Exercise Opportunities Research Articles

Comparison of Least Squares Monte Carlo Methods with Applications to Energy Real Options

Least squares Monte Carlo (LSM) is a state-of-the-art approximate dynamic programming approach used in financial engineering and real options to value and manage options with early or multiple exercise opportunities. It is also applicable to capacity investment and inventory/production management problems with demand/supply forecast updates arising in operations and hydropower-reservoir management. LSM has two variants, referred to as regress-now/later (LSMN/L), which compute continuation/value function approximations (C/VFAs). We provide novel numerical evidence for the relative performance of these methods applied to energy swing and storage options, two typical real options, using a common price evolution model. LSMN/L estimate C/VFAs that yield equally accurate (near optimal) and precise lower and dual (upper) bounds on the value of these real options. Estimating the LSMN/L C/VFAs and their associated lower bounds takes similar computational effort. In contrast, the estimation of a dual bound using the LSML VFA instead of the LSMN CFA takes seconds rather than minutes or hours. This finding suggests the use of LSML in lieu of LSMN when estimating dual bounds on the value of early or multiple exercise options, as well as of related capacity investment and inventory/production policies.

Characterizing Social and Recreational Programming in Assisted Living.

The objectives of this three-phased investigation were to (1) characterize existing recreational programming opportunities for tenants residing in assisted living (AL) and (2) gather perceptions on factors influencing activity program planning and delivery. Using an integrated knowledge translation framework during a one-year collaboration, we targeted 51 publicly funded AL sites from two health authorities in British Columbia. We conducted an activity calendar review, staff survey, and interactive symposia to identify factors that enabled or restricted recreational programming. From the information obtained, we determined that all AL sites delivered recreational programming. Although exercise and physical activity opportunities were perceived as having high importance, most activities were social. Staff reported confidence in delivering this type of programming and believed it met the holistic needs of tenants, including their mental well-being, and fostered a sense of community. Future avenues for increasing physical activity of AL tenants should address individual, site, and organizational characteristics.

An Analysis On Usage Preferences Of Learning Objects And Learning Object Repositories Among Pre-Service Teachers

The purpose of the study is to investigate how pre-service teachers benefit from learning objects repositories while preparing course content. Qualitative and quantitative data collection methods were used in a mixed methods approach. This study was carried out with 74 teachers from the Faculty of Education. In the first phase of the study, pre-service teachers’ prior knowledge about learning objects was defined. During the second phase of the study, a two-hour seminar was given to pre-service teachers to introduce the learning objects and the object repositories. Then, they were requested to prepare a course content and instructional plan using the object repositories. During the last phase of the study, their opinions about the object approach were determined. According to findings; before the seminar, it was observed that pre-services teachers didn’t know learning objects and object repositories. Also, they didn’t use learning object repositories as a reference for their courses. Pre-service teachers’ preferences about learning object repositories were change according to some different factors: especially language, interaction level and resource type. Furthermore, it was seen that most of them exhibited positive attitude toward learning objects. As a conclusion, it would be worthwhile to increase the number of object repositories allowing preparation of course contents by combining objects to form a whole, in order to promote and spread use of learning object approach among teachers and pre-service teachers through in-service training and pre-service training programs. Also, considering the factors affecting selection of learning objects, it would be an important step to provide support to creation of object repositories particularly in the native language, with high explanatory quality and exercise opportunities, for development and spread of use of learning objects and repositories.

The Effects of Environmental Enrichment on Depressive and Anxiety-Relevant Behaviors in Socially Isolated Prairie Voles

Social isolation is associated with depression, anxiety, and negative health outcomes. Environmental enrichment, including environmental and cognitive stimulation with inanimate objects and opportunities for physical exercise, may be an effective strategy to include in treatment paradigms for affective disorders as a function of social isolation. In a rodent model-the socially monogamous prairie vole-we investigated the hypothesis that depression- and anxiety-related behaviors after social isolation would be prevented and remediated with environmental enrichment. Experiment 1 investigated the preventive effects of environmental enrichment on negative affective behaviors when administered concurrently with social isolation. Experiment 2 investigated the remediating effects of enrichment on negative affective behaviors when administered after a period of isolation. Behaviors were measured in three operational tests: open field, forced swim test (FST), and elevated plus maze. In isolated prairie voles, enrichment prevented depression-relevant (immobility in FST, group × housing interaction, p = .049) and anxiety-relevant behaviors (exploration in open field, group × housing interaction, p = .036; exploration in elevated plus maze, group × housing interaction, p = .049). Delayed enrichment also remediated these behaviors in isolated animals (immobility in FST, main effect of housing, p = .001; exploration in open field, main effect of housing, p = .047; exploration in elevated plus maze, main effect of housing, p = .001) and was slightly more effective than physical exercise alone in remediating anxiety-relevant behaviors. These findings provide insight into the beneficial effects of an enriched environment on depression- and anxiety-relevant behaviors using a translational rodent model of social isolation.

What Makes Individual Investors Exercise Early? Empirical Evidence from the Fixed-Income Market

This paper studies the empirical early exercise behavior of Individual Investors in non-tradable putable bonds. Analyzing circa 31 million holding and exercise decisions of more than 220,000 Individual Investors over 13 years, our major findings are: (i) Individual Investors use their early exercise right predominantly at points in time that are not economically advisable, which results on average in negative excess returns from exercising. (ii) Only a small fraction of attractive exercise opportunities are exploited over time. (iii) Exercise behavior differs significantly among investor groups and is related to personal characteristics. (iv) The demand for liquidity and financial flexibility is apparently a more important investment and exercise motive than performance seeking.

The What, Why, When, and How of Teaching the Science of Subjective Well-Being

The field of subjective well-being (SWB), or happiness, has become a thriving area of science, with over 10,000 publications per year on the topic in recent years. Discoveries about the causes and processes involved in SWB range widely, from culture to biology to circumstances, providing instructors an opportunity to draw broadly on concepts from psychology. New research shows that high SWB not only feels good but is also good for one’s health and social relationships. In addition to providing a platform for discussions about what constitutes a life well-lived, teaching about SWB is an excellent opportunity to emphasize scientific research and to dispel misconceptions. Besides traditional lectures, the area offers opportunities for learning exercises and self-exploration.

Optimal Multiple Stopping with Negative Discount Rate and Random Refraction Times under Levy Models

This paper studies a class of optimal multiple stopping problems driven by Levy processes. Our model allows for a negative effective discount rate, which arises in a number of financial applications, including stock loans and real options, where the strike price can potentially grow at a higher rate than the original discount factor. Moreover, successive exercise opportunities are separated by i.i.d. random refraction times. Under a wide class of two-sided Levy models with a general random refraction time, we rigorously show that the optimal strategy to exercise successive call options is uniquely characterized by a sequence of up-crossing times. The corresponding optimal thresholds are determined explicitly in the single stopping case and recursively in the multiple stopping case.

Can a Memory Club Help Maintain Cognitive Function? A Pilot Investigation

In a pilot investigation we evaluated the impact of a structured early memory loss (EML) program intervention in a longitudinal (repeated measures) study of 55 persons with mild cognitive impairment or mild dementia. At four test sites we examined whether participation in the club—which sought to stimulate mental activity and social interaction, provide opportunities for light exercise, and teach memory strategies—would be associated with changes in cognitive function during 1 year. Controlling for relevant covariates, we found that club participation was associated with improvements in two of three executive function measures and maintenance of function in two of three memory measures. We observed decline, over time, on a measure of delayed recall. There were interactions between change and test site, indicating that some effects were related to where clubs were located. This pilot study suggests that EML clubs may be an efficacious, nonpharmacologic intervention for people with early memory loss. However, further research (especially randomized control trials) is needed before recommending widespread implementation of this program.

Pedestrian and bicyclist motivation: an assessment of influences on pedestrians’ and bicyclists’ mode choice in Mt. Pleasant, Vancouver

The majority of short distance travel in North America is completed by single occupancy vehicles. Substituting walking and bicycling for these trips would reduce energy use and environmental pollution, while improving quality of life. Therefore, understanding influences on non-automotive travel behavior is crucial. Researchers and planners have touted specific factors for encouraging walking and biking, but the body of work remains fragmented. Previous studies have focused on a smaller number of factors and most of them relate to physical design. This study tests the relative importance of a range of factors, both physical and perceptual that could influence one’s choice to walk or bike. The Mt. Pleasant neighborhood in Vancouver, B.C., Canada was chosen as the location for this study as all of the pedestrian-motivating factors identified in a literature review were present. A questionnaire-based survey addressing distance, sidewalks/bike lanes, pedestrian/bicycle traffic signals, buffering from auto traffic, sense of security, cleanliness, opportunities to talk with others, enforcement of traffic laws, concern for the environment, weather, terrain, saving money, opportunities for exercise, and a visually appealing environment as influential factors was administered in person and online yielding 774 responses. All factors were shown to influence the decision to walk or bike, but some proved more significant than others, especially opportunities for exercise.

Topographic conditions and physical activity behaviour of young adults in Austria

Szabo, B., Gollner, E. & Schnabel, F. (2014). Topographic conditions and physical activity behaviour of young adults in Austria. J. Hum. Sport Exerc., 9(Proc1), pp.S210-S222. In Austria there is an east-west divide concerning the amount of physical activity that has been detected. This is associated with poorer health in the eastern region of Austria compared to the western. Experts think that differences in topographic conditions might be a reason for these differences. However this hypothesis until now has not been scientifically proven. This study incorporates a multi-staged approach. First, outdoor physical activity behaviour (levels of exercise, favourite activities etc.) among people aged between 18-35 and living in Burgenland (n=150), as well as levels of physical activity in general, were compared with those of people at the same age living in Tyrol (n=150), by using a semi-standardized quantitative online-survey. To determine if differences between these two groups were significant the chi-squared test was used. In addition satisfaction with opportunities for outdoor physical exercise, motives, barriers and wishes concerning design of green spaces were analysed. Finally experts, working in the field of physical activity promotion (n=9), discussed within a focus group how to implement results into practice. The hypothesis that topographic conditions have an influence on physical activity behaviour was confirmed. For example, people living in Tyrol are more likely to engage in mountain sports than those living in Burgenland, while Nordic Walking is more popular in Burgenland compared to Tyrol (P<0.05). The results also show that people living in Tyrol are more physically active in general (P<0.05) as well as do more outdoor sport than people living in Burgenland (P<0.05). In addition some barriers as well as need for action could be identified in both regions. The natural environment influences levels of physical activity as well as sport activities among local populations. However differences in topographic conditions are not like to be the only reason for east-west differences concerning levels and forms of physical activity. Expert recommendations need to be implemented in the future. Further research needs to be conducted to examine the role of other

Experiences in physical activity promotion in health care settings for primary prevention in the UK

In addition to the delivery of primary care services, recent changes to the NHS in the United Kingdom have placed increasing responsibility on GPs for the commissioning of the full range of health services from prevention through to clinical interventions and rehabilitation. Whilst historically there has always been an expectation that primary care professionals were ideally placed to provide support for prevention as well as treatment, their active engagement in the promotion of physical activity has remained largely superficial. With notable exceptions where individuals have a personal interest or commitment, the majority of health professionals tend to limit themselves to peremptory non-specific advice at best, or frequently don’t broach the subject at all. There are a number of reasons for this including increasing time pressures, a general lack of knowledge, limited evidence and concerns about litigation in the event of an adverse exercise induced event. However in the 1990s there was a surge of interest in the emerging “Exercise on Prescription” model where patients could be referred to community based exercise instructors for a structured “prescription” of exercise in community leisure centres. Despite the continuing popularity of the model there remain problems particularly in getting the active support of health professionals who generally cite the same barriers as previously identified. In an attempt to overcome some of these problems Wales established a national exercise referral scheme with an associated randomised controlled trial. The scheme evaluated well and had subsequently evolved with new developments including integration with secondary and tertiary care pathways, accredited training for exercise instructors and exit routes into alternative community based exercise opportunities.

Feeling Supported and Abandoned

In 2010, the Healthy Heart (HH) community-based cardiac rehabilitation program was offered at Latrobe Community Health Service in rural Victoria, Australia. The 8-week program, based on National Heart Foundation guidelines, consisted of exercise sessions; health education on diet, stress, and smoking cessation; and behavioral change strategies. Participants were also informed about local community exercise opportunities. A program evaluation was conducted in 2011 to assess whether the content of the program was meeting the needs of participants and to identify what suggestions they had for improvement. Eighteen patients had completed the HH program in 2010. Eight of these participants, 7 men and 1 woman, volunteered to take part in a focus group. Conventional content analysis was used to identify and group the common themes that emerged from the focus group discussions. Three themes were identified that reflected the participant experiences of attending the HH program. The first, "recovering confidence," described participant responses to the content of the sessions. The second, "putting it into practice," referred to their comments about taking responsibility for making lifestyle changes. The third, "feeling abandoned," emerged from the reported difficulty participants expressed about maintaining motivation for change after program completion. Participants rated the HH program as very successful by objective measures. However, they reported struggling to maintain self-management strategies postprogram. There is clearly a need to develop strategies that support cardiac rehabilitation participants over the longer-term.

Twelve month follow up of a falls prevention program in older adults from diverse populations in Australia: A qualitative study

Several randomised trials demonstrate that multi dimensional falls prevention programs are effective in reducing falls in older adults. There is a need to examine the impact of these programs in real life settings where diverse populations exist. The aim of this study was to examine the acceptability and impact on sustained participation in falls prevention activities of a combined exercise and education falls prevention program. A semi structured telephone interview was conducted with 23 participants 12 months following the completion of a 15 week falls prevention program tailored to diverse communities in Victoria, Australia and provided in both a group and home based format. Reported benefits of the falls prevention program included physical improvements in joint flexibility, mobility and balance and enjoyment derived from both the exercises and socialisation. Recall of the educational component was minimal as were ongoing behavioral changes to reduce the risk of falling other than exercise. Participation in sustained exercise for falls prevention following the completion of the program was also inconsistent. Future improvements of such programs could focus upon ensuring the exercises prescribed are sufficiently challenging for each individual in order to be of physical benefit, altering the educational style to be goal directed and more enjoyable, and integrating further strategies to support sustained participation in falls prevention behavioral changes. Linking participants with alternate ongoing exercise opportunities or potential sources of ongoing support may be advantageous in enhancing long term participation in exercise for falls prevention following cessation of the program.

Walking for Sustainable Living

There is an obvious but less stated link between walkability and sustainability. This study aims to highlight this link. Walkable communities help to cut greenhouse gas and other emissions by requiring less driving, improve residents’ health by providing more opportunities for exercise, reduce crime by facilitating social interaction, support local economy by encouraging shopping in the neighborhood. Statistical data shows an increase in obesity and overweight rates and a decrease in walking rates throughout the world and in Asian countries. This study identifies the physical environmental parameters that relates to active living and encourage walking. Such research has often been conducted in developed countries. More research is on call for Asian cities.

Acute Exercise Enhances Preschoolers’ Ability to Sustain Attention

A growing body of research has illuminated beneficial effects of a single bout of physical activity (i.e., acute exercise) on cognitive function in school-age children. However, the influence of acute exercise on preschoolers' cognitive function has not been reported. To address this shortcoming, the current study examined the effects of a 30-min bout of exercise on preschoolers' cognitive function. Preschoolers' cognitive function was assessed following a single bout of exercise and a single sedentary period. Results revealed that, after engaging in a bout of exercise, preschoolers exhibited markedly better ability to sustain attention, relative to after being sedentary (p = .006, partial eta square = .400). Based on these findings, providing exercise opportunities appears to enhance preschoolers' cognitive function.

Clinician's Commentary on DePaul et al.

Clinician's Commentary on DePaul et al.

Research on ecological design to enhance comfort in open spaces of a city (Valencia, Spain). Utility of the physiological equivalent temperature (PET)

For many years now, research has focused on issues concerning making cities easier to live in and some of the most important of these concern climatology and thermal comfort issues. There is also a growing awareness of the importance of open spaces and green areas, as key elements in providing opportunities for human interaction, leisure and physical exercise. They are important for all inhabitants, but particularly so for children and the elderly population. Of especial interest are the studies which have examined the interaction of comfort with the urban climate. This issue was studied throughout the twentieth century, but recently the role which can be played by biometeorological indices has come to be recognized, especially because of the better understanding them for those responsible for the design of these urban spaces. This study explores the application of the PET index to urban micro-spaces (urban structures), where general values for cities are not valid and where there is a need to know the PET values in order to measure the impact of all items of the urban environment which can provide an increase in comfort. The study was carried out in Valencia (Spain) with the aim of discovering, through these indices, the natural and ecological effects of urban design which can improve comfort. The study focused on: the role of water features, streets with and without trees, squares with hard and soft street surfaces, the effect of different street orientations and the impact of breezes on the city. We have found that the sheets of water, or ponds, provide a cooling effect for the space in which they are located because they have a lower albedo than its surrounding area. In narrow streets, the trees may have a blanket effect and prevent the passage of breezes. Water jets of the fountains should be designed to take advantage of the effect of the breeze to improve the thermal comfort in the surrounding area. The use of hard surfaces and light colors causes a great thermal stress in summer due to higher solar reflexivity that involves higher heat load.

Living with chronic low back pain: a metasynthesis of qualitative research

OBJECTIVES The purpose of this qualitative metasynthesis is to articulate the knowledge gained from a review of qualitative studies of patients' experiences of chronic low back pain. METHODS Meta-ethnographic methodology guided the review of 33 articles representing 28 studies published in English in peer-reviewed journals between 2000 and 2012. A systematic comparison of the main themes from each study was conducted and 'synthesised' to create superordinate themes. RESULTS Three overarching interrelated themes were identified: the impact of chronic low back pain on self; relationships with significant others that incorporated two streams - health professionals and the organisation of care and relationships with family and friends; coping with chronic low back pain. Coping strategies were predominantly physical therapies, medication and avoidance behaviours with very few successful strategies reported. Professional and family support, self-efficacy, motivation, work conditions and exercise opportunities influenced pain experiences. Review authors' recommendations included psychological therapies, education, the facilitation of self-management strategies and support groups. DISCUSSION The review substantiates chronic low back pain as complex, dynamic and multidimensional, underpinned by experiences of persistent distressing pain, loss, and lowered self-worth, stigma, depression, premature aging, fear of the future. Future research should address the paucity of longitudinal studies, loss and issues of ethnicity, gender, ageing.

A right to be fat? A survey of weight management in medium secure units

Obesity is a significant problem among patients in mental health services, with implications for morbidity and mortality. This is particularly challenging in forensic services where patients often remain in hospital for prolonged periods, may be on higher doses of medication and often have less access to exercise opportunities. This survey was conducted to investigate weight management strategies in medium secure units (MSUs) and to identify potential barriers to effective prevention and management of obesity. More than half of the MSUs do not currently have an effective strategy for managing obesity, although most have a reasonable range of weight management options available. There is dissonance among clinicians about the ethics of restricting patients’ access to food in order to reduce obesity. Whilst more coercive strategies may prove challenging in terms of maintaining the balance with human rights, it is clear that hospitals need to rigorously pursue education and health promotion.

Patients' perceptions of depression and coronary heart disease: a qualitative UPBEAT-UK study.

BackgroundThe prevalence of depression in people with coronary heart disease (CHD) is high but little is known about patients’ own perceptions and experiences of this. This study aimed to explore (i) primary care (PC) patients’ perceptions of links between their physical condition and mental health, (ii) their experiences of living with depression and CHD and (iii) their own self-help strategies and attitudes to current PC interventions for depression.MethodQualitative study using consecutive sampling, in-depth interviews and thematic analysis using a process of constant comparison. 30 participants from the UPBEAT-UK cohort study, with CHD and symptoms of depression. All participants were registered on the General Practitioner (GP) primary care, coronary register.ResultsA personal and social story of loss underpinned participants’ accounts of their lives, both before and after their experience of having CHD. This theme included two interrelated domains: interpersonal loss and loss centred upon health/control issues. Strong links were made between CHD and depression by men who felt emasculated by CHD. Weaker links were made by participants who had experienced distressing life events such as divorce and bereavement or were living with additional chronic health conditions (i.e. multimorbidity). Participants also felt ‘depressed’ by the ‘medicalisation’ of their lives, loneliness and the experience of ageing and ill health. Just under half the sample had consulted their GP about their low mood and participants were somewhat ambivalent about accessing primary care interventions for depression believing the GP would not be able to help them with complex health and social issues. Talking therapies and interventions providing the opportunity for social interaction, support and exercise, such as Cardiac Rehabilitation, were thought to be helpful whereas anti-depressants were not favoured.ConclusionsThe experiences and needs of patients with CHD and depression are diverse and include psycho-social issues involving interpersonal and health/control losses. In view of the varying social and health needs of patients with CHD and depression the adoption of a holistic, case management approach to care is recommended together with personalised support providing the opportunity for patients to develop and achieve life and health goals, where appropriate.