Natural Environment Activities Research Articles

The relationship between physical activity environment, mental wellbeing, flourishing and thriving: A mixed method study

Research shows that mental wellbeing contributes to a greater quality of life and longevity, superior overall health, life success, and fulfillment. High mental wellbeing, such as flourishing and thriving, is associated with a sense of meaning and purpose, mastery and accomplishment, social connectedness, optimism, and contribution to society. Nature-based physical activity participation has been linked with mental wellbeing enhancement over and above the impact of physical activity alone. The present study sought to address a gap in the research by exploring whether the environment in which physical activity takes place and one’s gender moderate the relationship between activity time and various indices of mental wellbeing. Using a mixed methods design, participants (N = 235) aged 18 to 76 (M = 33.41, SD = 13.41) completed an online survey. We divided participants into three groups based on their preferred type of physical activity: indoor, outdoor non-nature-based, and outdoor nature-based physical activity. The moderation analyses highlight the importance of the environment in physical activity, with outdoor nature-based settings consistently showing positive associations with flourishing and thriving. These findings suggest that engaging in physical activities in natural environments can significantly predict an individual's mental wellbeing, for both males and females. Qualitative data supported the findings and also revealed that nature-based physical activity achieves these benefits through developing positive affect, social closeness and engagement, purpose, enhanced experiences, and interests beyond oneself. Findings from this study demonstrate the importance of nature-based physical activity for mental wellbeing promotion and protection, indicating that opportunities for nature-based physical activity should be more effectively provided, perhaps across multiple domains of life such as education, sport, public health, and urban planning.

The impact of forest therapy on functional recovery after acute ischemic stroke

Stroke is a leading cause of disability worldwide, with a growing need for effective rehabilitation strategies. Forest therapy, involving structured activities in natural environments, has shown significant beneficial effects in various health-related outcomes but no studies have assessed its direct effect on functional recovery after acute ischemic stroke. We assessed whether forest therapy is effective in recovering functional outcome of acute ischemic stroke compared to conventional rehabilitation therapy. This prospective cohort study included patients with acute ischemic stroke admitted within 24 hours of symptom onset. Participants were randomized into forest therapy (n=15) and control (n=27) groups. The forest therapy group underwent five sessions of guided activities in a national forest center, while the control group received standard outpatient rehabilitation. Primary outcome was changes in the modified Rankin Scale (mRS) scores, with secondary outcomes including grip strength, body composition, and psychological well-being assessed using the Worker's Stress Response Inventory and the Positive and Negative Affect Schedule from the time of hospital discharge to 3 months after stroke onset. Change of mRS were analyzed using the generalized estimating equation to compare changes over time between the two groups. At three-month follow-up, the forest therapy group demonstrated a significant improvement in mRS scores compared to the control group (p=0.034). Although no significant differences were found in grip strength or body composition, reductions in somatization and job-related stress were observed in the forest therapy group. No significant changes in positive or negative affect were detected. Forest therapy can contribute to functional recovery and reduce stress-related indicators in acute ischemic stroke patients. These findings support that the integration of forest therapy into stroke rehabilitation protocols to address both physical and psychological aspects of recovery, highlighting the potential for multidisciplinary approaches in post-stroke care.

Client-Centered and Multidisciplinary Approaches in School-Based Occupational Therapy: Perceptions of Therapists and Parents

This study aimed to explore the perspectives of occupational therapists and parents who receive therapeutic support services for their children with special needs in school. We focused on school-based occupational therapy (SBOT) service goals, delineating how participants prioritize necessary services and perceive multidisciplinary collaboration. In this cross-sectional study, we employed an online survey methodology. We used a purposive sampling method to reach all school-based therapists registered in therapeutic support centers and a snowball sampling method to recruit parents. The final sample included responses from 29 therapists and 120 parents. We found that parents reported a greater need for service provision and multidisciplinary collaboration compared to school-based occupational therapists. Although therapists felt competent in their service provision, there is an urgent need to address the service needs expressed by parents. The participating therapists reported working with lower-functioning students and prioritized goals such as “providing task skills through Individualized Education Programs (IEPs)” and “enhancing student participation in educational activities.” In contrast, parents reported supporting higher-functioning children and prioritized goals such as “therapeutic activities within school environments” and “helping with important learning activities in natural environments.” This study underscores the need for ongoing research to develop integrative occupational therapy services in the school environment.

HealthyTrailsBR – The prevalence of running-related injuries and cramps, and the description of personal and running characteristics in Brazilian trail runners: a cross-sectional study

BackgroundPhysical activity in natural environments, such as trail running, is a way to nurture physical and mental health. However, running has an inherent risk of musculoskeletal injuries. ObjectivesTo investigate the prevalence of running-related injuries (RRI) and cramps, and to describe the personal and training characteristics of Brazilian trail runners. MethodsA total of 1068 trail runners were included in this observational cross-sectional study. The participants had at least six months of trail running experience. The data were collected between April 2019 and February 2020 through an online and self-reported survey. ResultsThe point prevalence of RRIs was 39.2 % (95 % credible interval [CrI]: 36.3, 42.1). The body region with the highest point prevalence was the knee. The 12-month period prevalence of RRIs was 69.2 % (95 %CrI: 66.4, 72.0). The body region with the highest 12-month period prevalence was the lower leg. 1- and 12-month period prevalence of cramps was 19.5 % (95 %CrI: 17.1, 21.9) and 36.0 % (95 %CrI: 33.0, 38.8), respectively. Triceps surae was the muscle most affected by cramps. ConclusionsTwo in 5 (40 %) trail runners reported being injured at the time of data collection, and about 2 of 3 reported previous RRIs in the last 12 months. The most prevalent injured body regions were the knee and the lower leg. One in 5 trail runners reported cramps in the last month, increasing to 36 % in the last 12 months. Knowing better the characteristics of the population and the burden of health conditions may inform better decisions regarding implementation actions toward trail running practice.

‘I can’t outrun a bear, but I can outrun you:’ sport contests, nature challenge activities and outdoor recreation

ABSTRACT The old adage has two people out hiking who run into a bear. One starts running while the other asks ‘why are you running? You can’t outrun a bear’. To which the other responds, ‘I don’t have to outrun the bear. I only have to outrun you’. Hiking/trekking is not typically a competitive endeavor characterized by contests but, like many endeavors/pursuits/activities, competition can be injected into it; thereby sportifying it. Swimming is a sport (under certain conditions). At the same time, it is also a recreational activity and a form of physical exercise; likewise angling/fishing, climbing, cross-country skiing, mountain biking, kayaking, rowing, surfing, et al. The categorization of many activities under the umbrella of sport has it uses to understand the wider concept of what is sport, but the purpose of why one engages in ‘physical activities taking place in a natural environment’ can sometimes be more important than whether some activities might or might not qualify to be classified under the rubric of sports at all. Indicators exist to show whether participants are actually engaged toward—driven in a way, even—to further their skills in their focused activity (if it is a focused activity at all!––i.e. a ‘serious leisure’ pursuit or just a recreational hobby). From this perspective (of looking at sport-like and sporting activities in other than Olympic-style forms) this paper explores the differentiations between sport (including nature sport) contests, nature challenge activities (NCAs) and outdoor recreation from the standpoint of the most relevant factors that distinguish them: rules, skill development, purpose for engaging in them. This paper also makes the case that differentiating participants in the above activities by purpose (as either nature challenge recreationalists or nature sport devotees) has utility; to better help research into people’s engagement in physical activities in natural environments.

Euglena gracilis: Biochemical properties of a membrane bound ecto-phosphatase activity modulated by fluoroaluminate complexes and different trophic conditions

The ecto-phosphatases belong to a group of enzymes closely associated with the cell surface that has its catalytic site facing the extracellular environment, where different phosphorylated substrates can be hydrolyzed. In the present work, we biochemically characterized the ecto-phosphatase activity of the freshwater microalgae Euglena gracilis, a model microorganism, ubiquitously distributed and resistant to several environmental stressors. The ecto-phosphatase activity is acidic, stimulated by copper and presents the following apparent kinetic parameters: Km = 2.52 ± 0.12 mM p-NPP and Vmax = 3.62 ± 0.06 nmol p-NP × h−1 × 106 cells. We observed that zinc, orthovanadate, molybdate, fluoride, and inorganic phosphate inhibit the ecto-phosphatase activity with different magnitudes. Fluoroaluminate complexes are also inhibitors of this ecto-phosphatase activity. They can be formed in the enzyme reaction conditions and are likely to occur in a natural environment where E. gracilis can be found. The ecto-phosphatase activity is constant through the culture growth phases and is negatively modulated after continuous subculturing in the dark when a shift from phototrophic to the heterotrophic metabolism is likely. The analysis of those biochemical parameters may contribute to understanding the role of E. gracilis ecto-phosphatase activity in natural environments.

Estimate of Tritium Intake in the Air from Coastal Plants of Lake Kyzyltash in 2021

The goal of the research was determination of the level of annual tritium intake in the air from coastal plants of Lake Kyzyltash in 2021 and compliance of tritium content in the air of the coastal area of Lake Kyzyltash in 2021 with radiation safety standards. In the period May-September, 2021, a study of coastal plants near Lake Kyzyltash, a technological reservoir of the Mayak Production Association, was conducted. Within 100 m from the lakeside, humidity level of plants ranged from 41% to 87%, tritium volume activity level in the water of plants and transpiration water varied from 96 Bq/l to ~8.0 kBq/l and from 64 Bq/l to ~9.0 kBq/l, correspondingly. Based on the Cheddock scale, rank correlations between tritium volume activity and: time from the beginning of a vegetation period (weak reverse); distance from the lakeside (marked reverse); humidity of the plants (moderate positive), were revealed. To predict tritium intake in the air in the form HTO during the post-vegetative period, exponential decrease models of humidity and tritium volume activity in the plants with time were developed. The estimates of general periods of semi-decrease in humidity and tritium volume activity in the water of the plants, were 262 and 64 days, correspondingly. Total annual HTO intake in the air in 2021 from coastal plants was 6.92 E+11Bq, with contribution 0.35% of annual tritium intake from Lake Kyzyltash surface. The plants from the zone 0…~5m contribute 81.8% of total annual intake from coastal plants of Kyzyltash Lake (5.66E+11Bq). Annual HTO intake from the plants of Lake Kyzyltash coastline (0…~5m) only, was 5.66E+11Bq and was consistent with tritium release in 2021 from the Kursk Nuclear Power Plant (5.32E+11Bq), and tritium intake from all coastal plants of Lake Kyzyltash – with release from the Leningrad Nuclear Power Plant (6.90E+11Bq). In the course of two expeditions, if there were no precipitations, the mean HTO volume activity in the air of Lake Kyzyltash coastal areas was ~60 Bq/ m3, which is ~30 times less than permissible volume activity in the inhaled air for population 1.9E+3Bq/m3, according to NRB-99/2009. In the case of a hypothetical residence on the lakeside of Lake Kyzyltash in 2021 and a permanent level of tritium volume activity in natural environments, an annual committed effective dose of internal radiation conditioned by inhalation of super-heavy water vapor, will be 31 μSv/year for a critical group of children aged 1-2 years and 8.7 μSv/year for adult residents, according to NRB-99/2009. These estimates are conservative as far as they do not take into account the ice-free period during which there is practically no evaporation of water from Lake Kyzyltash surface and intake from plants.

Effects of microplastic ingestion on feeding activity in a widespread fish on the southwestern Atlantic coast: Ramnogaster arcuata (Clupeidae)

The presence of microplastics (MPs) in the fish gastrointestinal tract has been documented in several studies. However, it is unclear whether this ingestion is active or passive and whether it affects feeding activity in natural environments. In this study, three sites with different anthropogenic pressure were selected from the Bahia Blanca estuary, Argentina, and the small zooplanktivorous pelagic fish Ramnogaster arcuata was used to evaluate MP ingestion and its effect on specie's trophic activity. We analyzed the zooplanktonic composition, levels, and types of MPs in both the environment and the stomach contents of R. arcuata. Moreover, we assessed the trophic behavior of R. arcuata to determine electivity, stomach fullness, and vacuity indexes. The results showed that despite the availability of prey in the environment, 100 % of the specimens ingested MPs, and their levels and characteristics were different according to the site. Stomach contents at sites related to harbor activities presented the lowest MPs concentrations, most of them were paint fragments, with the smallest sizes and a low diversity of colors. The highest MP ingestions were found near the principal sewage discharge, being mostly microfibers, followed by microbeads, and with a greater variety of colors. Electivity indices showed that R. arcuata has a passive or active ingestion according to the size and shape of MPs. In addition, the lowest stomach fullness index and the highest vacuity index values were associated with the highest level of MP ingestion near the sewage discharge. Altogether, these results demonstrate a negative effect of MPs in the feeding activity of R. arcuata and help to elucidate some mechanisms by which these particles are ingested by a bioindicator fish used in South America.

What is Nature-Based Medicine and What Does It Do?

One's personal health and well-being can improve with activity in natural environments or decline without it. Many chronic illnesses to which personal nature deficiency contributes-including anxiety, depression, attention deficit, diabetes, hypertension, myopia, and obesity-have been exacerbated with the pandemic. That those illnesses may be preventable, treatable, and even reversible with an added nature-based approach may seem novel, but it is not. Though the field of nature-based medicine is just emerging in the U.S., it has been taught and practiced in Asia and the EU for decades. As the prescriptive, evidence-based use of natural settings and nature-based interventions, it aims to prevent and treat disease and improve well-being. Nature-based medicine blends particular activity in nature with the science of medicine to attempt to empower self-care safely, effectively, and happily. Its vision is to be readily available to all, regardless of proximity to blue (water-related) or green (land-related) space. The common sense of nature-based medicine belies its scientific evidence base, which is growing but not well-known, so it may seem unfamiliar to prescribe nature to patients. It will take education, training and practice to help patients access nature-based medicine and to help clinicians prescribe it.

Time change in the distribution of physical activity and its correlates among retired older Swedish adults: a repeated cross-sectional study from a national survey

BackgroundUnderstanding how older adults spend time in moderate- to vigorous-intensity physical activity (MVPA) is crucial to understanding healthy ageing. This study connects 24-h time-use diary records of the daily activities of a sample of Swedish older adults to energy intensities. The aim was to: i) estimate the prevalence of Swedish older adults (aged 65–84 years) who achieved recommended daily levels of physical activity; ii) identify what domains of everyday life contribute to MVPA; and iii) explore socio-demographic factors affecting rates of active living.MethodsWe draw on two Swedish nationally representative samples of time-use diary data from 2000/2001 and 2010/2011. Data covering the duration of all activities performed over two days were combined with activity-intensity information (metabolic equivalent of task [MET] values) to estimate the energy expenditure (MET min) originating from MVPA.ResultsResults indicate that 94.1% of Swedish older adults achieved the WHO-recommended minimum level of daily MVPA in 2010/2011; the share remained unchanged over the period. MVPA performed in natural environments (24.2%), during housework (22.8%), and on everyday walks in one’s local area (18.1%) were dominant domains contributing to energy expenditure. Home maintenance and repairs (8.8%), active transport (9.9%), and physical exercise (8.2%) contributed to a lesser extent. In 2000/2001, total MVPA energy expenditure was associated with gender, housing, living region, and disability; in 2010/2011, except for disability, these associations were no longer significant.ConclusionsThe high proportion of older adults who achieved the recommended level of MVPA, their allocation of MVPA time to diverse domains, and the reduced social distribution over time suggest that elderly people increasingly find their own paths to everyday physical activity. This indicates a need to promote MVPA not only in established ways, such as prescribed training programmes. The importance of active physical activities in natural environments, and of regular walks in the vicinity of home, indicates a need to incorporate healthy ageing considerations in wider urban and regional planning, for example, to increase access to natural environments and urban walkability. Also, older adults’ involvement in household chores, maintenance and repairs, and active transport extends responsibility to new policy areas.

Meta-omics approaches reveal unique small RNAs exhibited by the uncultured microorganisms dwelling deep-sea hydrothermal sediment in Guaymas Basin.

Small regulatory RNAs (sRNAs) are present in almost all investigated microbes, regarded as modulators and regulators of gene expression and also known to play their regulatory role in the environmentally significant process. It has been estimated that less than 1% of the microbes in nature are culturable in the laboratory, hindering our understanding of their physiology, and living strategies. However, recent big advancing of DNA sequencing and omics-related data analysis makes the understanding of the genetics, metabolic potentials, even ecological roles of uncultivated microbes possible. In this study, we used a metagenome and metatranscriptome-based integrated approach to identify small RNAs in the microbiome of Guaymas Basin sediments. Hundreds of environmental sRNAs comprising 228 groups were identified based on their homology, 82% of which displayed high similarity with previously known small RNAs in Rfam database, whereas, "18%" are putative novel sRNA motifs. A putative cis-acting sRNA potentially binding to methyl coenzyme M reductase, a key enzyme in methanogenesis or anaerobic oxidation of methane (AOM), was discovered in the genome of ANaerobic MEthane oxidizing archaea group 1 (ANME-1), which were the dominate microbe in the sample. These sRNAs were actively expressed in local Guaymas Basin hydrothermal environment, suggesting important roles of sRNAs in regulating microbial activity in natural environments.

The multidimensionality of urban nature: The well-being and integration of immigrants in Finland

Activities in natural environments greatly enhance human well-being and can support the integration of foreigners into a new country. This article explores how residents from different ethnic backgrounds in Turku, Finland appreciated and engaged with urban natural environments and how this engagement benefitted their well-being and, ultimately, their integration. Individuals enjoy activities in nature in particular ways, which may vary according to a person’s physical, social, and psychological characteristics. This is especially true for immigrants who apply traditions from their home countries to the ways in which they interact with their new environment and enjoy activities in nature. Three dimensions of nature experience—social, emotional, and normative—emerged from the research, which, in turn, supported well-being and different types of integration: interactive, identificational, and cognitive. We argue that because these dimensions are an integral part of a person’s identity and cultural background, familiarity with them may prove pivotal to constructing more welcoming and intercultural urban natural environments. Different approaches to engaging with nature should be considered in the design of urban environments and urban nature, as well as in integration programmes, to enhance the well-being and integration of foreign-background populations.

The benefits of nature-based therapy for the individual and the environment: an integrative review

Purpose This review aims to identify the commonly used nature-based therapies, the cohorts that benefit from these interventions, and the potential environmental impact of nature-based therapies. Design/methodology/approach An integrative review methodology was taken. The literature was analysed and synthesised through thematic analysis. Findings Three themes emerged from the analysis: categories of nature-based therapies; benefits of nature-based therapies; and the gains from nature-based therapies are not universal. Evidence of physiological, psychological, social, vocational and quality of life benefits from participation in nature-based therapies was evident in the literature. However, there was insufficient empirical evidence of the benefits for the environment. Practical implications Occupational therapists assist populations across the life course. Consequentially, they can be found working in a diverse range of clinical contexts. This review asserts that nature-based therapies could be a positive addition in many of these contexts. Further, while engagement in activities in natural environments is frequently used by occupational therapists practicing within institution environments, there is evidence to support its use in community service models and potentially in public health strategies. Originality/value This integrative review brings together evidence on a diverse range of nature-based therapies, cohorts, associated benefits and factors that influence these. The lack of empirical evidence on the benefits of nature-based therapies for the environment is acknowledged as a gap in the literature

Environmental Education in Initial Training: Effects of a Physical Activities and Sports in the Natural Environment Program for Sustainable Development.

Training for sustainable development is an educational challenge of prime importance. Physical activity and sports in natural environments provide training committed to sustainability and environmental education. The objective of this study was to assess the effects of an undergraduate training program in Physical Activities and Sports in Natural Environments concerned with sustainable development. A total of 113 students from the Autonomous University of Madrid (Spain) who are studying a Bachelor’s Degree in Physical Activity and Sports Sciences and a Master’s Degree in Teacher Training for Secondary Education and High School (specializing in Physical Education) were involved. Specifically, we aimed to assess the impact of this training program on three dimensions related to Environmental Education (knowledge, behaviors, and attitudes). Its effect was also examined bearing in mind students’ sex, age and educational profile (sportive and educational). Mixed-methods were used: for the quantitative approach, data were collected with the Environmental Attitude in Physical Activities in Natural Environments validated scale; for the qualitative approach individual reflective diaries completed by students that attended the program were analyzed. The results show positive effects on the students regarding the three dimensions of Environmental Education, for both the sportive and educational training profiles. The quantitative results do not present significant differences concerning the gender variable, although the qualitative information shows that female students perceived a greater environmental sensitivity during their practices. Regarding the age variable, significant differences are found in the youngest students with an educational profile. To conclude, the study ratifies that the program carried out generated improvements in terms of knowledge, behaviors and attitudes toward the environment and sustainable development. Future research should use larger samples and consider other variables related to education for sustainability.

Ambiente e Salute News - n.15 maggio-giugno 2022

Environment and health The greatest will the impact of technology on our life be, the greatest will our need for nature be. This is what emerges from this bimonthly review. Some articles put in evidence the importance of soil remediations for the health of people living near polluted sites. Others articles underline children's vulnerability to the heavy metals present in street dust or the risks of pesticides for pregnant women and future offspring. Other articles emphasize the importance of environmental education to increase awareness both in children and teenagers and how activities in natural environments can help cognitive development as well as physical and mental health. Finally, it is highlighted how much work still needs to do be done to train health workers on mitigation and adaptation actions to the impacts of climate change we are experiencing. A part of this work is also up to us pediatricians, and this is one of the tasks of this review. This issue summarizes the main articles published in the monitored journals. All articles and editorials deemed worthy of attention are listed divided by topic, with a concise comment. This number is based on the systematic review of the May and June 2022 publications.

Confronting Missing Ecological Data in the Age of Pandemic Lockdown

The COVID-19 pandemic profoundly affected research in ecology and evolution, with lockdowns resulting in the suspension of most research programs and creating gaps in many ecological datasets. Likewise, monitoring efforts directed either at tracking trends in natural systems or documenting the environmental impacts of anthropogenic activities were largely curtailed. In addition, lockdowns have affected human activity in natural environments in ways that impact the systems under investigation, rendering many widely used approaches for handling missing data (e.g., available case analysis, mean substitution) inadequate. Failure to properly address missing data will lead to bias and weak inference. Researchers and environmental monitors must ensure that lost data are handled robustly by diagnosing patterns and mechanisms of missingness and applying appropriate tools like multiple imputation, full-information maximum likelihood, or Bayesian approaches. The pandemic has altered many aspects of society and it is timely that we critically reassess how we treat missing data in ecological research and environmental monitoring, and plan future data collection to ensure robust inference when faced with missing data. These efforts will help ensure the integrity of inference derived from datasets spanning the COVID-19 lockdown and beyond.

ANALYSIS OF RECORDS OF THE EPIDEMIOLOGICAL SCREENING OF CASES OF ECHINOCOCCOSIS IN SOME CONSTITUENT ENTITIES OF THE RUSSIAN FEDERATION

We analyzed data reflected in the records of the epidemiological screening of cases with echinococcosis in 2019 in some constituent entities of the Russian Federation. It was noted that both rural people and urban residents suffered from the disease equally, while women suffered a little more than men (54.4%). It is found that the most common localization of echinococcal cysts, both in men and women, is the liver (79.5%), and the lesion of the lungs caused by echinococcal cysts (9.1) is in the second place. We presented multiple localization of echinococcal cysts affecting several organs simultaneously to a lesser extent. Two cases of hydatidosis and two cases of multilocular hydatid cyst in the liver were accompanied by a fatal outcome. In some territories, alveococcosis was diagnosed in 14 (8.75%) cases. Contacts with dogs, work on livestock farms, caring for pets, picking wild berries or mushrooms in the forest and eating them without thermal treatment, use of raw river water in housekeeping, eating unwashed vegetables and berries, activities in natural environment, hunting and dressing of wild animals, or failure to observe the rules of personal hygiene have great importance in the spread of this disease among the population, according to epidemiological records.

Urban cycles of human activity do not significantly alter the behaviour of a duetting bird

The weekend effect hypothesis predicts that weekly cycles of human activity impact animal behaviour and physiology. This hypothesis has been supported in the context of recreational activity in natural environments but it is unknown whether it also applies to urban animals. We tested this hypothesis by comparing the sentinel (territorial vigilance), foraging and vocal behaviours of an urban‐dwelling bird, the Rufous Hornero Furnarius rufus, between weekdays and weekends (and holidays) within a university campus in central Brazil. The level of human activity (noise, traffic and pedestrian flow) increases greatly on weekdays on this campus. We predicted that the birds would perceive a greater predation risk and would need to adjust their acoustic signals in response to anthropogenic noise on weekdays. Thus, we expected that the birds would spend more time as sentinels and less time foraging, and would sing for longer periods and at a higher pitch on weekdays than on weekends. We also expected weaker duet responsiveness (answering partner‐initiated song) on noisier weekdays than on weekends, assuming that noise would disrupt signal transmission between partners. We found that birds spent slightly more time (˜ 4%) in sentinel behaviour and less time (˜ 2–5%) foraging on weekdays than on weekends, but these effects were small and not statistically significant. Birds were equally likely to sing solos, start duets and answer partner‐initiated duets on weekends and weekdays. Finally, phrase duration and acoustic parameters of duets were similar on weekends and weekdays. Our results provide little support for the weekend effect hypothesis, suggesting that these urban‐dwelling birds may be habituated or indifferent to periodic variation in human activity levels.

Understanding LSTM Network Behaviour of IMU-Based Locomotion Mode Recognition for Applications in Prostheses and Wearables.

Human Locomotion Mode Recognition (LMR) has the potential to be used as a control mechanism for lower-limb active prostheses. Active prostheses can assist and restore a more natural gait for amputees, but as a medical device it must minimize user risks, such as falls and trips. As such, any control system must have high accuracy and robustness, with a detailed understanding of its internal operation. Long Short-Term Memory (LSTM) machine-learning networks can perform LMR with high accuracy levels. However, the internal behavior during classification is unknown, and they struggle to generalize when presented with novel users. The target problem addressed in this paper is understanding the LSTM classification behavior for LMR. A dataset of six locomotive activities (walking, stopped, stairs and ramps) from 22 non-amputee subjects is collected, capturing both steady-state and transitions between activities in natural environments. Non-amputees are used as a substitute for amputees to provide a larger dataset. The dataset is used to analyze the internal behavior of a reduced complexity LSTM network. This analysis identifies that the model primarily classifies activity type based on data around early stance. Evaluation of generalization for unseen subjects reveals low sensitivity to hyper-parameters and over-fitting to individuals’ gait traits. Investigating the differences between individual subjects showed that gait variations between users primarily occur in early stance, potentially explaining the poor generalization. Adjustment of hyper-parameters alone could not solve this, demonstrating the need for individual personalization of models. The main achievements of the paper are (i) the better understanding of LSTM for LMR, (ii) demonstration of its low sensitivity to learning hyper-parameters when evaluating novel user generalization, and (iii) demonstration of the need for personalization of ML models to achieve acceptable accuracy.

A mixed-methods evaluation of a group based trail walking program to reduce anxiety in cancer survivors

BackgroundCancer survivorship results in an increased number of physical and psychosocial health issues. Engaging in physical activity in natural environments is often thought of as restorative. Despite the potential benefits of engaging in physical activity in natural environments there are no sustainable community-based programs for cancer survivors that employ this form of physical activity. This study aims to evaluate the impact of an 8-week trail-walking (TW) program on anxiety in a population of adult cancer survivors.MethodsThe TW program consisted of two trail walks per week for 8 weeks led by a hiking guide. Individuals were eligible to participate if they were 19 years or older, were a cancer survivor, were not on active immunotherapy, and had medical clearance from their physician for physical activity. While 12 participants signed up for the program, 9 participants (N = 9, 8 F, 1 M) completed the program. A mixed methodology included pre-and-post quantitative program surveys and post-program interviews. Questionnaires measured generalized anxiety, sleep disturbances, self-efficacy, self-esteem, psychological well-being and depression as well as pre-and-post hike state anxiety. Data was analysed using paired t-tests. Interviews were transcribed verbatim and an inductive thematic analysis was conducted to consolidate meaning and identify themes using NVivo 11 software.ResultsAverage attendance was 74% of the 16 hikes. There was no significant reduction in the primary outcome of generalized anxiety (p = .38). There was a significant reduction in perceived stress after 8-weeks (p = .03) and a significant reduction in state anxiety after TW (p < .001). None of the other secondary outcomes were statistically significant (p > .05). Four overarching themes, or benefits, emerged from qualitative data analysis: (a) benefits of program design (b) physical benefits, (c) psychological benefits, and (d) social benefits.ConclusionsThese findings demonstrate the utility of a TW program for cancer survivors in order to promote physical, psychological and social health. Feasibility of a TW program would be contingent on access to natural areas for TW and an instructor-led program with other cancer survivors.