Juniperus navicularis - a study of Portuguese population structure and fitness

Juniperus navicularis Gand. is a dioecious endemic conifer that constitutes the understory of seaside pine forests in Portugal, areas currently threatened by increasing urban expansion. The aim of this study is to assess the conservation status of previously known populations of this species located on its core area of distribution. The study was performed in south-west coast of Portugal. Three populations varying in size and pine density were analyzed. Number of individuals, population density, spatial distribution and individual characteristics of junipers were estimated. Female cone, seed characteristics and seed viability were also evaluated. Results suggest that J. navicularis populations are vulnerable because seminal recruitment is scarce, what may lead to a reduction of genetic variability due solely to vegetative propagation. This vulnerability seems to be strongly determined by climatic constraints toward increasing aridity. Ratio between male and female shrubs did not differ from 1:1 in any population. Deviations from 1:1 between mature and non-mature plants were found in all populations, denoting population ageing. Very low seed viability was observed. A major part of described Juniperus navicularis populations have disappeared through direct habitat loss to urban development, loss of fitness in drier and warmer locations and low seed viability. This study is the first to address J. navicularis conservation, and represents a valuable first step toward this species preservation. 

SYSTEMATIC REVIEW AND META-ANALYSIS: EFFECTS OF WALKING EXERCISE IN CHRONIC MUSCULOSKELETAL PAIN

SYSTEMATIC REVIEW AND META-ANALYSIS: EFFECTS OF WALKING EXERCISE IN CHRONIC MUSCULOSKELETAL PAIN O'Connor S.R.1, Tully M.A.2, Ryan B.3, Baxter D.G.3, Bradley J.M.1, McDonough S.M.11University of Ulster, Health & Rehabilitation Sciences Research Institute, Newtownabbey, United Kingdom, 2Queen's University, UKCRC Centre of Excellence for Public Health (NI), Belfast, United Kingdom, 3University of Otago, Centre for Physiotherapy Research, Dunedin, New ZealandPurpose: To examine the effects of walking exercise on pain and self-reported function in adults with chronic musculoskeletal pain.Relevance: Chronic musculoskeletal pain is a major cause of morbidity, exerting a substantial influence on long-term health status and overall quality of life. Current treatment recommendations advocate various aerobic exercise interventions for such conditions. Walking may represent an ideal form of exercise due to its relatively low impact. However, there is currently limited evidence for its effectiveness.Participants: Not applicable.Methods: A comprehensive search strategy was undertaken by two independent reviewers according to the preferred reporting items for systematic reviews and meta-analyses (PRISMA) and the recommendations of the Cochrane Musculoskeletal Review Group. Six electronic databases (Medline, CINAHL, PsychINFO, PEDro, Sport DISCUS and the Cochrane Central Register of Controlled Trials) were searched for relevant papers published up to January 2010 using MeSH terms. All randomised or non-randomised studies published in full were considered for inclusion. Studies were required to include adults aged 18 years or over with a diagnosis of chronic low back pain, osteoarthritis or fibromyalgia. Studies were excluded if they involved peri-operative or post-operative interventions or did not include a comparative, non exercise or non-walking exercise control group. The U.S. Preventative Services Task Force system was used to assess methodological quality. Data for pain and self-reported function were extracted and converted to a score out of 100.Analysis: Data were pooled and analyzed using RevMan (v.5.0.24). Statistical heterogeneity was assessed using the X2 and I2 test statistics. A random effects model was used to calculate the mean differences and 95% CIs. Data were analyzed by length of final follow-up which was categorized as short (≤8 weeks post randomisation), mid (2-12 months) or long-term (>12 months).Results: A total of 4324 articles were identified and twenty studies (1852 participants) meeting the inclusion criteria were included in the review. Overall, studies were judged to be of at least fair methodological quality. The most common sources of likely bias were identified as lack of concealed allocation and failure to adequately address incomplete data. Data from 12 studies were suitable for meta-analysis. Walking led to reductions in pain at short (<8 weeks post randomisation) (-8.44 [-14.54, -2.33]) and mid-term (>8 weeks - 12 month) follow-up (-9.28 [-16.34, -2.22]). No effect was observed for long-term (>12 month) data (-2.49 [-7.62, 2.65]). For function, between group differences were observed for short (-11.57 [-16.06, -7.08]) and mid-term data (-13.26 [-16.91, -9.62]). A smaller effect was also observed at long-term follow-up (-5.60 [-7.70, -3.50]).Conclusions: Walking interventions were associated with statistically significant improvements in pain and function at short and mid-term follow-up. Long-term data were limited but indicated that these effects do not appear to be maintained beyond twelve months.Implications: Walking may be an effective form of exercise for individuals with chronic musculoskeletal pain. However, further research is required which examines longer term follow-up and dose-response issues in this population.Key-words: 1. Walking exercise 2. Musculoskeletal pain 3. Systematic reviewFunding acknowledgements: Department of Employment and Learning, Northern Ireland.Ethics approval: Not applicable.

Functional management of ankle sprains: what volume and intensity of walking is undertaken in the first week

BACKGROUND:
Acute ankle sprains are usually managed functionally, with advice to undertake progressive weight-bearing and walking. Mechanical loading is an important modular of tissue repair; therefore, the clinical effectiveness of walking after ankle sprain may be dose dependent. The intensity, magnitude and duration of load associated with current functional treatments for ankle sprain are unclear.
AIM:
To describe physical activity (PA) in the first week after ankle sprain and to compare results with a healthy control group.
METHODS:
Participants (16-65 years) with an acute ankle sprain were randomised into two groups (standard or exercise). Both groups were advised to apply ice and compression, and walk within the limits of pain. The exercise group undertook additional therapeutic exercises. PA was measured using an activPAL accelerometer, worn for 7 days after injury. Comparisons were made with a non-injured control group.
RESULTS:
The standard group were significantly less active (1.2 ± 0.4 h activity/day; 5621 ± 2294 steps/day) than the exercise (1.7 ± 0 .7 h/day, p=0.04; 7886 ± 3075 steps/day, p=0.03) and non-injured control groups (1.7 ± 0.4 h/day, p=0.02; 8844 ± 2185 steps/day, p=0.002). Also, compared with the non-injured control group, the standard and exercise groups spent less time in moderate (38.3 ± 12.7 min/day vs 14.5 ± 11.4 min/day, p=0.001 and 22.5 ± 15.9 min/day, p=0.003) and high-intensity activity (4.1 ± 6.9 min/day vs 0.1 ± 0.1 min/day, p=0.001 and 0.62 ± 1.0 min/day p=0.005).
CONCLUSION:
PA patterns are reduced in the first week after ankle sprain, which is partly ameliorated with addition of therapeutic exercises. This study represents the first step towards developing evidence-based walking prescription after acute ankle sprain.

Footbridge system identification using wireless inertial measurement units for force and response measurements

With the main focus on safety, design of structures for vibration serviceability is often overlooked or mismanaged, resulting in some high profile structures failing publicly to perform adequately under human dynamic loading due to walking, running or jumping. A standard tool to inform better design, prove fitness for purpose before entering service and design retrofits is modal testing, a procedure that typically involves acceleration measurements using an array of wired sensors and force generation using a mechanical shaker. A critical but often overlooked aspect is using input (force) to output (response) relationships to enable estimation of modal mass, which is a key parameter directly controlling vibration levels in service.

This paper describes the use of wireless inertial measurement units (IMUs), designed for biomechanics motion capture applications, for the modal testing of a 109 m footbridge. IMUs were first used for an output-only vibration survey to identify mode frequencies, shapes and damping ratios, then for simultaneous measurement of body accelerations of a human subject jumping to excite specific vibrations modes and build up bridge deck accelerations at the jumping location. Using the mode shapes and the vertical acceleration data from a suitable body landmark scaled by body mass, thus providing jumping force data, it was possible to create frequency response functions and estimate modal masses.

The modal mass estimates for this bridge were checked against estimates obtained using an instrumented hammer and known mass distributions, showing consistency among the experimental estimates. Finally, the method was used in an applied research application on a short span footbridge where the benefits of logistical and operational simplicity afforded by the highly portable and easy to use IMUs proved extremely useful for an efficient evaluation of vibration serviceability, including estimation of modal masses.

Walking the Street: No more motorways for Belfast

This article explores how the spatial qualities and diversity of one of Belfast’s main arteries, North Street/Peter’s Hill, was transformed by urban planning decisions throughout the twentieth century. It looks specifically at how a car dominated planning system contributed to the deterioration of the street fabric. The analysis of historic maps and plans enables to point out how the function and dimensions of the buildings, based on ideas of plot-based urbanism, have contributed to the vibrancy of North Street/Peter’s Hill, and how the more recent transformation of those functions and dimensions damaged these streets. The article acknowledges that streets are made of the social and cultural context in which they exist, while their form and function is instrumental to their embedded public life.

La cultura del cuerpo en tiempos de globalización. La cultura fitness

En Occidente, desde fines de siglo XX, las producciones culturales asisten a un proceso acelerado de industrialización atravesado por lógicas de mercado globales y reforzado por los medios masivos de comunicación. En el caso de la cultura del cuerpo, este proceso de industrialización corresponde a la promoción/imposición de la cultura fitness, un conjunto de dispositivos de poder sobre los cuerpos que, combinando determinados conceptos de salud y belleza, exhortan al ciudadano a regular su vida, su tiempo, sus hábitos, sus energías, sus representaciones corporales y su materialidad en términos de calidad de vida y bienestar. A partir de aquí, este trabajo problematiza la posibilidad de existencia de un sujeto emancipado en relación a las representaciones y usos de su cuerpo, cuando son sus mismos deseos los que están reificados por el sistema. El desarrollo de estos temas completa ciertas problematizaciones teóricas de mi tesis actualmente en curso ?La gimnasia de los gimnasios: ni educación ni física? que pertenece a la Maestría en Educación Corporal (UNLP). El problema de investigación de la misma consiste en la revisión del papel de los profesores de Educación Física a través de su intervención en las prácticas corporales de los gimnasios, instituciones con fines de lucro en las cuales reinan ciertas prácticas y discursos dominantes acerca del cuerpo, la salud y la belleza, los cuales reproducen y refuerzan ciertos mensajes y mandatos difundidos masivamente

Ajustando el cuerpo al sistema. Un análisis acerca del fit-body y la violencia simbólica en gimnasios fitness

Esta investigación pretende (re)pensar el fitness como práctica socio-cultural moderna, observando aquellos discursos que la atraviesan y constituyen. Entre otros, se destaca el análisis de significaciones que son particulares al contexto de los gimnasios, en los cuales se desarrollan ideales distintivos de belleza o de salud, métodos de entrenamiento que responden a ?escuelas? o tendencias empresariales, ?habilidades corporales? que son ponderadas o menospreciadas, sentidos y sensibilidades legitimadostransmitidos como valores o técnicas y prácticas específicas condicionadas por los materiales utilizados. Para ello se propone reflexionar acerca de la compañía internacional ?BodySystems?, indagando aquellas prácticas desarrolladas en sus sucursales de La Plata, a través de tres técnicas de recolección de datos: el análisis de los documentos que la empresa proporciona a sus instructores, el estudio de los discursos que se desprenden de las clínicas que la compañía dicta cada tres meses y la reflexión sobre las entrevistas realizadas a los profesionales que desempeñan sus actividades en estos establecimientos. Para ello, se ponen en juego dos categorías de análisis que son características de la cultura fitness: los agentes que participan en los gimnasios constituyéndose en clientes de un cuerpo yla construcción y reproducción del "fit-body" característico de las empresas gímnicas

The Copenhagen Consensus Conference 2016: children, youth, and physical activity in schools and during leisure time

From 4 to 7 April 2016, 24 researchers from 8 countries and from a variety of academic disciplines gathered in Snekkersten, Denmark, to reach evidence-based consensus about physical activity in children and youth, that is, individuals between 6 and 18 years. Physical activity is an overarching term that consists of many structured and unstructured forms within school and out-of-school-time contexts, including organised sport, physical education, outdoor recreation, motor skill development programmes, recess, and active transportation such as biking and walking. This consensus statement presents the accord on the effects of physical activity on children's and youth's fitness, health, cognitive functioning, engagement, motivation, psychological well-being and social inclusion, as well as presenting educational and physical activity implementation strategies. The consensus was obtained through an iterative process that began with presentation of the state-of-the art in each domain followed by plenary and group discussions. Ultimately, Consensus Conference participants reached agreement on the 21-item consensus statement.

Theatrical Latency: Walking Katrina Palmer’s The Loss Adjusters

In this article I introduce the term ‘theatrical latency’ as a pleasurable effect experienced when listening to sound in relation to visual perception. Latency refers to both the phenomena of audio delay (in feedback from analogue to digital conversion and the momentary lapses experienced when playing live with recorded music) and a theatrical sensation that comes from the reanimation of visual environments through aural framing. In this configuration, the notion of latency takes on a double meaning as both a recorded phenomenon and the retrieval of something dormant within physical objects, sites or materials. These ideas will be introduced through my experience of walking Katrina Palmer’s site-specific audio work The Loss Adjusters (2015) on the island of Portland (UK). The audio tracks create an extended meditation on Portland, interweaving specific locations and histories with fictional characters and ghosts of the island.

Walking as physical exercise in Fibromyalgia: an elicitation study from the Theory of Planned Behavior

Este estudio corresponde a la primera fase de investigación formativa recomendada en la teoría de la Acción Planeada para desarrollar una intervención. Nuestros objetivos son identificar las creencias modales sobre la realización de una pauta de ejercicio en personas con fibromialgia, probar los ítems para la evaluación directa de los constructos predictivos y explorar sus relaciones con la conducta. Evaluamos a 46 mujeres con fibromialgia. El análisis de contenido mostró un mayor número de consecuencias positivas que negativas asociadas a la ejecución de la pauta de ejercicio (creencias comportamentales); la familia y los amigos son los referentes importantes (creencias normativas) y se detectaron factores facilitadores e inhibidores de la ejecución de la conducta de ejercicio, relacionados con aspectos de la fibromialgia (creencias de control) como el dolor, la fatiga y el estado de ánimo. El índice de consistencia interna más bajo fue el de la escala de norma subjetiva (α= .78). Los resultados confirman el sedentarismo de la muestra (conducta previa: Media=3.67; rango=1-7) aunque también sugieren que estas personas tienen intención de realizar la conducta (Media= 5.67). Las relaciones obtenidas entre los constructos son las esperadas desde la teoría, apoyando la pertinencia de aplicarla en la conducta y población seleccionada.

I cried to dream again: discovery and meaning-making in walking simulators

Paper presented at the 1st International Joint Conference of DiGRA and FDG Dundee, August 1-6, 2016.

Uskonto, yksilö ja yhteisö moraalin määrittäjänä - The Walking Dead -sarjan henkilöhahmojen moraaliongelmissa

Tässä tutkielmassa tarkastelen sitä, miten moraaliongelmien ratkaisuiden resurssina käytetään uskontoa, yksilöä tai yhteisöä televisiosarja The Walking Deadin henkilöhahmojen moraaliongelmissa. Tutkimuksessani lähden ensimmäiseksi kysymään, mitä moraaliongelmia sarja ylipäätään esittelee. Kiinnostukseni kohdistuu tämän jälkeen siihen, minkälaisen pohjan yhteisö luo moraaliratkaisujen tekemiseen ja siihen, miten yksilölliset tarpeet vaikuttavat päätösten perusteluihin. Tämän jälkeen mielenkiintoni keskittyy siihen, minkälaisia uskonnollisia resursseja henkilöhahmot käyttävät ongelmien ratkaisuun vai käyttävätkö lainkaan. Näiden jälkeen suhteutan moraaliongelmien ratkaisuihin käytetyt resurssit samalle viivalle ja pohdin, mitä henkilöhahmot eniten käyttävät moraaliongelmien ratkaisujen perusteena. Tutkimusaineistona toimii televisiosarja The Walking Dead, jonka henkilöhahmojen moraaliongelmia tutkin. Tutkimukseni analyysimenetelmäksi valikoitui laadullinen aineistolähtöinen sisällönanalyysi, jonka avulla olen rajannut tutkimusongelmani sekä lähdeaineistoni. Tämän jälkeen olen ryhmitellyt aineistoni valitsemieni aihepiirien mukaisesti ja lopuksi olen muodostanut tekemästäni havainnoista yhteenvedon. Sisällönanalyysin lisäksi tutkimukseni on osa fiktiivisen elämänmuodon tutkimusta. Tässä olen hyödyntänyt sisällönanalyysin menetelmiä: havainnointia, erittelyä ja vertailua. Tutkimuksessani päädyin siihen tulokseen, että moraaliongelmien resursseina voidaan sanoa käytettävän kaikkia eri mainitsemiani vaihtoehtoja: päätöksiä tehdään niin yksilöllisen tarpeen, yhteisöllisen tarpeen kuin uskonnollisuuden ja uskonnonkin kautta. Merkittävää on kuitenkin se, että suurin osa moraaliongelmien ratkaisuista pohjautuu kuitenkin yhteisön hyvinvoinnin ja elonjäämisen perusteista.

Oman pelikokemuksensa herra? Pelaajan valta, toimijuus ja vallan illuusio The Walking Dead -videopelissä

Tutkielma tarkastelee zombiteemaisessa The Walking Dead -videopelissä (Telltale Games 2012) ilmeneviä pelaajan toimijuuden ja vallan ulottuvuuksia sekä niiden merkitystä pelikokemuksille pelianalyysin avulla. Keskiössä ovat pelikokemuksen aikana syntyvät kuvitteellisen vallan tuntemukset. Tutkielman tarkoituksena on selvittää, mikä merkitys pelissä tehdyillä valinnoilla ja niiden seurauksilla voi pelikokemukselle olla sekä lisäksi pohtia erilaisia konkreettisen vaikuttamisen keinoja. Tutkielma tarkastelee lisäksi niitä tapoja, joilla peli itse osallistuu rakentamaan ja vahvistamaan pelaajan tuntemuksia pelitarinan ja -kokemuksen hallinnasta. Tutkielman aineistona toimivat videopeli sekä Telltale Community -verkkokeskustelupalstalta kerätyt kommentit, jotka avartavat käsiteltyjä näkökulmia sekä tuovat esille pelaajien kokemuksia. Kommenttien perusteella tehty analyysi on laadullista, eikä pyri kattavaan otantaan. Videopeli on aina jossain määrin ennalta rakennettu kokonaisuus, mutta sen tuottamia kokemuksia ei voida koskaan täysin säädellä ennalta. Vaikka pelin valinta- ja etenemismahdollisuudet ovat tarkoin rajattuja, voi peli synnyttää pelaajissa vahvoja vallassa olemisen tunteita sekä uniikkeja pelikokemuksia, joihin muilla pelaajilla ei ole pääsyä. Huomio ei kohdistu yksittäisen pelaajan kokemuksiin vaan nimenomaan siihen, millä kaikilla mahdollisilla tavoilla peli voidaan kokea. Pelissä koetuista valtatuntemuksista tulee kuvitteellisia vasta silloin, jos pelaaja tulee tietoiseksi toimijuutensa rajallisuudesta tai vaikutusvaltansa pinnallisuudesta. Illuusion rikkoutuminen vähentää tunnetta vaikutusvallasta, muttei poista pelikokemuksen ainutlaatuisuutta. Pelaajalla on vapaus päättää pelaamisestaan, tekemistään tulkinnoista sekä siitä, mitkä pelin tapahtumat ovat hänelle tärkeitä. Pelaaja on oman pelikokemuksensa herra, koska hän voi antaa pelin tapahtumille haluamansa merkitykset.