Abstract
Introduction:
Cancer-related pain (CRP) and its treatments are common and the scariest problems that patients with cancer fear and negatively affect their quality of life. Despite medical intervention, the pain of cancer still remains a clinical problem. Thus, the use of complementary medicine methods such as massage therapy is essential to control pain in the patients.Methodology:
It was a review type study limited to national and international studies from 1995 to 2015. Searching processes were completed by electronic databases and search engines. Finally, based on inclusion and exclusion criteria as well as the elimination of duplicate studies, nine articles were selected for final review among which five were clinical trials and four were review or meta-analysis articles.Results:
In all five clinical trials, massage therapy reduced pain of patients with cancer, which reflects the positive effects of massage therapy in adult patients with cancer. In addition, although various methods of massage therapy were employed, with short-term and long-term periods, it still had a positive impact. Meanwhile, four review or meta-analysis studies while different in the year of study, inclusion and exclusion criteria, manifested that the results of massage therapy was an effective non-pharmacological pain control in patients with cancer.Conclusions:
Finally, it can be concluded that massage therapy is an effective non-pharmacological way to control pain in adult patients with cancer. Furthermore, studies in Iran on the effects of massage therapy on pain in patients with cancer are limited and much more research is needed in this area.Keywords
1. Introduction
Cancer is a chronic condition whose incidence is increasing throughout the world. Patients with cancer face many chronic problems caused by the disease and treatments. One of the most important, widespread, and frightening problems in patients with cancer is chronic pain (1).
1.1. Cancer-Related Pain
Almost 30% of patients with cancer experience pain in diagnosis. The pain increases 65% - 85% as the disease progresses. Moreover, 90% of the hospitalized patients experience pain (2). The pain inflicted by cancer comes from different reasons such as the growth and spread of tumors, the side effects of treatments such as chemotherapy, radiotherapy, surgery, and underlying medical conditions (3).
Pain increases mental disorders, sleep disorders, insolvency, hopelessness, and fear in patient and family and also causes a complicated process of physical, mental and emotional struggles. Pain also influences social relationships, daily routines, and working ability resulting in financial problems (4-6). It decreases different aspects of the quality of life in both patient and family (7-9). The timely and proper pain relief leads to faster recovery, increased satisfaction and the quality of a patient’s life (10).
Nowadays some developments are made to lessen the pain through the pharmaceutical guides and frequent use of opioids for pain control in patients with cancer. However, almost 45% of such patients still report the lack of efficacy and side effects of medicinal treatments (11). In addition, more than 20% of patients resist against medicines, and those who do not resist face the side effects of opioids. Such unwanted effects include respiratory depression, sleep disorders, nausea and vomiting, constipation, itching, addiction, etc. This problem is so serious that some patients prefer to endure the pain rather than to use opioids. On one hand, such drugs are riskier in older patients (12). On the other hand, the pain caused by cancer still remains a clinical problem in such patients (13); therefore, it is essential to employ non-pharmacological methods or the complementary medicine therapies such as massage therapy to control the pain in such patient (11).
1.2. Massage Therapy
Massage therapy dates back to thousands of years ago. One of the nursing duties, the most common one, is to provide the most effective and safest complementary medicine therapies throughout the world (14, 15). Massage therapy is a physical and scientific manipulation with different intensities applied at a specific speed and harmony in direct relation to body tissues for rehabilitation, health promotion, and feeling good (16, 17). Massage therapy results in physiological effects (increased parasympathetic activities, increased blood flow to muscles and skin, increased relaxation hormone, and reduced stress hormone), psychological effects (relaxation and reduced anxiety), neurological effects (reduced spasticity and muscle strain, and reduced neuromuscular stimulation) and biomechanical effects (increased joint mobility, reduced active and passive stiffness, and increased muscle compliance), and it can control pain (17). Therefore, massage therapy can be used along with medicinal methods in patients with cancer.
1.3. Context
Currently, different methods of complementary medicine, especially massage therapy, are not used enough in Iran. One of the main reasons is that few studies are conducted on the use of complementary medicine. On the other hand, there are some problems with using pharmaceutical methods in patients with cancer in Iran. These problems make non-pharmaceutical methods more essential. The results of a study indicated that the prescription and consumption of opioids in patients with cancer would not follow a known and logical procedure in Iran, and frequent failures are observed in the prescription of medicine (18). Obviously, if simpler and safer methods are available to control pain in patients with cancer, it is not reasonable to deal with the abovementioned problems (3). Massage therapy can be considered an easy, safe, available and appropriate method. There are no review studies about massage therapy and cancer-related pain in Iran. Therefore this review study can help the healing teams to make better decisions in practice.
2. Objectives
The current study aimed to review domestic and foreign papers on the effect of massage therapy on pain in patients with cancer to obtain a more comprehensive perspective on the use of this non-pharmaceutical method in patients with cancer.
3. Methods
The review study included domestic and foreign research works from 1995 to 2015. The initial search was conducted from December 2012 to April 2013. The search was updated in April 2015.
3.1. Inclusion and Exclusion Criteria
The inclusion criteria were as follows: 1) only review studies on meta-analyses, and clinical trials on massage therapy, 2) Studies on patients with cancer above 18 years old, 3) patients diagnosed with cancer (not a specific type of cancer), 4) pain studied as a variable, 5) Studies conducted in English and Farsi, and 6) studies conducted from 1995 onward. The exclusion criteria were as follows: 1) abstracts, 2) having no control groups, 3) using other methods of complementary medicine along with massage therapy, and 4) considering a specific type of cancer.
3.2. Data Source and Study Selection
Electronic databases and search engines such as MEDLINE, excerpta medica database (EMBASE), cumulative index of nursing and allied health literature (CINAHL), Islamic world science citation center (ISC), Google Scholar, international scientific indexing (ISI), alumni medical library (MEDLIB), Magiran, and scientific information databases (SID) were employed to conduct the search. The search terminologies were looked up in Farsi and English. The search terminologies included (cancer OR oncological OR chemotherapy) AND (pain OR pains OR palliative) AND (massage) AND (review article OR meta-analysis OR systematic review OR randomized clinical trial). Based on the search terminologies of 183 papers, nine papers were finally selected with respect to the inclusion and exclusion criteria after deleting repetitive papers. Among these nine papers, five were clinical trials and four were reviews or meta-analyses (Figure 1). Moreover, there were eight foreign papers and only one Iranian one. For the sake of final investigation, Table 1 indicates clinical trials, and Table 2 shows review articles and meta-analyses.
Flow Diagram of Study Inclusion and Exclusion
Randomized Clinical Trial Studies
Review and Meta-Analysis Studies
4. Results
4.1. Randomized Clinical Trial Studies
Among the five selected clinical trials, 250 adult patients with cancer were studied, and 162 individuals (64.8%) received massage therapy in intervention group (Table 1). Four of the clinical trials included both male and female subjects (19, 20, 22, 23), and the subjects were all female in the study conducted by Nadjafi Ghezeljeh et al. (21). The number of males was greater than that of females only in one study (22). The intervention of massage therapy lessened patients’ pain in all five clinical trials; however, there was a significant difference between the intervention group and control group with respect to the pain intensity only in three studies (21, 22, 27). This indicated the positive effects of massage therapy on adult patients with cancer.
4.2. Review and Meta-Analysis Studies
In four of the studies, 47 clinical trials, reviews and meta-analyses were investigated in total (Table 2). The only meta-analysis was the study conducted by Lee et al. (24), and the rest of them were reviews (25-27). Although the year of study, inclusion and exclusion criteria, and the number of reviewed papers were different, the results of all four studies indicated that massage therapy could be useful as an effective non-pharmacological method to control pains in patients with cancer.
5. Discussion
Finally the results of the current review study showed that massage therapy could be useful as an effective non-drug method to control cancer-related pain.
In two studies conducted by Wilkie and Jane, the full-body massage therapy was used. However, the massage sessions were different in the two studies in terms of duration and time. In Wilkie’s study, there were two massage sessions in a week for several weeks; massage sessions were held for five days in Jane’s study. However, the intensity of pain reduced in the intervention group in both studies (20, 22). Moreover, Swedish massage was used in two studies conducted by Toth and Ahles. The duration of massage and time of each session were also different in these two studies; however, the pain lessened after the therapy (19, 23). On the other hand, foot massage was used for a short period (three days) in Nadjafi Ghezeljeh et al. study (21). Considering the abovementioned points, it is noteworthy that although different methods of massage therapy were used in short and long periods of time, the therapy had positive effects. Therefore, different methods of massage therapy can be used to control the short-term and long-term pains in patients with cancer. In particular, short periods of massage therapy with lower costs can be used to control pain among patients with financial difficulties. However, Swedish massage was used in both Toth and Ahles’s studies. Although pains lessened in the patients, there was no statistically significant difference between the massage group and control group, and more studies should be conducted on the use of this type of massage to control pain in patients with cancer (19, 23).
Although the average age ranged from 42 to 65 in these five clinical trials, the pain lessened in all of them, a fact which indicated that massage therapy could be used in adults at different ages. These studies were conducted in different countries; thus, various races, cultures and individual differences in samples could influence the perception of pain (9). Nevertheless, the positive effect of massage on pain relief was observed in these studies conducted in different parts of the world. In fact, massage therapy can be used to control pain in patients with cancer from different races.
One of the most important challenges observed in the results of the current review study was that there was only one study (conducted by Nadjafi Ghezeljeh et al.) which used massage therapy to control pain in patients with cancer in Iran. The study was conducted only on female patients (21). Perhaps, this is one of the reasons for the lack of controlling pain in patients with cancer in Iran. Therefore, more studies should be conducted on different methods of massage therapy in different places to observe the effects of this method on controlling pain in patients with cancer in Iran and find effective methods. Another challenge was that in all of the five clinical trials massage therapy was applied to patients hospitalized at oncology centers, not at home (Table 1). Therefore, a similar study should be conducted on home-care patients to clarify the effect of massage therapy at home more and ascertain whether it is more or less effective. This matter can influence the more appropriate use of this method of complementary method.
There was also another empty spot in the conducted searches, indicating that no Iranian review studies were available on the effect of massage therapy on pains in patients with cancer. Thus, review studies including Iranian papers should be conducted on the effect of massage therapy on the pain and other problems (fatigue, sleep disorders, stress and depression) in patients with cancer.
Since pain has an inverse relationship with the quality of life, which can be improved by controlling pain (7, 9), massage therapy can be used to control pain in patients with cancer to promote their quality of life (19). Pharmaceutical methods are effective to control pains in patients with cancer (apart from various side effects, fear of using drugs and misusing them). However, it takes nurses a great deal of time to apply pharmaceutical methods, and Iran is facing a serious shortage of nurses (28). On the other hand, it is possible that the patients resist against drugs. In such a case, either drugs lose effects to control the pain, or the dose has to be increased. The latter action would increase the side effects and result in more pain (29). Therefore, non-pharmaceutical methods such as massage therapy can be used along with pharmaceutical methods to control pain better and use pharmaceutical methods less. As a result, nurses spend less time applying drugs.
Massage therapy is an easy, cheap, non-aggressive and safe method with no side effects. It provides a patient with comfort and ease and promotes the quality of life (16, 30-32). Increasing trust and safety among patients is easily accepted by them (25), a fact which leads to more acceptances of therapies and cooperation on patients’ side (33).
5.1. Conclusions
This review study had several strengths: 1) this study was the first review study to investigate the effect of massage therapy on cancer-related pain in Iran which considered both domestic and foreign papers; 2) the review considered both randomized clinical trials and also review and meta-analysis studies.
Two general conclusions can be made from this review study: 1) the research results indicated that massage therapy was an effective non-pharmaceutical method to control pain in adult patients with cancer. Despite the differences in the demographics of statistical populations and different massage methods, similar results were also observed regarding pain relief in all studies; 2) the results also indicated that there were few Iranian studies conducted on the effect of massage therapy to control pain in patients with cancer.
5.2. The Application of Research Findings in Clinical Practices
Medical teams can use the results of the current study to have a more extensive look at the use of massage therapy to control pain in patients with cancer. Finally, it is suggested to employ different methods of massage therapy on larger samples both at hospital and home in future studies. In addition, it is advised to conduct more review studies on the effect of massage therapy on other problems in patients with cancer (fatigue, sleep disorder, depression and stress). Given the shortage of clinical studies in Iran, such studies should be especially conducted in Iran; hence, health cares are based on clinical evidence.
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