Eight Weeks of Aerobic Exercises Improves the Quality of Life in Healthy Aged Sedentary Men

AUTHORS

Mojtaba Amini 1 , Masoud Mirmoezzi 2 , * , Maryam Salmanpour 3 , Davood Khorshidi 4

AUTHORS INFORMATION

1 Department of Physical Education and Sport Sciences, Islamic Azad University, Science and Research Branch, Tehran, Iran

2 Department of Physical Education and Sport Sciences, Islamic Azad University, Central Tehran Branch, Tehran, Iran

3 Department of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran

4 Department of Physical Education and Sport Sciences, Islamic Azad University, Saveh Branch, Saveh, Iran

ARTICLE INFORMATION

International journal of Sport Studies for Health: 1 (1); e67514
Published Online: January 29, 2018
Article Type: Research Article
Received: December 14, 2017
Accepted: January 15, 2018
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Abstract

Objectives: Advancements in health care systems and technologies have lowered the rate of mortality leading to an accelerated increase of aged population in Iran and worldwide. Therefore, the aim of the study was to investigate the effect of aerobic exercises on quality of life in healthy aged sedentary men.

Methods: In this randomized controlled trial, 26 healthy aged men living in Qazvin nursing home participated voluntarily and were randomly assigned in two experimental (n = 13) and control (n = 13) groups. The experimental group performed aerobic exercise protocol three sessions a week for two months. The quality of life was assessed Using SF-36 health survey before and after exercise intervention. The data were analyzed by paired and independent t-tests.

Results: The results suggested that quality of life was improved significantly after exercise program (P = 0.001), while no significant change was found in the quality of life in the control group (P = 0.34).

Conclusions: Taken together, 8 Week of aerobic exercise program significantly improves the quality of life among the aged persons Additional research with a greater number of subjects and different exercise protocols are required to make crucial decisions regarding the effectiveness of similar exercise programs on aged persons.

Keywords

Quality of Life Aged Health Exercise

Copyright © 2018, International Journal of Sport Studies for Health. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited
1. Background

Advancements in health care systems and technologies have lowered the rate of mortality leading to an accelerated increase of aged population in Iran and worldwide. Considering the importance of health care maintenance in aged persons as a social necessity, the elder mistreatment has been extensively increased (1). Based on world health organization report, the increased global population of aged persons is projected to be more than double by 2050 especially in developing countries (2) which show the remarkable life expectancy globally (2). In this regard, Aging is rapidly progressing in Iran which necessitates daily nursing care in this group age. The increase in longevity along with keeping the aged populations physically and mentally health is of utmost importance for health objectives (3). Some studies have supported the notion that regular exercise can mitigate the negative effects of degenerative changes of aging on physiological and psychological functions (4). Some investigations have been conducted to study the importance of quality of life in aging. It was shown in a study that aged individuals with regular exercise had less cognitive decline after 2.5 years (5). Health professionals especially sport sciences practitioners have recently implemented different exercise Protocols to reduce the need for nursing care. In the research literature, the effects of different exercise programs on different aspects of physical, physiological and psychological performance of aged persons with health problems have widely been studied (6-9), while considering the issues such as quality of life in healthy older adults is insufficient. Given the importance of health management in the healthy aged people, the research was to investigate the effect of 8-week selected aerobic exercise on quality of life in healthy sedentary aged Men.

2. Methods

In this randomized controlled trial, 26 healthy aged men (aged 60 - 75 years) of over 200 individuals living in Qazvin nursing home who agreed to participated in the study, were invited to the study and randomly assigned in two experimental (n = 13) and control (n = 13) groups. Inclusive criteria were a, independency in carrying out daily tasks; b, healthy vision; c, no history of falling over the past year; d, lack of dislocation or chronic arthritis problem; and e, no dizziness. The experimental group performed aerobic exercise protocol three sessions a week for two months. The exercise program is presented in Table 1.

Table 1. The Exercise Protocol
WeekSession No.Exercise IntensityWarm-up Duration, minWalking Duration, minSlow Running Duration, minCool Down Duration, min
1360% maximum heart beat108210
2360% maximum heart beat1092.3010
3360% maximum heart beat1010310
4360% maximum heart beat10113.3010
5365% maximum heart beat1012410
6365% maximum heart beat10134.3010
7365% maximum heart beat1014510
8365% maximum heart beat10155.3010

Moreover, general health including the absence of any heart disease, diabetes, respiratory problems, blood pressure and organic problems were checked, and the health permission was issued by the physician of the nursing home. The quality of life was assessed Using SF-36 health survey as a standard tool (10) before and after exercise intervention. The tool consisted of 36 questions regarding the physical and social functioning, emotional roles, mental health, vigor and vitality, physical pains and general health (11). Furthermore, SF-36 assesses two major domains including physical and mental functioning. The scores on the SF-36 is in the range of 0 - 100 with higher scores indicating better state in quality of life. The validity and reliability of the SF-36 was confirmed with an appropriate validity and reliability in Iranian population (12). The internal consistency coefficients for the total questionnaire were ranged from 0.70 to 0.85 showing good and acceptable level and the test-retest coefficients with one-week interval were reported as 0.43 to 0.79. Paired and independent t-tests with a significance level of P ≤ 0.05 (SPSS Inc., Chicago, Ill., USA) were conducted to determine whether the differences between the two groups could be significant after aerobic exercise treatment.

3. Results

Comparing the general characteristics in the two groups in baseline (Table 2), the results showed no significant difference between the age, height, and weight factors (P > 0.05).

Table 2. General Characteristics of Participantsa
VariablesAge, yHeight, cmWeight, kg
Experimental group69.53 ± 1.23168.64 ± 2.0869.45 ± 2.19
Control group69.42 ± 1.95170.35 ± 2.4968.21 ± 3.23
P value0.140.210.08

aData are given as means ± SD.

Kolmogorov-Smirnov test was conducted to test the normality of distribution before further analysis. The test showed that all variables of quality of life had normal distribution (P  ≥  0.05) (Table 3). Then, paired-t-test was used to analyze the data.

Table 3. Results of Kolmogorov-Smirnov Test
VariablesGeneral HealthPhysical FunctioningPhysical RoleBodily PainsEmotional RoleMental HealthVitalitySocial Functioning
Kolmogorov test0.7840.8760.8920.6470.7420.9300.7601.141
Significance level0.6310.3780.4040.7970.4510.3520.6110.148

The results are shown in Table 4. Whereas the experimental group increased their scores in all the variables of quality of life (P < 0.05), the control group had no significant change (P > 0.05).

Table 4. The Effect of the Aerobic Exercise on the Scores of the SF-36 Questionnairea
DomainsItemsControlExperimental
Pre-testPost-testPre-testPost-test
Physical healthGeneral health41.35 ± 13.8733.01 ± 15.6344.39 ± 8.6460.26 ± 12.45*
Physical functioning43.23 ± 14.4740.38 ± 15.7450.77 ± 7.5967.69 ± 11.83*
Physical role52.47 ± 21.4149.54 ± 20.1949.61 ± 19.1957.69 ± 35.79*
Bodily pains32.69 ± 17.7538.65 ± 18.8454.04 ± 12.8176.73 ± 18.46*
Mental healthEmotional role46.24 ± 15.7947.15 ± 14.1343.26 ± 16.0164.10 ± 28.74*
Mental health53.54 ± 12.1752.61 ± 12.5359.69 ± 9.7271.38 ± 13.35*
Vitality46.92 ± 15.0746.15 ± 14.1652.98 ± 14.9665.77 ± 13.82*
Social functioning36.54 ± 13.9429.80 ± 15.7644.61 ± 15.3766.35 ± 16.64*

aData are given as means ± SD.

As it can be seen in Table 5, a significant difference was found between quality of life in the two groups in post-test (P = 0.001).

Table 5. The Effect of the Aerobic Exercise on Quality of life (Independent t-Test)
Quality of LifePre-Test, Mean ± SDPost-Test, Mean ± SD
Experimental group46.04 ± 11.9266.25 ± 9.61
Control group44.21 ± 7.2842.16 ± 8.07
P valuea0.510.001

Abbreviation: SD, Standard Deviation.

aIndependent-test.

Comparing the Overall Quality of Life Before and After Treatment
Figure 1. Comparing the Overall Quality of Life Before and After Treatment
4. Discussion

Although the positive effects of exercise on quality of life in unhealthy aged people are well documented, the necessity for keeping the healthy ones into safe condition still exists. Therefore, the purpose of the research was to investigate the effect of eight-week aerobic exercises on quality of life in healthy aged sedentary Men. In this regard, the different modes of aerobic exercises have been widely used to improve the factors affecting the quality of life in aged people. The results confirmed the hypothesis that 8 weeks of aerobic exercise program significantly improves the overall quality of life in line with physical and mental functioning in healthy aged sedentary men. It can be stated that Aerobic exercises can increase the aged potentials to perform their daily tasks (13). The findings demonstrate that regular walking and slow running improves quality of life physically and mentally, then it can be adopted by health specialists as a safe and cheap strategy. One possible explanation for given results could be attributed to the positive effect of walking on cardiovascular fitness, stress control, and weight control (2). Consistent with our study, Leinonen et al., and Chodzko-Zajko l suggested that regular aerobic exercise improves the quality of life in older adults (14, 15). Furthermore, Brach et al. showed that daily exercise with medium intensity (20 - 30 minutes) contributes to reduce activity limitations, increase role-playing, and hence, increase the quality of life and well-being among the aged persons (16). The study of Guttierrez et al. indicated that exercise can increase the quality of life among aged ones (17). Dehkordi, and Borzoo conducted the same study on the old people living in the nursing homes of Borujen, Shahrekord, and Ahwaz, and indicated the effectiveness of intervention on the quality of life (18, 19). On the contrary, Barrett et al. showed no significant effect of anaerobic and resistance exercises on the quality of life (20). Different methodology and training protocols can be a possible reason for these convergent results. Despite many studies on this issue, few studies investigated the effectiveness of aerobic exercise on the aged persons with no special diseases. Since aerobic exercises such as walking and slow running are low-cost, easy to do and accessible, the aerobic exercises are highly recommended for healthy sedentary aged people in order to provide them with healthy. This research presents several limitations. The main limit is probably due to the low number of subjects participating in the study. Another critical point is related to different psychological fluctuation in aged persons and also their different nutrition status which must be further considered in future research.

4.1. Conclusion

Conclusively, an 8-Week of aerobic exercise program significantly improves the quality of life among the aged persons. Additional research with a greater number of subjects and different exercise protocols are required to make crucial decisions regarding the effectiveness of similar exercise programs on aged persons.

Acknowledgements
Footnote
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