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Tavakkoli R, Nazer M, Zeinaddiny Meymand Z. Effects of Stress Inoculation Training on General Health and Occupational Adjustment Strategies in Patients with Multiple Sclerosis. J Occup Health Epidemiol 2021; 10 (2) :86-92
URL: http://johe.rums.ac.ir/article-1-429-en.html

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1- MSc in Psychology, Sirjan Branch, Islamic Azad University, Sirjan, Iran.
2- Assistant Prof, Dept. of Psychiatry, Rafsanjan University of Medical Sciences, Rafsanjan, Iran. , nazerm47@gmail.com
3- Assistant Prof, Dept. of Psychology and Educational Sciences, Kerman Branch, Islamic Azad University, Kerman, Iran.
Article history
Received: 2021/05/9
Accepted: 2021/06/21
ePublished: 2021/10/30
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Introduction
Multiple sclerosis (MS) is a sophisticated disease that affects the immune system. This disease has a persistent and potentially debilitating nature that affects the central nervous system (CNS), including the brain and the spinal cord. Besides, it involves more than one million people throughout the world [1]. The prevalence and incidence of MS have been rapidly increasing in all regions of Iran, especially in the central, western, and southern regions [2]. Besides, it affects various physical and mental dimensions, thereby causing multiple physical-psychological disorders [4].
There is no definitive therapy for MS, yet there are some treatments for reducing the symptoms and supporting MS patients. In addition to drug treatments, other therapies could be effective in controlling the disease. Moreover, management of physical and psychological complications in MS patients is of great importance [5]. During the past decades and apart from drug therapies, several psychological treatments have been developed and administered for psychological disorders. All physical, psychological, and cognitive complications are involved in MS, which somehow interact with each other, thereby affecting adjustment of MS patients to the surrounding environment in different manners [6]. These adjustment strategies play an important role in dealing with daily stress in human life [7].
Stress is one of the components of every long-lasting illness, including MS. Therefore, it is necessary to explore appropriate ways of reducing stress levels in this group of patients [8]. There are several ways of managing stress, including medications, behavioral therapy, cognitive-behavioral therapy, and metacognitive therapy, with each of these methods having its own advantages, disadvantages, fans, and critics. Psychiatric drugs are not accepted by all MS people. Behavior therapy, despite its being effective, is not applicable to all ages. In contrast, cognitive-behavioral therapy is a method gone through in few sessions with high effectiveness in all ages. However, metacognitive therapy is a unique method for fundamental changes in dysfunctional beliefs, which is not applicable to all age groups. Psychotherapy is the next method of high effectiveness, with its demerit being its need for a lot of therapy sessions [31]. Stress inoculation training (SIT) is based on cognitive behavioral therapy. SIT enables patients to better cope with problems caused by the disease and the induced stress, using principled and correct instructions [9-11]. Meichenbaum introduced SIT techniques on par with psychological and behavioral inoculation at a biological level. SIT provides opportunities for individuals to handle mild stressors to gradually resist strong ones. This training improves the ability to cope with stress by changing one's beliefs and self-talking about one's performance in stressful situations. SIT introduces a concept beyond insignificant training provided by specific adjustment skills. This program is designed to enable patients to intervene in and stimulate changes in their lives [12]. Besides, it addresses issues, such as resistance and return. SIT consists of information provision, the Socratic method of cognitive restructuring (CR), problem-solving, relaxation, behavioral training, self-monitoring, self-learning, self-improvement, and changing environmental situations [13].
According to Abedini et al, hope-based group therapy (HBGT) was effective in increasing hope and reducing depression in MS women [14]. Research findings revealed that patients examined for the methods of adjustment to stress were in an undesirable condition, and that stress could affect severity and recurrence of the disease, thereby reducing the quality of life in patients [15]. Given the negative effects of MS, the present study aims to investigate objective effectiveness of SIT in enhancing and improving general health and adjustment strategies in MS patients. Accordingly, the present study examined effects of SIT on general mental health and adjustment strategies in patients with multiple sclerosis.
 
Materials and Methods
This study was conducted in the Research Council of Islamic Azad University, at the Kerman branch. The participants of this educational trial consisted of all MS patients having referred to the Clinic for Special Diseases in Rafsanjan in 2018. According to the results of Hashemi's study [16] (S1=9.18, S2=6.01, M1=23.4, M2=18.93, α=0.05, d=10%) and the formula ( ), the sample size was considered to be 20 individuals in each group, who were selected by simple random sampling. The inclusion criteria were being able to read and write as well as giving written informed consent. The exclusion criteria included the presence of a disease other than MS in the patients and unwillingness to keep working with the researcher. After obtaining required approval from the authorities, the list of the patients having referred to the clinic (affiliated to Rafsanjan University of Medical Sciences) for special diseases was drawn up.
Accordingly, 40 patients were selected randomly based on the inclusion and exclusion criteria. Next, the objectives and methodology of the study were explained clearly to them. Afterwards, informed consent was obtained from the subjects to enroll in the study. Besides, under normal conditions, a pretest of the General Health Questionnaire (GHQ-28) and the Bell Adjustment Inventory were concurrently administered to the participants. Goldberg and Hillier (1979) introduced the 28-item General Health Questionnaire with the subscales of seven questions about somatic symptoms, anxiety, insomnia, social dysfunction, and depression [17]. GHQ scoring was based on the Likert scale of zero to three. On each scale, score 6 and higher as well as the total score of 22 and higher represented disease symptoms. The Cronbach's alpha coefficient was calculated to be 0.844 and 0.90 in the studies of Hjelle et al and Tabatabaei, respectively [18, 19].
Additionally, the adult form of the Bell Adjustment Inventory was used to explore adjustment skills in the individuals. This form contained five levels of individual and social adjustment skills, including home, health, social, emotional, and occupational adjustment skills [20]. This questionnaire had 160 questions, with each question consisting of three items of yes, no, and "I do not know". There was no right or wrong answers in this questionnaire, with each person being authorized to answer the questions based on their opinion. In answering the questions, it was necessary for the subjects to express their feelings, thoughts, and interests clearly. Scoring was based on the key provided by the question designer. A higher score in each area meant more consistency in that area. The total score obtained indicated general status of adjustment methods [1].
Having conducted the pretest, the individuals were randomly assigned to intervention and control groups. The training consisted of seven 90-minute sessions weekly, with a group workshop held at the Center for Special Diseases for the intervention group. Besides, the training was provided by one of the experienced researchers. In addition, the healthcare package provided was based on Donald Meichenbaum's Stress Inoculation Training [12].
The package included seven sessions, with the sessions held with one of the following inoculation steps:
1) A cooperative relationship was established with the authorities.
2) Symptoms and stress issues were discussed with the authorities with a focus on situational analysis.
3) Information was collected through interviews and questionnaires.
4) The authorities were assessed and criticized in terms of the benefits of the training program, with treatment plans and short-term objectives determined.
5) The authorities were taught about the interactive nature of stress and adjustment to it, with attention paid to the role of cognition and emotions in emergence and continuity of stress.
6) A conceptual model was presented for re-conceptualizing stress-related reactions of the authorities.
7) Potential resistance of the authorities and their reasons for lack of interest in treatment were forecasted and presupposed.
After the end of the training period, a post-test related to GHQ-28 and the Bell Adjustment
Inventory was performed for both groups, at the same time and under the same conditions. Data were analyzed by SPSS16.0. In the descriptive section, the mean, standard deviation, and frequency, and in the analytical section, analysis of covariance (ANCOVA) were used. In all stages of statistical analysis, the significance level was set at less than 0.05
 
Results
The subjects' mean age was 34.92 ± 7.32 years (within the range of 25-56 years). The age difference between the intervention and control groups was not significant (p = 0.816).
Out of the 40 participants, 24 (60%) were women and 16 (40%) were men, with 12 (60%) women and 8 (40%) men having been present in each group of 20 individuals.
Table 1 shows the mean scores of the research variables in the two groups before and after the inoculation training sessions.
Analysis of covariance was (ANCOVA) used to investigate effects of inoculation training on research variables. Next, the statistical assumptions were examined. The p-value of the Kolmogorov-Smirnov test was not significant for any of the research variables, except for social adjustment (p = 0.026). In addition, homogeneity of variances was examined. The p-value of the Levene's test was not significant for any of the research variables except for health adjustment (p = 0.013) and emotional adjustment (p = 0.026).
The analysis of covariance (ANCOVA) was used to examine effects of inoculation training on the dimensions of general health. Accordingly, pretest scores of age and gender were used as the covariate to control pre-existing differences in the dependent variable. Besides, the summary of analysis of covariance showed that effects of inoculation training on general health dimensions, including physical health (p = 0.513), anxiety (p = 0.449), social health (p = 0.877), and depression (p = 0.107) were not significant. Besides, the results of the analysis of covariance showed that the effects of inoculation training on occupational (p = 0.038) and emotional (p = 0.001) dimensions of adjustment were significant. However, the effects of inoculation training on social (p = 0.128), home (p = 0.439), and health (p = 0.434) dimensions were not significant (Table 2).

  
Table 1. The mean (M) and standard deviation (SD) of the scores of the research variables in patients with multiple sclerosis in Rafsanjan, 2019

Variable

Stage

Intervention

Control

M ± SD

M ± SD

General Health dimensions

Physical health

Pretest

11.45±3.15

10.05±2.33

Post-test

11.40±30.8

10.05±3.47

Anxiety

Pretest

7.0±2.25

6.50±2.26

Post-test

6.10±1.94

6.70±2.72

Social health

Pretest

7.25±1.68

7.40±2.21

Post-test

6.70±1.56

7.20±1.96

Depression

Pretest

6.60±1.57

5.90±1.25

Post-test

5.80±1.32

5.75±1.25

Dimensions of adjustment scores

Social

Pretest

15.0±2.73

14.95±2.45

Post-test

14.35±1.93

14.85±2.45

Home

Pretest

14.6±4.72

14.55±4.27

Post-test

13.3±4.23

14.5±3.73

Health

Pretest

19.15±20.6

20.15±2.45

Post-test

18.9±2.02

19.85±2.11

Occupational

Pretest

14.2±1.51

14.75±3.06

Post-test

13.6±1.35

14.7±2.72

Emotional

Pretest

16.2±2.74

17.0±4.25

Post-test

13.2±2.74

17.1±3.78

Overall

Pretest

79.15±8.48

81.4±12.42

Post-test

73.35±7.66

80.95±10.06

 

The mean scores and standard deviation of the HSOPSO, JID, and frequency of burnout were 135.4 ± 10.1, 68.07 ± 13.2, and 53.8 ± 4.5 respectively. Table 2 shows the mean scores of the studied variables in the hospital staff.

 
Table 2. Tests of between-subjects effects in the patients with multiple sclerosis in Rafsanjan, 2019

Dependent variable

Source of changes

SS

df

MS

F

P

ES

Physical health

Pretest

364.032

1

364.032

320.117

0.000*

0.901

Group

0.000

1

0.000

0.000

0.992

0.000

Error

39.801

35

1.137

-

-

-

Anxiety

Pretest

175.188

1

175.188

260.338

0.001*

.0881

Group

10.687

1

10.687

15.881

0.001*

0.312

Error

23.552

35

0.673

-

-

-

Social health

Pretest

95.686

1

95.868

171.016

0.001*

0.830

Group

1.296

1

1.296

2.311

0.137

0.062

Error

19.620

35

0.561

-

-

-

Depression

Pretest

34.306

1

34.306

50.588

0.001*

0.591

Group

1.759

1

1.759

2.594

0.116

0.69

Error

23.735

35

0.678

-

-

-

Social adjustment

Pretest

139.096

1

139.096

117.13

0.001*

0.770

Group

2.691

1

2.691

2.266

0.141

0.061

Error

41.564

35

1.188

-

-

-

Home Adjustment

Pretest

527.237

1

527.237

278.505

0.000*

0.888

Group

15.545

1

15.545

8.212

0.007*

0.190

Error

66.258

35

1.893

-

-

-

Health adjustment

Pretest

132.750

1

132.750

168.407

0.001

0.828

Group

0.153

1

0.153

0.194

0.663

0.005

Error

27.589

35

0.788

-

-

-

Occupational adjustment

Pretest

142.04

1

142.04

165.355

0.001*

0.825

Group

4.368

1

4.362

5.078

0.031*

0.127

Error

30.065

35

0.859

-

-

-

Emotional adjustment

Pretest

368.71

1

368.71

645.075

0.001*

0.949

Group

100.052

1

100.052

175.047

0.001*

0.833

Error

20.005

35

0.572

-

-

-

Overall

Pretest

2750.06

1

2750.06

479.466

0.001*

0.932

Group

329.45

1

329.45

57.439

0.001*

0.621

Error

200.749

35

5.736

-

-

-

 
Discussion
The results of this study showed that Stress Inoculation Training (SIT) could be effective in improving some aspects, including occupational and emotional adjustment in MS patients. In this regard, the findings of the present study were consistent with those of the studies by Ahmadi et al on the effects of SIT on self-expression and social adjustment in students [7], Ghaffari et al on the effects of SIT on adjustment and quality of life in mothers of educable mentally retarded children [9], and Ahmadi et al on the impact of SIT on adjustment in veterans [21].
According to the results of the present study, SIT did not affect dimensions of general health. In this context, the results of the present study were inconsistent with those of Golrokh Clozi et al on the effects of SIT on general health of students [22], Ghasemi and Ghobadzadeh on the effects of stress inoculation group training on mental health of MS patients [11], Agland et al on the effectiveness of stress management programs in reducing stress and improving quality of life in people diagnosed with multiple sclerosis, Tavakolizadeh et al on the effects of SIT on coping styles and psychological wellbeing in mothers with mentally retarded children [25], Piri-Kamrani et al on the effects of stress management skill training on perceived stress and resiliency in women with multiple sclerosis [27], Kashani et al on the effects of stress inoculation group training on general health in patients with cancer [13], and Navidian et al on the effects of SIT on general health in midwives with occupational stress at healthcare centers [28]. Differences in geographic locations, training methods, and demographic characteristics of the patients could have been the reasons for the conflicts in the study results.
Regarding the effects of SIT on general health in patients with MS in some studies, one can argue that the majority of these patients feel helpless after getting informed about definitive diagnosis of their disease. This usually happens due to the loss of some abilities to perform their activities, which makes them suffer depression [29]. Given that SIT is a cognitive-behavioral therapeutic intervention, its sessions provide the opportunity for identifying and challenging negative automatic thoughts, in addition to identifying and correcting cognitive errors in individuals [30]. Vazirinejad et al reported that performing a psychological training intervention combined with using a gradual muscular stress relaxation method in patients with MS increased QOL [31].
Stress relaxation makes patients abandon do's and don'ts as well as idealistic thoughts so as to accept their illnesses and inability to deal with certain matters and to cope with them logically [30].
By means of a problem-solving approach, the given person can find effective solutions for situations in life by creating a mental order, despite their disabilities, to continue their daily activities as much as possible. Accordingly, the feeling of helplessness decreases for such a person, thereby providing a better lifestyle for them, due to the decrease in the symptoms of depression [32]. Physiologically, one can explain that the Fight-or-Flight Response, being a set of biochemical changes, makes a person get prepared for stress exposure [33].
Not only does SIT increase a person's ability to effectively adjust themselves to the events, but it also creates a feeling of control over the environment. The better people dominate stress control, the more effectively they will have mental health. This is due to the fact that they will act in accordance with their position and accurate assessment of their feelings [34, 35]. The ineffectiveness of this training approach to the physical dimension of general health could be attributed to the particular attitude of individuals towards MS that is regarded a debilitating and crippling disease. It could also be attributed to its severe effects on the sensory nervous and muscular systems. Therefore, it is necessary for further training that treatments or rehabilitation be used to improve physical conditions [36].
The results of the statistical test showed no significant differences between the women and the men in terms of adjustment dimensions and general health. Since stress exists in the life of both men and women, inability to cope with and manage it can affect both sexes, thereby reducing general health and causing psychological disorders. However, stress-inducing issues may vary in both sexes. SIT aims to teach stress management methods and their application in daily activities. However, this method is not taught only in certain stressful conditions. Therefore, teaching this method increases adjustment and management abilities in individuals in dealing with stressful situations. In addition, it provides an opportunity for them to increase their control over their own life so as to cope with various situations more effectively. This increases general health and reduces psychological disorders, such as depression caused by lack of control over life and inability to handle stressful conditions in individuals. Therefore, the degree of the effectiveness of this method is determined by the course of its application, not by gender [9, 22]. It is suggested that other psychological methods be examined to improve general health in patients with multiple sclerosis. Additionally, it is recommended that stress inoculation training methods be used by psychologists at certain clinics to improve patient adjustment.
 
Conclusion
It is concluded that stress inoculation training was effective in improving occupational and emotional adjustment. However, it had no effects on the dimensions of public health. It seems that in order to improve general health in patients with multiple sclerosis, various variables, in addition to stress control, are needed.
 
Acknowledgement
This article was an excerpt from Ms. Tavakoli's master's thesis (approval letter no. 589). We would like to extend our gratitude to the Clinic for Special Diseases affiliated to Rafsanjan University of Medical Sciences for providing the data for this study.
 
Conflict of interest: None declared.


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