Effect of Residence in Temporary Housing After the Great East Japan Earthquake on the Physical Activity and Quality of Life of Older Survivors

Association between evacuation and becoming overweight after the Great East Japan Earthquake: a 7-year follow-up of the Fukushima Health Management Survey

OBJECTIVES

Disaster evacuation increases the risk of becoming overweight or obese owing to lifestyle changes and psychosocial factors. This study evaluated the effect of evacuation on becoming overweight during a 7-year follow-up among residents of Fukushima Prefecture during the Great East Japan Earthquake.

STUDY DESIGN

This was a prospective cohort study.

METHODS

We analysed data collected from 18,977 non-overweight Japanese participants who completed the 'Comprehensive Health Checkup Program' and 'Mental Health and Lifestyle Survey', as part of the Fukushima Health Management Survey, between July 2011 and November 2012. An evacuation was defined as the moving out of residents of municipalities designated as an evacuation zone by the government or having a self-reported experience of moving into shelters or temporary housing. Follow-up examinations were conducted in March 2018 to identify patients who became overweight. Hazard ratios (HRs) and 95% confidence intervals (95% CIs) were calculated using a Cox proportional hazards regression model.

RESULTS

Among 15,875 participants (6091 men and 9784 women; mean age 63.0 ± 11.1 years) who received follow-up examination (mean follow-up, 4.29 years), 2042 (856 men and 1186 women) became overweight. Age-, baseline body mass index-, lifestyle-, and psychosocial status-adjusted HRs (95% CIs) for becoming overweight after evacuation were 1.44 (1.24-1.66) for men and 1.66 (1.47-1.89) for women.

CONCLUSION

Evacuation was associated with the risk of becoming overweight 7 years after the disaster. Thus, maintaining physical activity, healthy diet, and sleep quality and removing barriers to healthy behaviour caused by disasters, including anxiety concerning radiation, may prevent this health risk among evacuees.

Major Causes of Death among Older Adults after the Great East Japan Earthquake: A Retrospective Study

This retrospective study investigated the 3-year impact of the Great East Japan Earthquake (GEJE) of 2011 on deaths due to neoplasm, heart disease, stroke, pneumonia, and senility among older adults in the primarily affected prefectures compared with other prefectures, previous investigations having been more limited as regards mortality causes and geographic areas. Using death certificates issued between 2006 and 2015 (n = 7,383,253), mortality rates (MRs) and risk ratios (RRs) were calculated using a linear mixed model with the log-transformed MR as the response variable. The model included interactions between the area category and each year of death from 2010 to 2013. The RRs in the interaction significantly increased to 1.13, 1.17, and 1.28 for deaths due to stroke, pneumonia, and senility, respectively, in Miyagi Prefecture in 2011, but did not significantly increase for any of the other areas affected by the GEJE. Moreover, increased RRs were not reported for any of the other years. The risk of death increased in 2011; however, this was only significant for single-year impact. In 2013, decreased RRs of pneumonia in the Miyagi and Iwate prefectures and of senility in Fukushima Prefecture were observed. Overall, we did not find evidence of strong associations between the GEJE and mortality.

Development of nutrient-based nutritional standards for foodservice at shelters during disasters in the Republic of Korea

BACKGROUND/OBJECTIVES

In times of disaster, simplified and minimized nutritional standards are necessary for a quick response to provide nutritious relief food. This study aimed to develop nutrient-based nutritional standards for foodservice at shelters during disasters in the Republic of Korea (South Korea).

SUBJECTS/METHODS

The standards were developed in 2 phases. First, nutrients to be included in the standards were selected. Initial candidates were selected considering 3 aspects: preceding standards, insufficient intake during disasters, and inadequate intake among South Koreans. Final selection was made by excluding nutrients for 3 reasons: nutrients for which there is no deficiency concern in South Korea, nutrients whose intake data were not available, or nutrients whose values presented by Dietary Reference Intakes for Koreans are difficult to achieve based on the current diet among South Koreans. Second, the reference values of energy and the selected nutrients were calculated. The reference values for the entire population who were 1-year-old and over were calculated by multiplying the estimated energy requirements or the recommended nutrient intake and the proportion of each age and sex group. Respective reference values were also calculated for 4 different age groups (1-5, 6-11, 12-64, and ≥ 65-year-old).

RESULTS

The standards for the entire population were 2,000 kcal for energy, 55 g for protein, 650 µg retinol activity equivalents for vitamin A, 95 mg for vitamin C, 1.1 mg for thiamin, 1.3 mg for riboflavin, 14 mg niacin equivalents for niacin, 350 µg dietary folate equivalents for folic acid, 750 mg for calcium, and 11 mg for iron. Four additional standards corresponding to each age group were developed.

CONCLUSIONS

The nutritional standards during disasters were developed for South Korea, including energy and 9 nutrients with reference values for the entire population and 4 different age groups. The standards will contribute to maintaining the health of disaster evacuees in South Korea.

Association between low back pain and functional disability in the elderly people: a 4-year longitudinal study after the great East Japan earthquake

BACKGROUND

Functional disability is a major health issue in an aging population. Low back pain (LBP) is a common health concern that can lead to functional disability in the elderly; nonetheless, their association has not yet been clarified. This study aimed to examine the association between LBP and functional disability in the elderly, with a focus on its dose-dependent effects.

METHODS

This study used the 4-year longitudinal data of people living in disaster-affected areas after the Great East Japan Earthquake (aged ≧65, n = 914). LBP and physical function were assessed at 2, 4, and 6 years after the disaster. Multivariate logistic regression analyses were performed to assess the association between LBP and low physical function, as well as the effect of preceding LBP on the onset of low physical function.

RESULTS

LBP was significantly associated with low physical function, and the association became stronger as the duration of LBP increased. Adjusted odds ratios (95% confidence intervals) were 1.27 (0.79-2.06) in "< 2 years," 1.95 (1.01-3.77) in "≥2 years and <4 years," and 2.34 (1.35-4.06) in "≥4 years" (p for trend = 0.009). Additionally, preceding LBP was significantly associated with the onset of low physical function, and the effect became prominent as the duration of LBP increased. Adjusted odds ratios (95% confidence intervals) were 2.28 (1.19-4.37) in "< 2 years" and 2.82 (1.35-5.90) in "≥2 years" (p for trend = 0.003).

CONCLUSIONS

LBP is associated with physical disability among the elderly in a dose-dependent manner. Therefore, prevention and treatment of LBP are important for preventing functional disability.

Demographic Change of the Kawauchi Special Nursing Home Occupants in a Former Evacuation Area After the Nuclear Power Plant Accident: A Retrospective Observational Study

OBJECTIVE

This retrospective observational study aimed to look into the social demographic change of the occupants of a long-term care (LTC) facility that was constructed in 2015 as a restoration support after the Fukushima Daiichi nuclear power plant accident.

METHODS

The social demographic information during 2015-2021 of occupants in the Kawauchi Special Nursing Home was analyzed.

RESULTS

A total of 172 participants were included in the analysis. The number (proportion) of evacuees was 37 (69.8%) in 2015, then gradually decreased to 7 (31.8%) in 2018, yet increased to 21 (58.3%) in 2019. There were 121 occupants (70.4%) who were from Kawauchi Village and other municipalities of the former evacuation area.

CONCLUSION

The Kawauchi Special Nursing Home initially received people who hoped to return to the former evacuation zone; however, its role changed to receive people who became in need of LTC after returning to Kawauchi Village. The construction of LTC facilities in the former evacuation area may help enhance the local LTC service where returnees are rapidly aging.

Long-term care issues in a municipality affected by the great East Japan earthquake: A case of Katsurao Village, Fukushima prefecture

Information regarding the proposed measures addressing long-term care problems during disasters at a municipal level is scarce. Thus, this study reviewed the long-term care insurance measures taken in the Katsurao Village after the Fukushima nuclear accident and summarized the measures that municipalities can take against such issues in the future.

Home-visit rehabilitation in a repopulated village after the Fukushima nuclear disaster

Following the evacuation of areas affected by Japan's 2011 Fukushima Daiichi Nuclear Power Plant (FDNPP) accident, Kawauchi Village was one of the first municipalities repopulated. Although rehabilitation resources were limited, a healthcare facility near the municipality initiated home-visit rehabilitation in 2016. To the best of our knowledge, reports of home-visit rehabilitation in repopulated villages that were evacuated following a nuclear accident are lacking.This article describes a case study of home-visit rehabilitation in Kawauchi Village. The purpose of this study was to explore how users of home-visit rehabilitation services in Kawauchi Village perceive home-visit rehabilitation, and whether it had a positive impact on their daily life. A questionnaire survey was conducted, and their ability to perform activities of daily living was assessed, to understand the living conditions of the visiting-rehabilitation service users.We studied 10 rehabilitation-service users, with a mean age of 86.8 years, who had used the services for an average of 591.4 days. Themes that emerged from the open-ended questionnaire were "established exercise habits and improved physical functions," "the joy of returning to the village," "challenges in the mountainous areas" and "changes in relationships due to the earthquake or evacuation."In conclusion, home-visit rehabilitation was successfully implemented in the repopulated village, and helped maintain the users' physical functions. This may thus be a viable choice for rehabilitation care in repopulated areas after disasters.

The association between psychological distress and risk of incident functional disability in elderly survivors after the Great East Japan Earthquake: The mediating effect of lifestyle and bodily pain

BACKGROUND

We previously reported that psychological distress was associated with an increased risk of functional disability. However, the mechanism of the association remains unclear. Our aim was to estimate the mediating effect of lifestyle and bodily pain on the association among elderly survivors after the Great East Japan Earthquake.

METHODS

The study population comprised 1037 residents aged ≥ 65 years. The baseline surveys (exposure and mediators) were conducted in 2011. We classified participants into three categories according to their Kessler 6 score (low: 0-9, moderate: 10-12, and high: 13-24) and defined functional disability as certification for long-term care insurance in Japan. The Cox proportional hazards model was used to calculate the hazard ratios (HRs) and 95% confidence intervals (CIs) for incident functional disability according to Kessler 6 categories and explored the mediating effects of lifestyle and bodily pain on the association.

RESULTS

During approximately 8 years of follow-up, we documented 271 incident cases of functional disability. Compared with those in the low distress group, the multivariate adjusted HR for incident functional disability was 1.95 (95% CI 1.21-3.13) for those in the high distress group. Time spent walking, going out, and bodily pain significantly mediated the association between psychological distress and incident functional disability by 10.2%, 10.5%, and 10.3% for the high distress group, respectively.

LIMITATIONS

We did not consider unmeasured confounders and use of appropriate medication.

CONCLUSIONS

The evaluation and treatment of bodily pain as well as promotion of active lifestyle would be important for preventing disability among disaster survivors.

Association of Instrumental Activities of Daily Living, Physical Function, and Mental Health among Older Returnees after the Fukushima Daiichi Nuclear Power Station Accident

The 2011 Great East Japan Earthquake and consequent Fukushima Daiichi Nuclear Power Station accident caused a large-scale evacuation, generating various health issues. Although residents gradually returned, their independence of daily living and associated factors remain unknown. This study examines the hypothesis that physical and mental status are associated with the instrumental activities of daily living (IADL) of older returnees (65 years and above) after the disaster. Older returnees to Kawauchi Village, Fukushima Prefecture, located 20–30 km southwest of the power plants, were recruited. IADL was assessed using the Japan Science and Technology Agency Index of Competence, physical function via the 30-s chair stand test, and mental health via the Japanese version of the World Health Organization Five Well-Being Index. To examine the association of IADL and possible factors, a t-test or Pearson’s product-moment correlation coefficient was used, stratified by sex. The data of 29 participants (75.5 ± 7.4 years, 19 female) were analyzed. Physical function was associated with IADL in females. Mental health was associated with IADL in males and females. Taking measures to strengthen physical function in females, as well as to improve mental health in both sexes, for enhancing IADL ability could be beneficial.

Association of Perceived Environment and Physical Activity in Older Adults After the Great East Japan Earthquake

The aim of this study was to examine the association between perceived environment and physical activity among older adults in Fukushima Prefecture after the 2011 Great East Japan Earthquake and the impact of evacuation. Questionnaires were distributed to individuals aged 65 years and older from October to November 2018. Perceived environment was assessed using a five-item questionnaire on home fitness equipment, access to facilities, neighborhood safety, enjoyable scenery, and frequency of observing others exercising. Physical activity, assessed via the Physical Activity Questionnaire for Elderly Japanese, was segregated into levels based on the median score. Data from 249 participants (74.2 ± 6.9 years) were analyzed. A logistic regression analysis found that the unenjoyable Scenery × Residing in restoration public housing interaction (odds ratio = 3.87, 95% confidence interval = [1.20, 12.46]) was significant. The association between enjoyable scenery and physical activity varied according to whether the participants had experienced evacuation or not.

Effect of temporary housing on incidence of diabetes mellitus in survivors of a tsunami-stricken area in 2011 Japan disaster: a serial cross-sectional RIAS study

The association between incidence of diabetes mellitus (DM) and living conditions has not been studied after natural disasters. We compared the incidence of DM between individuals living in temporary housing (TH) and those living in other types of accommodation (non-TH) five years after the 2011 Great East Japan Earthquake. Longitudinal follow-up was conducted from 2011 to 2015 in a cohort of 7,491 residents of coastal communities in Iwate Prefecture directly impacted by the 2011 disaster (mean age, 61.6 years; men, 36.0%). We calculated the odds ratio of new onset of DM in the TH group (n = 2,372) compared with the non-TH group (n = 5,119) using discrete-time logit models stratified by sex and age classes (64 years or younger and older than 65 years). The TH group showed a significantly higher odds ratio (OR) for DM in men aged 64 years or younger (OR [95% confidence interval (CI)], 1.71 [1.03–2.85]; P-value = 0.040). In women, living conditions were not significantly associated DM. Survivors relocated to TH appeared to be at an increased risk of new onset DM.

Onset and remission of common mental disorders among adults living in temporary housing for three years after the triple disaster in Northeast Japan: comparisons with the general population

Background

People living in temporary housing for long periods after a disaster are at risk of poor mental health. This study investigated the post-disaster incidence and remission of common mental disorders among adults living in temporary housing for the 3 years following the 2011 Great East Japan Earthquake.

Methods

Three years after the disaster, face-to-face interviews were conducted with 1089 adult residents living in temporary housing in the disaster area, i.e., the shelter group, and a random sample of 852 community residents from non-disaster areas of East Japan. The World Health Organization Composite International Diagnostic Interview was used to diagnose DSM-IV mood, anxiety, and alcohol use disorders. Information on demographic variables and disaster experiences was also collected.

Results

Response rates were 49 and 46% for the shelter group and the community residents, respectively. The incidence of mood/anxiety disorder in the shelter group was elevated only in the first year post-disaster compared to that of the general population. The rate of remission for mood and anxiety disorders was significantly lower in the shelter group than in the community residents. The proportion seeking medical treatment was higher in the shelter group.

Conclusions

The onset of common mental disorders increased in the first year, but then levelled off in the following years among residents in temporary housing after the disaster. Remission from incident post-disaster mental disorders was slower in the shelter group than in the general population. Post-disaster mental health service could consider the greater incidence in the first year and prolonged remission of mental disorders among survivors with a long-term stay in temporary housing after a disaster.

Musculoskeletal pain and new-onset poor physical function in elderly survivors of a natural disaster: a longitudinal study after the great East Japan earthquake

Background

Functional disability is a significant problem after natural disasters. Musculoskeletal pain is reported to increase after disasters, which can cause functional disability among survivors. However, the effects of musculoskeletal pain on functional decline after natural disasters are unclear. The present study aimed to examine the association between musculoskeletal pain and new-onset poor physical function among elderly survivors after the Great East Japan Earthquake.

Methods

A longitudinal study was conducted on survivors aged ≥65 years at three and 4 years after the Great East Japan Earthquake. A total of 747 persons were included in this study. Physical function was assessed using the Kihon Checklist. New-onset poor physical function was defined as low physical function not present at 3 years but present at 4 years after the disaster. Knee, hand or foot, low back, shoulder, and neck pain was assessed using a self-reported questionnaire and was defined as musculoskeletal pain. Musculoskeletal pain at 3 years after the disaster was categorized according to the number of pain regions (0, 1, ≥ 2). Multiple logistic regression analyses were performed to calculate the odds ratio (OR) and 95% confidence interval (95% CI) for new-onset poor physical function due to musculoskeletal pain.

Results

The incidence of new-onset poor physical function was 14.9%. New-onset poor physical function was significantly associated with musculoskeletal pain. Compared with “0” musculoskeletal pain region, the adjusted ORs (95% CI) were 1.39 (0.75–2.58) and 2.69 (1.52–4.77) in “1” and “≥ 2” musculoskeletal pain regions, respectively (p for trend = 0.003).

Conclusions

Musculoskeletal pain is associated with new-onset poor physical function among elderly survivors after the Great East Japan Earthquake. Monitoring musculoskeletal pain is important to prevent physical function decline after natural disasters.

Living in the Restoration Public Housing after the Great East Japan Earthquake Correlates with Lower Subjective Well-Being of Older Adults

We aimed to (1) describe the subjective well-being (SWB) of older residents in Fukushima Prefecture seven years and seven months after the Great East Japan Earthquake (GEJE) and examine the effect of relocation to the restoration public housing (RPH) on SWB, social capital, and health indicators; and (2) investigate the association between social capital and SWB. Questionnaires were administered to collect data of both RPH and non-RPH residents (≥65 years). Respondents' SWB was collected via the Japanese version of the World Health Organization Five Well-Being Index. Additionally, residents' social capital (trust, reciprocity, and participation), physical activity level, social network, functional health, history of chronic disease, and demographic data were collected. We analyzed 101 responses (valid response rate: approximately 34%) from RPH and 158 (53%) from non-RPH residents. SWB was lower in RPH compared to non-RPH residents but not statistically significant. Older RPH residents may demonstrate lower social capital and health indicators after the GEJE. Mistrust was found to be positively associated with low SWB in RPH residents. Future studies should examine the effectiveness of support for enhancing the trust of older RPH residents regarding, for example, the involvement of scientists-including medical professionals-in risk communications in promoting SWB.

Efficacy of group intervention involving physical activity on subjective well-being of elderly returnees after evacuation following the Great East Japan Earthquake

AIM

In general, physically activity contributes to better subjective well-being (SWB) in the elderly. However, the physical activity level of older people who experienced relocation after the Great East Japan Earthquake has been reported to be low, possibly leading to low SWB. This study aimed to examine the efficacy of group intervention involving physical activity on SWB among older returnees after the Great East Japan Earthquake.

METHODS

The participants were randomly allocated to an intervention group (4 men, 10 women) or a control group (7 women). Participants in the intervention group attended a series of weekly classes over eight weeks to encourage daily physical activity, whereas participants in the control group received no intervention. SWB, the primary outcome, was assessed by the World Health Organization Five Well-Being Index.

RESULTS

Median variation in the World Health Organization Five Well-Being Index scores at 3 months from the baseline in the intervention and control groups was -1.0 and -2.0 points, respectively; the difference was borderline significant (P = 0.06). There was no significant difference between the groups in the median of variation in muscle strength (P = 0.79) or mobility (P = 0.77) at 3 months.

CONCLUSION

The intervention might prevent deterioration in participants' SWB. Further studies involving older returnees with poor physical activity and/or sedentary lifestyle may be beneficial for health promotion in the area.