediatric asthma patients. We believe that MT should gradually be getting more attention and application in pediatric asthma therapy due to its safety, convenience, mood effects, low expense, and effective function in physiology and psychology. This is especially true during difficult periods such as COVID-19, when pediatric asthma patients might suffer from more severe symptoms or injury to their lung function due to the limitations of going to the hospital, taking normal therapy, or availability of rehabilitation off-online, with daily nervousness or depression. An acceptable and pleasing therapy method is necessary and important for patients’ recovery.

Although an increasing number of pediatric scientists, researchers, and psychologists focus on MT, most of them are strangers to this field, and there are still few reports regarding the application of MT to pediatric asthma patients and their long-term therapy. Therefore, many researchers interested in MT are confused about its process and mechanism, let alone desire to research MT or apply it to clinics. They may ask questions such as, “What is MT?”, “What kind of music or music activities should be carried on?”, “What would the treatment cycle be?” and “How to assess the effect with valid biotic factors?” Thus, a systematic, concise, and basic review is necessary for readers and researchers from different backgrounds to understand MT.

According to previous research, MT could be successfully used in children aged 5–11 years old and adolescents with mature cognitive and executive abilities to complete the necessary music activity. We briefly summarized the advances and latest developments in MT applied to pediatric asthma patients (children aged 5–11 years old and adolescents) from reviews and research. We determined that MT could regulate mood, alleviate anxiety, ease symptoms, improve medication compliance, and help reduce the dosage of drugs in pediatric asthma patients. We believe this short review will be a significant reference for future research to design and renew MT methods and clinical practice that could be successfully used for pediatric asthma patients, even patients diagnosed with respiratory diseases.

Methods

Search Strategy

We searched for studies published between 1990 and 2021 through Medline/PubMed, Embase, SportDis-cus, Cochrane Library, Teacher Reference Centre, Web of Science, Academic Search Complete, PsycARTICLES, and Scopus. Databases were searched for Randomized Controlled Trials, clinical trials, and observational studies using the following keywords: asthma in pediatrics, MT, complementary therapies, and MT in pediatric asthma.

Subjects

Pediatric asthma patients (children aged 5–11 years old and adolescents).

Content

The diverse applications of MT to pediatric asthma patients and the therapeutic of MT on asthma symptoms, lung function, medication, and emotion adjustment.

Intervention

The musical intervention for patients discussed in this paper is divided into two types. The first is active MT through creating music by singing or playing instruments. There was no difference or preference between different age, gender, or background when choosing an instrument, it was dependent on choice and the arrangement of the music therapist. The second is passive MT, through listening to music. The intensity of MT can vary with the functional role it plays in the whole therapeutic process, with no restrictions on the length, frequency, or duration of the music.

Outcome Measurements

At least one positive effect must be evaluated in each experimental research in this paper.

Result

The primary literature search identified 458 citations. After removing duplicate citations and scattered contents, 125 unique citations were selected to further screening. Seven studies that focused on pediatric asthma and MT were ultimately chosen for our review for further analysis and summary. Exclusions occurred because of small sample sizes, trials without randomization, or unconvincing results. The included studies were heterogeneous in terms of MT methodology but covered the latest research results in MT applied to pediatric asthma patients. The interventions varied from passive MT (listening to relaxation music, progressive muscle relaxation with background music) to active MT (breathing exercises, singing, and/or playing wind instruments). MT was applied to children in both in and outpatient settings. Patients from experimental and control groups may receive different feedback from different music methods, periods, and environments. The basic and effective information from the results of each reference is shown in Table 2.

Table 2 The Main Information of Appraised Studies

Relieves Symptoms

Asthma exacerbation is accompanied by chest tightness, dyspnea, cough, and other symptoms. Prior to this, patients often experience symptoms such as nasal obstruction, sneezing, eye itchiness, and even dyspnea and hypoxemia. Loewy⁶ recruited 173 children and divided them into three groups based on therapeutic modalities applied to them, such as listening to music, playing instruments, and breathing exercises. The results showed that MT could relieve symptoms, such as cough and chest tightness, and reduce the number of hospitalizations, absences from classes, and ER visits. Eley¹¹ also reported that the severity of symptoms in 27 children decreased after MT. In their research, MT consisted of playing wind instruments and singing. Andrew,⁷ who used the same musical measure for his patients, also found that playing wind instruments could significantly relieve symptoms and improve patients’ sleep. Researchers^8,12 have reported that MT could decrease the frequency of pediatric asthma exacerbation and improve sleep quality in pediatric asthma patients 7–18 years old.

Ameliorates Medication Compliance

Children diagnosed with asthma may require medication (Table 3), such as pills and aerosols, to prevent disease progression. Pills with bitter or acidic taste may result in rejection or reluctance to take medications. Meanwhile, parents and children may not properly use aerosol medications, which would affect both compliance and function. Andrew’s research⁷ found that after playing wind instruments, the inhalation technique improved, and there was less dependence on reliever medications. Loewy⁶ also reported that after MT, parents were less anxious about their children’s medication compliance. Although the mechanism is unclear, it might be related to the patient’s positive emotions or the recovery of lung function following MT.

Table 3 Initial Asthma Medication Treatment

Improves Pulmonary Function

Pulmonary function, defined as the lung’s respiratory function, should be clinically tested in patients who have pulmonary disease and in patients with dyspnea or those who require surgery.¹⁴ It was reported that subjects’ lung function was either maintained or improved after singing. When the lung function of musicians and non-musicians were compared, musicians had better lung function due to playing wind instruments and practicing singing for several years. It is implied that the increased lung capacity could be attributed to breathing and regular exercises.² Loewy⁶ proved that MT could positively affect pulmonary function, while pediatric asthma management significantly improved in the MT group compared with the control group. Moreover, Eley¹¹ and Wade² also demonstrated that singing could maintain or increase peak expiratory flow (PEF) in pediatric asthma patients. Janiszewski¹³ reported that the forced expiratory volume in 1s (FEV1 and forced vital capacity (FVC) of 18 years old pediatric asthma patients improved after performing music-assisted breathing exercises. To observe the effects of medication and whether patients’ symptoms could be relieved, doctors recommend testing for PEF, which patients and parents can perform at home. Research^2,6–8 has reported improved PEF after MT. It may be further proven that MT might exert a significant impact on asthma therapy and will be a potential mechanism related to the satisfactory consequences of MT. The pulmonary function test and the effect of MT on the Pulmonary function index are showed in Table 4.

Table 4 Pulmonary Function Index and the Effects of MT

Improves Quality of Life

Pediatric asthma patients often require long-term medications and frequent hospitalizations. Hence, parents restrict their children from performing physical exercises such as running, swimming, and playing, which are common activities during childhood.¹⁵ Therefore, music may play a pivotal role in replacing physical activities while improving patients’ mood and pulmonary function.^16,17

Studies have shown that students with asthma who played wind instruments and sang have a more favorable attitude towards their condition than those who do not participate in musical activities. Accordingly, these patients’ asthma exacerbations decreased.^2,12 Loewy⁶ pointed out that children’s cognition and perception improved compared to the control group. Additionally, breathing and retraining programs have remarkably improved the quality of life in patients whose asthma is not adequately controlled by pharmacological methods. Furthermore, Eley¹¹ reported that participants from their research expressed interest and enjoyment in activities that may help them comply with medication while being able to relax.

Psychological and Emotional Management

Research revealed that various MT for pediatric asthma patients might result in several benefits, including improvement in psychological well-being, emotional regulation,⁶ acquisition of knowledge regarding asthma,¹¹ and management of panic and anxiety during asthma exacerbation,^12,13 which is helpful for pediatric asthma patients and their parents.

Discussion and Future Directions

Pediatric asthma patients should attract more attention from the public. We found that a number of MT research focused on other diseases such as autism,^18,19 neonatal treatment,^20,21 emotional regulation,^22,23 and mood disorders,^24,25 suggesting MT can have a positive therapeutic impact. However, there has been little research on MT for pediatric asthma patients. We collected and arranged relevant information in this review regarding the application of MT to pediatric asthma patients to illustrate that MT has been proven to improve asthma symptoms, medication compliance, and pulmonary function and helps to manage anxiety and depression in pediatric asthma patients.

The world faced a tremendous challenge and is engulfed by one of the most widespread and severe public health crises in decades, as COVID-19 has become the leading cause of death internationally from 2019–2022.²⁶ People are particularly vulnerable to feel negative emotions such as fear and anxiety. This is experienced by doctors and nurses working with patients²⁷ and non-healthcare workers, who all experience different levels of psychological distress and depression.²⁸ MT may be applied in these situations to improve mood and reduce stress, and it may also become an important auxiliary therapy following surgery or pharmacological therapy. Due to COVID-19, pediatric asthma patients in China have a decreased frequency of hospital visits. Thus, exploring how to apply MT online or combine the online and off-online models can be widely promoted (Figure 1). This can benefit pediatric asthma patients in remote areas and those with emotional problems and experiencing physical pain or discomfort. Meanwhile, artificial intelligence technology(AIT) is gaining popularity among the public. If we could develop related software to support MT in pediatric asthma control, patients may benefit from the technology with immediate feedback, biotic parameter estimation, and diverse music experience during the immersive therapeutic atmosphere. Future research should focus on the technological evolution of MT and its potential function mechanism—for example, the relationship between MT and brain science and MT and psychology.

Figure 1 Clinical referral procedures and future research directions of MT.

We hope our manuscript will be a suitable reference for related researchers to understand the basic information for MT and future studies to explore the effective and innovative MT models and methods that could be applied to pediatric asthma control and even other pediatric diseases.

Conclusion

MT is effective for physiology and psychology and has been increasingly applied for pediatric asthma therapy. MT may improve a child’s asthma symptoms, medication compliance, and pulmonary function and help children and their parents manage their mental health. Future research should focus on the technological evolution of this method and model MT and its potential functional mechanism.