Fragility, fear of falling, physical activity and falls among older persons: some theoretical considerations to interpret mediation

BACKGROUND: In their letters to the editor, Lacherez et al. [Lacherez, P.F., Wood, J.M., Kerr, G.K., 2007. Does activity level mediate or suppress the association between fear of falling and falls? Prev. Med. 31; (Electronic publication ahead of print)] and Hafeman and Schwartz [Hafeman, D., Schwartz, S., 2007. Assessing mediation: The necessity of theoretical considerations. Prev. Med. 26; (Electronic publication ahead of print)] questioned the correctness of using the term 'mediation' in our paper [Wijlhuizen, G.J., Jong, R. de, Hopman-Rock, M., 2007. Older persons afraid of falling reduce physical activity to prevent outdoor falls. Prev. Med. 44, 260-264.]. In this paper, we concluded that (outdoor) Physical activity mediates the relationship between Fear of falling and outdoor Falls. We investigated whether the term 'inconsistent mediation' might be a more appropriate term to use in this context. METHODS: Based on literature, we describe the relationship between fear of falling, physical activity, and falls within a causal model. RESULTS: Two causal pathways between Fear and Falls exist, with the causal pathway going from Fear of falling via Physical activity to Falls counteracting (is inconsistent with) the causal pathway going from Fear of falling via Hesitancy to Falls. CONCLUSION: The term 'inconsistent mediation' might be more appropriate to describe the causal relationships between Fear of falling, Falls, and Physical activity.     

The 24-h distribution of falls and person-hours of physical activity in the home are strongly associated among community-dwelling older persons

OBJECTIVES: Most research on falls among older persons focuses on health-related factors that affect the ability to maintain balance. The objective of the study is to determine the association between physical activity and occurrence of falls among community-dwelling older persons. METHODS: The distribution of falls and person-hours of physical activity in the home over 24 h was compared. The falls data (n=501) were extracted from a pooled dataset of three follow-up studies conducted between 1994 and 2005 (n=3587). The 1995 Dutch National Time-Budget Survey provided hour-by-hour information on activities performed by older individuals (n=459) in the home; this sample was representative for the Netherlands. The association between the 24-h distribution of falls and physical activity and the risk of falling (the ratio between the distribution of falls and physical activity) were determined. Participants were community-dwelling older persons aged 65 years and older. RESULTS: More physical activity was positively associated with more falls (Spearman correlation=.89, p<.000). The risk of falling at night (1 a.m.-6 a.m.) was almost eight times higher compared to 7 a.m.-12 p.m. CONCLUSIONS: Physical activity is strongly associated with the number of falls in the home, measured over 24 h. Older persons may be at increased risk of falling if they are encouraged to become more physically active, or if they often get out of bed at night. Thus in addition to health-related factors, changes in level of physical activity should also be taken into account when estimating a person's risk of falling.     

Differential risk factor profiles for indoor and outdoor falls in older people living at home in Nottingham, UK

The objectives of this work were: to estimate the incidence of falls within an at-risk group of community-dwelling elderly people; to assess the risk factors associated with incident falls; to examine the effects of incident falls on survival. A random sample of 1042 community-dwelling older people in Nottingham (UK) were interviewed in 1985 and survivors re-interviewed at 4-year follow-up. The at-risk group was defined as survivors who had not fallen in the year prior to the baseline interview (n=444). One-year fall recall was assessed using a questionnaire and included physical health, mobility, prescribed drugs and time spent walking. Body-weight and handgrip strength were measured. Eight-year post-fall mortality was recorded. In 1989 117 new fallers were identified. These people fell a total of 233 times in the year prior to re-interview (incidence rate: 524.8 per 1000 person-years at risk; 95% confidence intervals (CI): 473.3–576.3). People aged less than 75 were more likely to fall outdoors than people aged 75and over (2=5.715, df=1, p=0.017). Risk factors associated with falling were: being less healthy (odds ratio (OR): 0.55; p=0.052); having a walking speed in the range stroll/very slow/non-ambulant compared with normal/brisk/fast (OR: 1.99; p<0.01); and number of prescribed drugs (OR: 1.30; p=0.01). When analysed separately, indoor and outdoor falls presented differential risk profiles, with evidence that indoor falls were associated with frailty, while outdoor falls were associated with compromised health status in more active people. In 8-year post-fall monitoring, multiple (3+) fallers and indoor fallers showed a significant excess mortality. The differences in risk factors for, and prognoses following, indoor and outdoor falls, emphasise the complex interactions between intrinsic and extrinsic factors associated with falling among older people.     

Outdoor falls among middle-aged and older adults: a neglected public health problem

Objectives. Although risk factors for indoor falls among older individuals have been well studied, little is known about the etiology of outdoor falls. We examined risk factors for outdoor falls among middle-aged and older adults.

Methods. We analyzed data on the most recent fall during the past year among participants aged 45 years and older in the control group (N=2193) of a case–control study of fractures. The study was conducted at 5 Northern California Kaiser Permanente Medical Centers between 1996 and 2001.

Results. Falls occurred outdoors more often than indoors among most age groups. Study participants who reported more leisure-time physical activity had a higher risk for outdoor falls, and participants who were in poorer health had a greater risk for indoor falls. Most outdoor falls (73%) were precipitated by environmental factors, such as uneven surfaces and tripping or slipping on objects, and usually occurred on sidewalks, curbs, and streets. Walking (47.3%) was the most common fall-related activity.

Conclusions. Outdoor falls among adults aged 45 years and older were frequently attributable to modifiable environmental factors. With the widespread promotion of active lifestyles among older people, improvements in their outdoor environment are urgently needed.

     

Nutritional status of school-age children - A scenario of urban slums in India

Objectives

This article aims at describing, in a Belgian town, the frequency of the fear of falling and of subsequent activity restriction among non-institutionalised people aged 65 years and over, and at identifying persons affected by these two issues.

Methods

Cross-sectional survey conducted in Fontaine l'Evêque (Belgium) in 2006, using a self-administered questionnaire.

Results

The participants could fill in the questionnaire on their own or with the help of a third party if needed. The latter were not taken into account in this article. Analyses covered 419 questionnaires. Fear of falling and activity restriction were reported by, respectively, 59.1% and 33.2% of participants. They were more frequent among fallers but also affected non-fallers. In logistic regression analyses: gender, the fact of living alone and the number of falls were significantly associated with fear of falling; gender, age and the number of falls were significantly associated with activity restriction.

Conclusions

Our study, despite various limitations, shows the importance of fear of falling and of subsequent activity restriction among older people, among fallers as well as among non-fallers. It also provides information, though limited, concerning persons affected by these two issues in Belgium, and in other contexts as well. Given the ageing of our populations, it is important to take these problems into account when caring for older people.     

Crime,physical activity and outdoor recreation among Latino adolescents in Chicago

Purpose

The purpose was to examine how fear of crime, crime victimization, and perceived level of community incivilities are related to physical activity participation and outdoor recreation among Latino adolescents.

Method

The study utilized a mixed methods approach that included 25 qualitative interviews and 390 school-based surveys collected from youth across three schools in Little Village, Chicago, Illinois.

Results

Results showed that Latino adolescents who expressed greater fear of crime also engaged in less physical activity and outdoor recreation. There was no association between crime victimization and physical activity and outdoor recreation. Those who perceived greater levels of community incivilities also engaged in less outdoor recreation, but perception of incivilities had no significant association with physical activity levels. Interview data revealed most of the children believed crime was a serious problem in their neighborhood and it impacted their ability to be physically active and play outside.

Conclusions

Fear of crime was related to lower physical activity and outdoor recreation. It is imperative that communities provide safe environments for children to be active. Increasing police and adult presence in parks and school grounds is recommended. Moreover, efforts must be made to reduce the gang problems in Latino communities.     

Educational intervention to reduce falls and fear of falling in patients after fragility fracture: results of a controlled pilot study

OBJECTIVES: Falls and fear of falling are a major health problem. We sought to determine the effectiveness of an educational intervention in reducing fear of falling and preventing recurrent falls in community-dwelling patients after a fragility fracture. METHODS: One hundred two community-dwelling patients aged 50 years or older who fell and sustained a wrist fracture and were treated at Emergency Departments in Edmonton, Alberta, Canada (2001-2002) were allocated to either standardized educational leaflets and post-discharge telephone counseling regarding fall prevention strategies ("intervention") or attention-controls ("controls"). Main outcomes were fear of falling and recurrent falls 3 months after fracture. RESULTS: Mean age was 67 years and most patients were female (80%). The majority of falls (76%) leading to fracture occurred outdoors. Three months post-fracture, almost half of patients (48%) reported increased fear of falling and 11 of 102 (11%) reported falling again. The intervention did not reduce the fear of falling (43% had increased fear vs. 53% of controls, adjusted P value=0.55) or decrease recurrent falls (17% fell vs. 5% of controls, adjusted P value=0.059) within 3 months of fracture. CONCLUSIONS: An educational intervention undertaken in the Emergency Department was no more effective than usual care in reducing fear of falling or recurrent falls in community-dwelling patients. Future strategies must address a number of dimensions beyond simple education.     

Physical exercises to prevent falls: a clinical trial with institutionalized elderly in the city of Goiânia in Brazil

The scope of this study was to evaluate an intervention program with group physical exercises to prevent falls in the elderly in long-term care institutions. This is a non-randomized clinical trial conducted with 20 institutionalized elderly people in the city of Goiania in Brazil. The interventions occurred over the period of five months, though the proposed exercise program was based on earlier studies. Standardized measures were used to assess falls, balance and gait, muscle strength, flexibility and fear of falling. After the period of 12 months from the start of intervention there was a significant reduction in the number of falls (p = 0.046). Based on the program, significant differences were observed for point allocation of the maneuvers of balance (p = 0.001), total scores of the maneuvers of balance and gait (p = 0.007), muscle strength of hand grip (p = 0.001) and of lower limbs (p < 0.001), flexibility of movement of shoulder flexion (p = 0.001). The intervention using an exercise program proved to be adequate, albeit insufficient to improve the gait, multiple joint flexibility of the spine and hip and fear of falling, or to reduce the number of elderly people who suffered falls from the beginning of the study.     

Characteristics of urban community-dwelling elderly women with multiple symptoms of the geriatric syndrome and related factors

OBJECTIVE: The present study was performed to comprehensively investigate the prevalence of multiple symptoms of the geriatric syndrome, characteristics and related factors in urban community-dwelling elderly women. METHODS: Among 669 women aged 70 years and above living in 5 areas of Itabashi-ku, who attended the Otassha Kenshin (comprehensive health check for the elderly) in November 2004 and gave consent to participate in this study, 668 had no missing data and their interview and physical fitness data were analyzed. The criteria for the geriatric syndrome were: (1) functional decline: a score of 10 points or below for the 13 items of the Tokyo Metropolitan Institute of Gerontology (TMIG) index of competence; (2) falls: "have fallen" once or more in the last year; and (3) urinary incontinence: frequency of urine leakage of "1 to 3 times in a month" in daily life. The interview and physical fitness data were compared between healthy persons, persons with one symptom and persons with multiple symptoms. Multiple logistic regression models were used to analyse related factors. RESULTS: The prevalence of multiple geriatric syndromes was 15.3%; comprising 2.2% with "functional decline+falls", 6.0% with "functional decline+urinary incontinence", 5.1% with "falls+urinary incontinence", and 2.0% with "functional decline+falls+urinary incontinence". The group reporting multiple symptoms had poor self-rated health, had a high percentage currently taking three or more medications, had a fear of falling and had a significantly (P < 0.05) higher likelihood of a history of stroke and urinary disease. In addition, the group with multiple symptoms were older, and had significantly (P < 0.05) poorer results for grip strength, usual walking speed, maximum walking speed, functional reach, knee extension strength, and one leg standing time with eyes open. Within this group, the "functional decline+falls" subgroup had the lowest level of physical fitness. Analysis of factors related to the presence (1) or absence (0) of multiple symptoms identified fear of falling and usual walking speed as two significant variables. CONCLUSION: This study showed that: (1) physical fitness is significantly lower in the group with multiple symptoms of the geriatric syndrome compared with healthy persons, and was the lowest in the subgroup with "functional decline+falls"; and (2) fear of falling and usual walking speed were two factors related to multiple geriatric syndromes. These results suggest directions for future intervention strategies.     

What is the evidence of the experience of having a fall across the life course? A qualitative synthesis

BackgroundAlleviating the economic and human impacts of falls and fear of falling are critical health and social care issues. Despite some proven effectiveness of a number of falls prevention intervention programmes, uptake remains low and attrition high. There is a need for greater understanding of social, cultural and individual, life course positioning of falling, actual or perceived.ObjectiveTo address the question: what is the evidence of the experience of having a fall across the life course?MethodA qualitative evidence synthesis with key electronic databases searched from 1990 to 2011 using terms related to the experience of falls and falling. Selected papers presented data from the perspective of the person who had fallen. Synthesis included collaborative coding of ‘incidents’ related to falling, theoretical sampling of studies to challenge emerging theories, and constant comparison of categories to generate explanations.ResultsThe initial focus was to access and assess the evidence for the experiences of a fall across the life course but the authors' systematic search revealed that the vast majority of the published literature focuses on the experience of a fall in later life. Only 2 of the 16 studies included, provided perspectives of falling from a life stage other than that of older adults. However older adults' perceptions of their falls experiences are likely to be influenced by lifelong attitudes and beliefs about falling and older age. Synthesis identified that a falls incident or fear of falling induces explicit or implicit ‘Fear.’ Consequences are related to notions of ‘Control’ and ‘Social standing.’ Recovery work involves ‘Adaptation,’ ‘Implications,’ ‘Social standing’ and ‘Control.’ ‘Explanation’ is sought.ConclusionsHow and why people make sense of falling across the life course should have positive impacts on developing falls intervention programmes that people will want to engage with and adhere to.     

Socio-demographic, health-related and psychosocial correlates of fear of falling and avoidance of activity in community-living older persons who avoid activity due to fear of falling

Background  

Fear of falling and avoidance of activity are common in old age and are suggested to be (public) health problems of equal importance to falls. Earlier studies of correlates of fear of falling and avoidance of activity did hardly differentiate between severe and mild levels of fear of falling and avoidance of activity which may be relevant from clinical point of view. Furthermore, most studies focused only on socio-demographics and/or health-related variables and hardly incorporated an extensive range of potential correlates of fear of falling including psychosocial variables. This study analyzes the univariate and multivariate associations between five socio-demographic, seven health-related and six psychosocial variables and levels of fear of falling and avoidance of activity in older persons who avoid activity due to fear of falling.     

Automatic fall detectors and the fear of falling

We studied the effect of automatic fall detection units on the fear of falling. Participants were community alarm users living in the community aged over 75 years or those aged 60-74 years who had experienced a fall in the previous six months. Of those approached, 31% consented to take part; the main reason given for potential participants declining involvement was that they were happy with the technology they already had. Subjects were assigned to a control group (n = 21) or intervention group (n = 34) based on age, the number of self-reported falls in the previous six months and their score on the self-administered Falls Efficacy Scale (FES), which measures fear of falling on a scale of 0-100, with higher scores indicating less fear. The monitoring period lasted a mean of 17 weeks (SD 3.1). There was no significant difference between the intervention and control groups in their mean ratings of fear of falls (40.3 vs 37.5, difference 2.8, 95% CI 6.2 to 11.8), health-related quality of life or morale. Differences in fear of falling between an intervention subgroup who wore their detector at least occasionally (62%) and those who did not (38%) suggested that some people may benefit from a fall detector while others may lose confidence if they are provided with one. Most users who wore their detectors at least occasionally felt more confident and independent and considered that the detector improved their safety.     

Evaluating an intervention to reduce fear of falling and associated activity restriction in elderly persons: design of a randomised controlled trial [ISRCTN43792817]

Background  

Fear of falling and associated activity restriction is common in older persons living in the community. Adverse consequences of fear of falling and associated activity restriction, like functional decline and falls, may have a major impact on physical, mental and social functioning of these persons. This paper presents the design of a trial evaluating a cognitive behavioural group intervention to reduce fear of falling and associated activity restriction in older persons living in the community.     

Heterogeneity of Falls Among Older Adults: Implications for Public Health Prevention

Objectives. We examined risk factors for falls among older people according to indoor and outdoor activity at the time of the fall and explored risk factors for seriously injurious falls.Methods. Data came from MOBILIZE Boston, a prospective cohort study of 765 community-dwelling women and men, mainly aged 70 years or older. Over 4.3 years, 1737 falls were recorded, along with indoor or outdoor activity at the time of the fall.Results. Participants with poor baseline health characteristics had elevated rates of indoor falls while transitioning, walking, or not moving. Healthy, active people had elevated rates of outdoor falls during walking and vigorous activity. For instance, participants with fast, rather than normal, gait speed, had a rate ratio of 7.36 (95% confidence interval [CI] = 2.54, 21.28) for outdoor falls during vigorous activity. The likelihood of a seriously injurious fall also varied by personal characteristics, activity, and location. For example, the odds ratio for serious injury from an outdoor fall while walking outside compared to inside a participant’s neighborhood was 3.31 (95% CI = 1.33, 8.23).Conclusions. Fall prevention programs should be tailored to personal characteristics, activities, and locations.Falls in older people are a major public health problem. In the United States, about one third of community-dwelling people aged 65 years or older fall each year, with about 10% of falls resulting in serious injury.1–3 These falls and injuries can lead to disability, loss of independence, and fear of falling.1 Several fall prevention strategies have been developed, most of which emphasize strength, balance, and gait training; use of assistive devices; treatment of medical conditions; reduction in the use of certain medications; improvement in vision; and elimination of home hazards.1–6 However, about 50% of falls in community-dwelling older people occur outdoors, mainly in healthy, active people.7–13 Knowing which people are likely to fall under what circumstances should help prevention efforts by enabling different recommendations to be emphasized to different people, a strategy recommended in the 1990s by Northridge et al.14,15 and Speechley and Tinetti,16 but seldom implemented as policy.Previous studies have reported on people’s activities at the time they fall, with walking by far most frequent.9,17–19 However, only limited data are available on whether certain personal characteristics affect the likelihood of falls during specific activities, and on which combinations of fall-related activities, personal characteristics, and location are most likely to result in serious injury among those who fall.14,17Our objectives were (1) to examine whether particular personal characteristics (e.g., demographic, lifestyle, and health attributes; functional and cognitive status; fall history) are associated with falls during certain indoor and outdoor activities and (2) to explore, with smaller numbers of events, risk factors for serious injury from falls according to personal characteristics, activity, and location. Such information can contribute to the development of more effective public health prevention strategies tailored to specific groups of people and activities.     

Relationship between Nutrition-Related Problems and Falls in Hemodialysis Patients: A Narrative Review

Falls are a social problem that increase healthcare costs. Hemodialysis (HD) patients need to avoid falling because fractures increase their risk of death. Nutritional problems such as frailty, sarcopenia, undernutrition, protein-energy wasting (PEW), and cachexia may increase the risk of falls and fractures in patients with HD. This review aimed to summarize the impact of frailty, sarcopenia, undernutrition, PEW, and cachexia on falls in HD patients. The reported global incidence of falls in HD patients is 0.85–1.60 falls per patient per year. HD patients fall frequently, but few reports have investigated the relationship between nutrition-related problems and falls. Several studies reported that frailty and undernutrition increase the risk of falls in HD patients. Nutritional therapy may help to prevent falls in HD patients. HD patients’ falls are caused by nutritional problems such as iatrogenic and non-iatrogenic factors. Falls increase a person’s fear of falling, reducing physical activity, which then causes muscle weakness and further decreased physical activity; this cycle can cause multiple falls. Further research is necessary to clarify the relationships between falls and sarcopenia, cachexia, and PEW. Routine clinical assessments of nutrition-related problems are crucial to prevent falls in HD patients.     

Don't let the patient with Parkinson's disease fall!

Three patients with a hypokinetic-rigid syndrome, a woman aged 69 years and two men aged 62 and 67 years, were admitted because of frequent falling. In two patients Parkinson's disease was diagnosed, the third had progressive supranuclear palsy. Balance impairment and falls typically emerge late in the course of Parkinson's disease. Falls can have dramatic physical consequences, such as (hip) fractures, and often induce a fear of additional falls which further impairs mobility and social contacts. The pathophysiology of falls in Parkinson's disease is complex and appears to result from both impaired balance regulation and commonly occurring balance disturbances (due to the shuffling gait and dyskinesias). Balance impairment often responds insufficiently to pharmacological treatment. Aspecific measures such as physical therapy, walking aids and reduction of domestic hazards can reduce the number of falls. Because patients often fail to voluntarily report their falls, physicians must actively pay attention to balance impairment in Parkinson's disease.     

Physical activity among elderly people in a city population: the influence of neighbourhood level violence and self perceived safety

STUDY OBJECTIVE: To study the associations between neighbourhood level violence/fear of violence and physical activity among elderly people, accounting for somatic health. DESIGN: Self reported data from the Oslo health study, a cross sectional study conducted in 2000, were linked with sociodemographic and social security data from Statistics Norway. A multilevel regression analysis was conducted by MlwiN using contextual level variables provided by the Oslo City Council. SETTING: Oslo, Norway. PARTICIPANTS: 3499 inhabitants aged 74/5 (53.2% of all invitees). MAIN RESULTS: 20.5% of the elderly were physically active less than one hour a week. Somatic health was clearly associated with physical activity among both men and women. Neighbourhood level violence was associated with physical activity only for men, while fear of violence was only associated with physical activity for women. Differences in somatic health did not explain differences in physical activity between neighbourhoods. These differences were explained by socioeconomic variables, and neighbourhood level violence/fear of violence. CONCLUSIONS: In a sample of presumably healthy 75/76 year olds in Oslo, the associations between neighbourhood level violence and physical activity (among men), and fear of violence and physical activity (among women), are of the same sizes as those between somatic health and physical activity. These two dimensions of violence have, in contrast with somatic health, an explanatory function in exploring differences in physical activity between neighbourhoods in Oslo.     

Asking older people about fear of falling did not have a negative effect

BACKGROUND AND OBJECTIVE: To assess whether completing a questionnaire on risk of falling could affect outcome measures: fear of falling, reported falls, and health service contacts in older people (panel conditioning). METHODS: We used a postal questionnaire to assess the effect on falls risk of implementing falls injury prevention guidelines within a single locality in outer London, UK. We compared responses for the baseline and 6-month follow-up surveys with those for a fresh survey. The latter was sent to a new pool of subjects drawn from the same population, and was sent only once; timing coincided with the follow-up survey. RESULTS: At baseline, we received 498 responses for 1,000 (50%) surveys sent; of these, 358 (72%) subsequently returned the follow-up survey. For the fresh survey, we received 1,261 out of 2,000 (61%) responses to the fresh survey. The odds ratio for the effect of panel conditioning on fear of falling was 0.92 (95% confidence interval CI = 0.64-1.33), within our predefined limit for equivalence. Odds ratios for the effect on reported falls and health service contacts were 0.87 (95% CI = 0.59-1.29) and 0.75 (95% CI = 0.55-1.02), respectively. CONCLUSION: The proportions of subjects who feared falling in the follow-up survey and in the fresh survey were equivalent. Reduced reporting of falls and health service use in the follow-up survey suggest that the potential for panel effects cannot be ignored.     

The relationship between physical activity facility proximity and leisure-time physical activity in persons with spinal cord injury

BackgroundWithin the general able-bodied population, proximity of one's home to physical activity facilities is modestly associated with physical activity behavior. Currently, no research has examined whether facility proximity is related to physical activity among persons living with disabilities.ObjectiveTo examine (1) the level of agreement between perceived and actual proximity to accessible physical activity facilities and (2) the relationship between facility proximity (perceived and actual) and leisure-time physical activity (LTPA) among persons with spinal cord injury (SCI). It was hypothesized that (1) perceived and actual proximity measures would exhibit low agreement and (2) a small, positive relationship would emerge between proximity (perceived and actual) and LTPA.MethodsData from 50 Ontario residents living with SCI (70% male; 52% tetraplegia) were collected for proximity and LTPA. Perceived facility proximity was determined by a self-report “YES” versus “NO” presence measure, while actual facility proximity was assessed using Geographical Information Systems. An SCI-specific instrument, the PARA-SCI, was used to measure LTPA.ResultsLow agreement levels were found between perceived and actual proximity. LTPA status (active versus inactive) was shown to moderate the relationship, with higher agreement levels found for participants who reported engaging in mild or heavy LTPA versus their inactive counterparts, but only for the 30-minute wheeling boundary. Contrary to hypothesis, people living within a 30-minute wheel from an accessible facility were less likely to engage in heavy LTPA than were people who did not have an accessible facility located within a 30-minute wheel. No significant associations were found between LTPA and perceived proximity.ConclusionsLiving in close proximity to a facility that provides accessible programming and equipment does not necessarily translate into greater physical activity behavior.