Design of Exercise Device for Older Adults / Diseño de Dispositivo para Ejercitación de Adultos Mayores

ABSTRACT Older adults should perform physical activity to improve cardiorespiratory functions. Aerobic exercises improve cardiovascular function, decrease basal heart rate and blood pressure, and improve mood and energy. To facilitate the execution of aerobic physical activity in older adults, the objective of this research was to design an exercise device for older adults. Starting from design specifications such as comfort, size, weight, resistance, and cost, we developed the detailed design of a horizontal bicycle. The designed device, thanks to its horizontally disposed structure, its adequate resistance to pedaling, its dimensioning based on anthropometric measurements of the Chilean population, and the disposition of sensors for heart rate and oxygen saturation, is suitable for older adults. Its weight and size also make it convenient for use inside the home, and the use of materials, components, and manufacturing processes available nationally and within the cheapest options, increases the possibility of access by older adults.

RESUMEN Es fundamental que los adultos mayores realicen actividad física para mejorar las funciones cardiorrespiratorias, particularmente los ejercicios aeróbicos mejoran la función cardiovascular, disminuyen la frecuencia cardíaca basal y la tensión arterial, además de mejorar su estado de ánimo y energía. Con la finalidad de facilitar la ejecución de actividad física del tipo aeróbica en adultos mayores, se planteó el objetivo de este trabajo, centrado en diseñar un dispositivo para su ejercitación. Partiendo de especificaciones de diseño como comodidad, tamaño, peso, resistencia y costo, se desarrolló el diseño de detalle de una bicicleta horizontal. El dispositivo diseñado, gracias a la disposición horizontal de la estructura, la resistencia adecuada al pedaleo, su dimensionamiento con base a medidas antropométricas de población chilena, y la disposición de sensores para heart rate and oxygen saturation, es adecuado para adultos mayores. Además, su peso y tamaño lo hacen conveniente para el uso dentro de las viviendas, del mismo modo, el uso de los materiales, componentes y proceso de manufactura disponibles nacionalmente y dentro de las opciones más económicas, aumentan la posibilidad de acceso por parte de los adultos mayores.

Assessement of the quality of bicycle paths and its correlation with bicycle use in florianópolis / Análise da qualidade das ciclovias e sua relação com o uso de bicicleta em florianópolis

ABSTRACT Bicycle paths are important infrastructures in the cities to promote active commuting. Thus, understanding the information inherent to their quality might help to understand their effects on human behavior. This study aimed at assessing the quality of the bike paths in the city of Florianopolisl by using the QualiCicle instrument. SOPARC tool was used to verify the use profile. A total of 38 cycling axes with a length of 54 km were selected. The qualitative analysis was classified as sufficient, with an overall average of 1.61 points. A total of 6,113 cyclists were observed; the majority was adult men who used to cycle in moderate intensity. Better-quality bike paths had a greater number of cyclists (50.5%). The logistic regression analyzes showed that young people are less likely to use cycle paths classified as 'good' ones (OR: 0.40; 95% CI: 0.24-0.67). Considering per category, there is a greater chance of women to use bike paths with a 'good/excellent' infrastructure quality, and a 'sufficient' and 'good/excellent' signalization. It is concluded that Florianopolis has an adequate bikeway network; however, the infrastructure distribution and the cycle path connections are irregular along the city regions. A better quality of the cycling infrastructures can promote greater use by women and the elderly, groups that perform less physical activity.

RESUMO Ciclovias são estruturas importantes nas cidades para promover o deslocamento ativo. Assim, compreender as informações inerentes à sua qualidade pode auxiliar na compreensão de seus efeitos sobre o comportamento humano. O objetivo deste estudo foi avaliar a qualidade das ciclovias de Florianópolis por meio do instrumento QualiCiclo. O instrumento SOPARC foi utilizado para verificar o perfil de uso. Foram selecionados ao todo 38 eixos de ciclovias com 54 km de extensão, sendo a análise qualitativa classificada como suficiente, com média geral de 1,61 pontos. Foram observados 6.113 ciclistas dos quais a Mayria eram homens, adultos e em intensidade moderada. As ciclovias de melhor qualidade possuem Mayr número de ciclistas (50,5%). As análises de regressão logística mostraram que, usualmente, jovens possuem menos chance de utilizarem as ciclovias classificadas como "boa" (OR:0,40; IC95%: 0,24-0,67). Quando observado por categoria, há uma Mayr chance de mulheres utilizarem os eixos de ciclovia que possuem "boa/ótima" qualidade de infraestrutura e "suficiente" e "boa/ótima" qualidade de sinalização. Conclui-se que Florianópolis possui uma rede de ciclovias adequada, contudo, a distribuição das estruturas e conexão de ciclovia é irregular entre as regiões da cidade. Uma Mayr qualidade da infraestrutura cicloviária pode promover Mayr uso por mulheres e idosos, grupos que menos realizam atividade física.

Analysis of electric bicycle-related traffic injury in Songjiang District of Shanghai / 上海预防医学

ObjectiveTo explore the status and influencing factors of electric bicycle （e-bike）-related traffic injury in Songjiang District of Shanghai， and to provide reference for prevention and control of the injury. MethodsA self-designed questionnaire was used to investigate the community residents over 16 years old who rode e-bike in Songjiang Western Industrial Zone. The survey included general demographic characteristics， physical and psychological conditions， e-bike use， accidents and injuries. Descriptive analysis， chi-square test and Fisher's exact probability method were used to explore the influencing factors of traffic injury by e-bike in Songjiang District. Results1 030 questionnaires were distributed and 1 013 valid questionnaires were recovered. The effective rate of the questionnaire was 98.35%. From June 2020 to May 2021， the incidence of e-bike traffic accidents in Songjiang Western Industrial Zone was 17.47% and the incidence of injuries was 12.64%. The difference between e-bike accident group and non accident group was statistically significant （P<0.05） in the following factors： gender， registered residence， educational level， sleeping time， fatigue， violation of traffic regulations including speed limit 25 km‧h-1 and crossing of red traffic lights， riding after alcohol drinking， riding speed higher than 30 km‧h-1， riding on the phone， wearing headset， turning without prompting signal， riding on the lane of motor vehicles，and e-bike life. The top three injured body parts were limb pelvis （48.10%）， body surface （27.85%） and head （13.92%）. The nature of injury was mainly contusion / abrasion （82.03%）， followed by fracture （17.19%）. ConclusionThe incidence of e-bike traffic accidents in Songjiang District is high. We should strengthen the traffic safety education of e-bike riders， strengthen the road traffic control， and reduce the occurrence of e-bike road traffic accidents in Songjiang District.

Padrão de deslocamento ativo da região metropolitana de Campinas, Brasil / Campinas metropolitan region's active commuting pattern

Analisar o padrão do deslocamento ativo da Região Metropolitana Campinas, levando em conside-ração particularidades dos residentes e suas viagens. Utilizando as bases de dados obtidas através da Pesquisa Origem e Destino da Região Metropolitana de Campinas dos anos de 2003 e 2011, foram realizadas estatísticas descritivas e temporais a partir das características dos sujeitos, municípios e via-gens. Para identificarmos diferenças adotamos o intervalo de confiança de 95% (IC 95%). Utilizamos a regressão de Poisson para verificação da correlação entre características individuais e o desfecho ser ciclista ou caminhante, adotando o valor de p < 0,05. Todos os dados foram analisados levando-se em consideração os procedimentos de amostragem para que a amostra fosse representativa. Cons-tatou-se que a frequência de ciclistas e caminhantes e suas respectivas viagens caíram. Encontramos associação positiva para ciclista ser homem e classes econômicas mais baixas, para os caminhantes houve associação positiva ser mulher e crianças/adolescentes. Quanto ao tempo de viagem, notou-se aumento na mediana para os ciclistas e queda para os caminhantes. Não encontramos nenhuma via-gem de bicicleta que faça integração com outro modo de transporte. Quanto ao porte do município, observou-se uma queda em viagens de bicicleta tanto nos municípios pequenos, médios e grandes, e os residentes de Campinas apresentaram as menores frequências

This study analyzes the active commuting pattern of the Metropolitan Region of the City of Campinas, Brazil, by considering its commuters and their features. By using the database of Pesquisa Origem e Destino (a Brazilian instrument for transportation planning) of Campinas Metropolitan Region 2003-2011, we present descriptive and temporal statistics concerning the characteristics of the region's commuters, cities, and journeys. To assess those, we adopted a confidence interval of 95% (CI 95%). We used the Poisson regression to check the correlation between individual characteristics and outcomes of being a cyclist or a pedestrian, adopting the value of p < 0.05. We took into consideration the procedures for datum obtaining to present representative samples, verifying that the number of both cyclists and pedestrians has dropped. We found pos-itive associations regarding low-income males and being a cyclist; as well as females and children/teenagers and being pedestrians. The mean length of commuting time has increased for cycling journeys and decreased for pedestrian ones. We could not find a bicycle journey that integrates with another mean of transportation. Regarding the size of a city, we observed that the number of cycling journeys has dropped in small, medium, and large municipalities; Campinas presents the lowest index

Effect of an intervention in decreasing of the perception of barriers for bicycle use in the commuting to work / Efeito de uma intervenção na redução da percepção de barreiras para o uso de bicicleta no deslocamento ao trabalho

ABSTRACT This study investigated the effect of an intervention on perceptions of barriers for the bicycle use in commuting to work by industrialists. 876 men (mean age = 35.4 ± 9.5 years) from a metallo-mechanical company participated. The sample was randomized into a control and intervention group (438 participants in each group) considering the use or not of the bicycle when commuting to work. The intervention had 23 meetings of approximately 30 minutes each, spread over six months, based on the Transteoric Model of Behavior Change (TMBC). The perception of barriers to bicycle use was assessed using the "scale to assess the perception of barriers to bicycle use". Descriptive statistics, chi-square, Wilcoxon test, Kruskal-Wallis and Mann-Whitney were applied for analysis, adopting p < 0.05. There was a statistical decline in perception of barriers to bicycle use in the intervention group (Z = -2.218; p = 0.027). When stratified by age group, greater effectiveness of the intervention was observed in reducing in the perception of barriers in individuals aged 30-39 years (Z = -2.637; p = .008). For the other age groups, there were no significant differences. It is concluded that interventions based on TMBC are effective to decrease the perception of barriers for bycicle use in the commuting to work.

RESUMO Esse estudo investigou o efeito de uma intervenção na percepção de barreiras para o uso de bicicleta no deslocamento ao trabalho de industriários. Participaram 876 homens (idade média = 35,4 ± 9,5 anos) de uma empresa metalomecânica. A amostra foi randomizada em grupo controle e intervenção (438 participantes em cada grupo), considerando o uso ou não da bicicleta ao trabalho. A intervenção contou com 23 encontros de 30 minutos cada ao longo de seis meses, baseados no Modelo Transteórico de Mudança de Comportamento (MTMC). A percepção de barreira para uso de bicicleta foi avaliada por meio da "escala de percepção de barreiras para o uso de bicicleta". Para análise foi aplicada estatística descritiva, qui-quadrado, teste de Wilcoxon, Kruskal-Wallis e Mann-Whitney adotando p < 0,05. Houve redução estatística na média da percepção de barreiras para uso de bicicleta no grupo intervenção (Z=-2,218; p=0,027). Quando estratificado por faixa etária, observou-se maior eficácia da intervenção na redução da percepção de barreiras em indivíduos na faixa etária de 30-39 anos (Z=-2,637; p=0,008). Para as demais faixas etárias, não houveram diferenças significativas. Conclui-se que intervenções baseadas no MTMC são eficazes na redução da percepção de barreiras para o uso da bicicleta para o deslocamento ao trabalho.

Trauma abdominal contuso por golpe con manubrio de bicicleta: evaluación y tratamiento / Blunt abdominal trauma due to handlebar injury

INTRODUCCIÓN: Los accidentes en bicicleta son una causa frecuente de trauma abdominal contuso en pediatría. En Chile no existen publicaciones científicas que traten sobre las lesiones abdominales por manubrio de bicicleta, su presentación y manejo. OBJETIVO: Describir tres casos clínicos de trauma abdominal contuso provocados por manubrio de bicicleta en niños, ilustrar las distintas lesiones observadas, sus formas de presentación y manejo. CASOS CLÍNICOS: 1) Paciente masculino, 11 años, consulta tras golpe con manubrio de bicicleta en epigastrio; en la Tomografía Computada (TC) de abdomen y pelvis se describió neumoretroperitoneo. Se realizó laparotomía exploradora, reparándose una perforación duodenal. 2) Paciente masculino, 14 años, consulta tras golpe en el hipocondrio izquierdo con el manubrio de la bicicleta; en la TC se evidenció fractura esplénica con múltiples laceraciones. Por la presencia de sangrado activo se trató con angioembolización, lográndose resolución de la lesión y viabilidad del órgano luego de 6 semanas de seguimiento. 3) Paciente masculino, 9 años, ingresó tras sufrir golpe con manubrio de bicicleta en el hipocondrio derecho. En TC se observó una laceración hepática, que fue manejada de forma expectante, con resolución de la lesión luego de 8 semanas de seguimiento. Todos los pacientes tuvieron una evolución favorable. CONCLUSIÓN: El trauma abdominal contuso por golpe con manubrio de bicicleta puede ser potencialmente grave en pacientes pediátricos, pudiendo afectar órganos sólidos y vísceras huecas. El manejo no quirúrgico cada vez es más utilizado, logrando altas tasas de éxito en pacientes estables. Los pacientes inestables o en los que se sospeche perforación de víscera hueca, requerirán cirugía como primera aproximación.

INTRODUCTION: Bicycle accidents are a frequent cause of blunt abdominal trauma in children. In Chile, there are no scientific articles about such accidents, their presentation and management. OBJECTIVE: The aim of this study is to describe three cases of blunt abdominal trauma due to handlebar injury in children, in order to illustrate the different kinds of lesions, their presentation, and management. CLINICAL CASES: 1) 11-year-old boy presented to Emergency Department (ED) after falling on a bi cycle handlebar, hitting his epigastric region. A CT scan showed signs of duodenal perforation. A la parotomy was performed and the duodenal perforation repaired. 2) 14-year-old boy seen at ED after a bicycle accident in which the handlebar hit him in the abdomen area. A CT scan showed a splenic injury with multiple lacerations and active bleeding that was treated with angioembolization. After 6 weeks of follow-up, he presented resolution of the lesion and viability of the spleen. 3) 9-year-old boy admitted due to a hit with the bicycle handlebar on the abdomen area. A CT scan showed a he patic injury that was managed with non-surgical procedures, achieving resolution of the lesion after 8 weeks of follow-up. CONCLUSION: Blunt abdominal trauma caused by handlebar can be potentially serious in pediatric patients, since it may affect solid and hollow abdominal viscera. Non-surgical ma nagement is becoming more used for stable patients, achieving high success rates. Unstable patients or those with suspicion of hollow viscera perforation will require surgery as first approach.

Characteristics of road traffic injury cases caused by electric bicycles in Changshan County / 预防医学

Objective@#To learn the characteristics of road traffic injury cases caused by electric bicycles in Changshan County from 2013 to 2016,and to provide evidence for the development of preventive measures or traffic regulations.@*Methods@#The surveillance data of road traffic injuries caused by electric bicycles was collected from the hospital-based product injury monitoring system in Changshan County during 2013-2016. The descriptive epidemiologic analysis on demographic characteristics,body parts and degree of injury was conducted.@*Results@#A total of 7 078 road traffic injury cases caused by electric bicycles were reported from 2013 to 2016,accounting for 49.58% of road traffic injuries. The proportion of electric bicycle injuries was higher in females than in males（P<0.05）. There were 4 893 cases aged 30-64 years,accounting for 69.13%;5 562 cases with an education level of junior high school or below,accounting for 78.58%;2 005 cases occurring from July to September,accounting for 28.33%;5 216 cases occurring from 8:00 to 19:00,accounting for 73.69%. The injury mainly lay in head,accounting for 30.77%（2 178 cases）. Most injuries were flesh wounds,accounting for 74.96%（5 306 cases）. Most cases went home after treatment,accounting for 76.09%（5 386 cases）.@*Conclusion@#The incidence of road traffic injury caused by electric bicycles is high in Changshan County. Improving the safety awareness of women and people aged 30-64 years should be focused on.

Bicycle injuries among the paediatric population at an emergency department in Singapore

INTRODUCTION@#Bicycles injuries are the leading cause of emergency department visits among all recreational activities and have been established as a significant worldwide public health burden. The purpose of this retrospective study was to describe the epidemiology and patterns of paediatric bicycle-related injuries in Singapore.@*METHODS@#This was a single-centre retrospective study based on data collected from a trauma registry between 2011 and 2016.@*RESULTS@#A total of 760 patients presented to the emergency department during this period, of whom 68.2% were male and 39.7% were aged 10-16 years. 50.1% of the patients were Chinese and 25.9% were Malay. The cyclist was the person most commonly injured (65.7%) during the bicycle accident. From 2011 to 2015, the number of bicycle injuries showed a persistent upward trend. Superficial injuries such as abrasions and bruises were the most common injuries sustained (46.1%), followed by fractures. The majority of the patients were discharged from the emergency department. There were no bicycle accident deaths recorded during the study period.@*CONCLUSION@#Our study demonstrated an increasing number of bicycle injuries among paediatric cyclists in the local setting. Parents, teachers, coaches and other caregivers should be educated regarding the need to use protective equipment and to seek medical care promptly in the case of trauma resulting from bicycle injuries.

Study on the Orthopedic Characteristics of Bicycle Injury Patients / 대한스포츠의학회지

PURPOSE: This study aimed to investigate bicycle injury patients who suffered orthopedic injuries. METHODS: From January 1, 2010 to December 31, 2014, 1,664 people visited the emergency room due to a bicycle accident. Among them, 385 patients were found to have orthopedic injuries through physical examination and imaging evaluation. Intending to evaluate whether the number of bicycle injury patients is increasing or decreasing yearly, we investigated the rate of orthopedic injuries among bicycle injury patients, the damaged areas and the extent of damage, and also investigated whether changes in frequency were correlated with sex, age, or season. RESULTS: From January 1, 2010 to December 31, 2014, a total of 237,533 people came to the emergency room. Among them, the number of bicycle injuries was 1,664 (0.7%), and 23% of the bicycle injuries (385 people) were orthopedic injuries. Among these, 77.4% were men, 44.5% were less than 20 years old, and 20% were more than 61 years old. Damage to the forearm (n=82, 21.3%) and the shoulder (n=71, 18.4%) were the most common injuries, and simple fractures affected 274 patients (71.1%), overwhelmingly more common than other patterns of damage. In combination, simple fracture and dislocations occurred in 279 cases (72.5%). CONCLUSION: Most bicycle injuries occur in young and elderly people. Fractures of the forearm and shoulder were the most common orthopedic injuries. We expect that this study will be helpful in providing information about the orthopedic characteristics of bike injuries.

Correlation Study Between Bicycle Ownership Status and Physical Activity, Time of Sitting, Overweight or Obesity / 中国循环杂志

Objective: To assess the relationship between bicycle ownership status and physical activity, time of sitting, overweight or obesity in China. Methods: Based on the information of China cohort from Prospective Urban Rural Epidemiology (PURE) study, we conducted a cross-sectional description. Multivariable linear and multivariable Logistic regression analysis were respectively used to distinguish the differences of physical activity, time of sitting, overweight or obesity status between bicycle owners and non-bicycle owners. Results: A total of 42 677 participants were analyzed, the average age was (51.23±9.72) years including 40.9% male. There were 27 744 (65.0%) bicycle owners, their MET-min/week for total physical activity, work, transportation,domestic and recreation time were 2513.00 (1114.00, 5271.00), 444.00 (0.00, 735.00), 420.00 (0.00, 990.00), 600.00 (180.00,1260.00) and 198.00 (0.00, 693.00) respectively; time of sitting was (1397.03±832.13) min/week and waist circumference was (81.03±10.53) cm. With adjusted potential confounders, bicycle owners had more transportation activity, while less total physical activity, work, domestic and recreation time than non-bicycle owners; bicycle owner had more time of sitting and less risk of obesity; BMI and waist-to-hip ratio were similar between bicycle owners and non-bicycle owners. Conclusion: Bicycle owners had more transportation related physical activity and less risk of obesity; while the total physical activity, domestic and recreation related physical activity might be reduced in them.

A roadside observation study of unsafe riding acts among electric bicycle riders in a city of Anhui Province / 中华疾病控制杂志

Objective To understand the prevalence of unsafe riding practice among electric bicycle riders,and to provide scientific basis for intervention strategies in Ma'anshan city of Anhui Province.Methods Observational method was used to observe electric bicycle riders' behavior of running red light,wearing a helmet,and manned act.The radar speed measuring instrument was used to measure the speed of electric bicycle.Results The rate of electric bicycle riders' running red light was 13.09％ (1 285/9 815),helmet wearing rate was 5.90％ (1 510/25 576),and manned rate was 20.28％ (5 187/25 576).The average speed was 24 ki/h,and the electric bicycles whose speed were ＞ 20 km/h accounted for 74.60％.There were significant differences in the running red light rate,helmet wearing rate and the average speed of travel among different time periods and dates (all P ＜ 0.05).More running the red light occurred during 13:30-14:30 and 15:00-16:00.Less helmet wearing occurred during 10:00-11:00 and 08:30-09:30.The periods with highest average speed were at07:00-08:00,08:30-09:30,11:30-12:30,and 13:30-14:30,which was 24 km/h.The helmet wearing rate of females (6.54％) was higher than that of males(5.46％),the men's average speed (24 km/h) was higher than women's (23 ki/h),and the differences were both statistically significant(all P ＜ 0.001).Conclusion The electric bicycle riders in Ma'anshan city of Anhui Province have the dangerous behavior of running red lights,not wearing a helmet,manned act and speeding.Targeted interventions should be taken to reduce the occurrence of related risk behaviors.

The Prevalence of “Drinking and Biking” and Associated Risk Factors: The Korea National Health and Nutrition Examination Survey

With the steady rise of health and environmental awareness, the number of bicyclists is increasing. However, there are few epidemiologic studies on bicycling under the influence (BUI). The aim of this study was to determine the prevalence of BUI and the associated risk factors in a representative Korean population. The data of 4,833 adult bicyclists who participated in the Korean National Health and Nutrition Examination Survey (2010–2012) were analyzed. Among the 4,833 participants investigated in this study, 586 (12.1%) had experienced BUI. As participants’ age increased, so did the prevalence of BUI (P < 0.001), with the participants who were aged 60–69 showing the highest prevalence of BUI (19.6%). With regard to BUI and drinking habits, the likelihood of being a heavy or high-risk drinker increased with the frequency of BUI (P < 0.001). In addition, there was a positive relationship between the frequency of BUI and alcohol use disorder identification score level. Finally, those who had previous experiences of BUI were significantly more likely to drive and ride motorcycles under the influence (P < 0.001). In conclusion, the prevalence of BUI was 12.1% and several associated risk factors for BUI were elucidated in this study. The development of specific preventive strategies and educational programs aimed at deterring individuals at a high risk of engaging in BUI is expected to reduce the number of alcohol-related bicycle injuries.

Epidemiology and Risk Factors for Bicycle-Related Severe Head Injury: A Single Center Experience / 대한신경손상학회지

OBJECTIVE: Head injury is the main cause of death and severe disability in bicycle-related injuries. The purpose of this study was to compare the demographic characteristics and injury mechanisms of bicycle-related head injuries according to the severity and outcome and determine the main risk factors and common types of accompanying injuries. METHODS: A total of 205 patients who were admitted to the neurosurgery department of our hospital for bicycle-related head injuries between 2007 and 2016 were analyzed. We categorized the patients into two groups according to severity and outcome of head injury, and then identified the differences in age, sex, and cause of injury between the two groups. RESULTS: Collisions with a motor vehicle increased the risk of severe head injury (p=0.011), resulted in poor outcomes (Glasgow Outcome Scale [GOS] ≤3; p=0.022), and caused more accompanying chest/abdominal (p<0.001) and pelvic/lower extremity injuries (p=0.001) than other mechanisms. Older age and high grade of head injury severity resulted in poor outcomes (p=0.028 and p<0.001, respectively), and caused more accompanying chest/abdominal injuries (p<0.032 and p<0.001, respectively) compared with younger age and low grade of head injury severity. CONCLUSION: In bicycle-related head injuries, collision with motor vehicle is one of the most important risk factor for high grade of head injury severity and outcome. In addition, bicycle-related head injuries are often accompanied by injuries of other parts of the body.

Sistema de Rehabilitación de Miembro Inferior Interconectado con un Videojuego: Una Potencial Aplicación para Víctimas de Minas Antipersonal / Lower Limb Rehabilitation System Interfaced with a Videogame: A Potential Application for Landmine Victims

Resumen A nivel mundial se registran anualmente alrededor de 3,308 víctimas de minas antipersonal (MAP), de las cuales un 67% corresponde a lesiones de miembros inferiores que requieren rehabilitación. Este artículo presenta un sistema de adquisición de datos para un equipo de rehabilitación de víctimas de MAP, quienes al interactuar con un videojuego de carreras de automóviles realizan la terapia. El sistema permite al terapeuta establecer una velocidad de pedaleo mínima y analizar la fuerza y velocidad del mismo. El desarrollo conceptual incorpora una bicicleta estática comercial, sensores para medir la fuerza de pedaleo, un sensor óptico para medir la velocidad y pulsadores de mando para interactuar con el videojuego. Para evaluar el sistema se caracterizaron y probaron los sensores, y se realizaron encuestas de percepción a 20 fisioterapeutas relacionadas con ergonomía, seguridad y potenciales beneficios del sistema. El 70%, 90% y 80% de los fisioterapeutas valoraron, respectivamente, estas características en un nivel Alto. Adicionalmente, al menos el 85% de ellos están de acuerdo con nueve beneficios potenciales para personas víctimas de MAP, por lo tanto se plantea que el sistema desarrollado puede utilizarse como 'juego serio' para apoyar las terapias de rehabilitación de personas con prótesis por esta causa.

Abstract Worldwide there are approximately 3,308 records of landmine victims during a year. 67% of them suffered injuries which require physical rehabilitation. This paper presents a data acquisition system for landmine victims rehabilitation, interfaced with a videogame, which enables to interact with a racing game. The therapist can set the minimum speed required for the rehabilitation and analyze the forces and speed developed while pedaling. The conceptual development incorporates a commercial static bicycle, sensors to measure the pedaling force, an optic sensor to measure the speed, and command buttons to control the videogame. In order to evaluate the system, the sensors were characterized and tested, and a survey was conducted to 20 physiotherapists in order to evaluate the perception of ergonomics, safety and possible benefits of the data acquisition system for rehabilitation of landmine victims. 70%, 90% and 80% of the physiotherapists, respectively, assessed these characteristics as High level. Moreover, at least 85% of them are agree with nine possible benefits for rehabilitation of landmine explosion victim. Therefore, it is proposed that the data acquisition system can be used as a serious game that supports rehabilitation therapies of people with a prosthesis due to this cause.

Políticas públicas de mobilidade urbana e práticas corporais: repercussões do sistema de bicicletas compartilhadas / Public policies of urban mobility and physical exercises: repercussions of bike-sharing systems / Public policies sobre la movilidad urbana y ejercicio físico: los efectos del sistema de bicicletas compartidas

O estudo procurou analisar as percepções dos usuários quanto à implantação do projeto de bicicletas compartilhadas em Fortaleza, Ceará. Trata-se de uma pesquisa qualitativa em que foram entrevistados 11 usuários, sistematizada por meio da análise de conteúdo do tipo análise temática. Os resultados apontam que a bicicleta compartilhada tem se tornado um meio de deslocamento alternativo ao transporte público deficiente, mas que seu papel como instrumento de lazer prevalece; encontrou-se a percepção de que o uso da bicicleta de forma contínua traz benefício à saúde, bem como a sensação de segurança. Todavia, há concentração de estações em poucos pontos da cidade e dificuldades de acesso em horário de pico. Conclui-se que o projeto de bicicletas compartilhadas no cenário deste estudo não contempla as demandas a elas atribuídas de mobilidade urbana; entretanto, fomenta o desenvolvimento de práticas corporais.

The study sought to examine the perceptions of users regarding the implementation of bike-sharing systems in Fortaleza, Ceará. This qualitative study interviewed 11 users, and systematization of data through thematic analysis of content analysis. The results indicate that the bike-sharing systems has become an alternative means of transportation, but its role as a leisure instrument prevails; He met the perception that the use of continuously cycling brings health benefits and a sense of security. However, the project is in a few places in the city and with limited access at certain times. We conclude that the shared bicycle system does not address the needs of urban mobility; however, it enhances the development of physical exercise.

El estudio trató de examinar las percepciones de los usuarios en relación con la implementación de sistemas de bicicletas compartidas en Fortaleza, Ceará. Este estudio cualitativo entrevistó a 11 usuarios, y la sistematización de los datos a través del análisis temático de análisis de contenido. Los resultados indican Que los sistemas de bicicletas compartidas se ha convertido en un medio alternativo de transporte, pero su papel como instrumento de ocio prevalece; Se reunió con la percepción de que el uso de la bicicleta continuamente trae beneficios para la salud y una sensación de seguridad. Sin embargo, el proyecto se encuentra en unos pocos lugares en la ciudad y con acceso limitado a ciertas horas. Llegamos a la conclusión de que el sistema de bicicletas compartidas no se ocupa de las necesidades de movilidad urbana; Sin embargo, se potencia el desarrollo del ejercicio físico.

O lazer sobre duas rodas: uma questão de espaço, tempo e ação em Curitiba-PR / Leisure on two wheels: a matter of space, time and action in Curitiba-PR / La diversión sobre dos ruedas: una cuestión de espacio, tiempo y accción en Curitiba-PR

Essa pesquisa buscou relacionar lazer, uso da bicicleta e mobilidade urbana. Para tanto, questionam-se quais as possibilidades e as barreiras para o uso da bicicleta na cidade de Curitiba-PR. Seguindo uma abordagem qualitativa, foram realizadas observações sistemáticas, entrevistas semiestruturadas e uma análise interpretativa. Sendo assim, surgiram as seguintes categorias de análise: espaço físico das bicicletas; espaço dos ciclistas em Curitiba; espaço do cicloativismo e espaço das políticas públicas. Conclui-se que as barreiras encontradas foram: educação no trânsito, fiscalização das normas e leis, manutenção e planejamento da malha cicloviária e a cultura para o uso da bicicleta na cidade ainda em processo de consolidação.

This research sought to relate leisure, use of bicycles and urban mobility. In order to do that, we questioned what the possibilities and barriers to the use of bicycles in the city of Curitiba-PR are. Following a qualitative approach, systematic observations, semi-structured interviews and interpretative analysis were conducted. Thus, the following categories of analysis emerged: physical space of bicycles; space of the cyclists in Curitiba; bicycle activism space and public policy space. It is concluded that the barriers found were: traffic education, monitoring of rules and laws, maintenance and planning of cycling infrastructure and use of bicycles culture in the city are still in the consolidation process.

Esa investigación buscó relacionar diversión, uso de la bicicleta y la movilidad urbana. Para ello, se examinan las posibilidades y los obstáculos para el uso de la bicicleta en la ciudad de Curitiba-PR. Siguiendo un enfoque cualitativo, se realizaron observaciones sistemáticas, entrevistas semi-estructuradas y un análisis interpretativo. Así surgieron las siguientes categorías de análisis: espacio físico para las bicicletas; espacio para los ciclistas en Curitiba; espacio para el cicloativismo espacio y espacio para las política públicas. Se concluye que los obstáculos identificados fueron: educación en el tránsito, fiscalización de las normas y leyes, manutención y planificación de la red cicloviaria y la cultura para el uso de la bicicleta en la ciudad todavía en el proceso de consolidación.

Análise das variáveis hemodinâmicas em idosos revascularizados após mobilização precoce no leito / Analysis of Hemodynamic Variables among Elderly Revascularized Patients after Early In-Bed Mobilization

Fundamentos: Durante o pós-operatório da cirurgia de revascularização do miocárdio (CRM), o repouso prolongado no leito aumenta a possibilidade de ocorrer complicações sistêmicas decorrentes do imobilismo. Objetivo: Verificar o comportamento das variáveis hemodinâmicas e no pico de fluxo expiratório (peack flow) em pacientes idosos, em pós-operatório de CRM submetidos a três tipos diferentes de intervenção fisioterapêutica. Métodos: Estudados 30 idosos estratificados em três grupos: Grupo A - mobilização com cicloergômetro; Grupo B - mobilização sem uso do cicloergômetro, mas com fisioterapia e Grupo C - sem qualquer mobilização, mas com ventilação não invasiva (VNI), sendo analisados o comportamento da frequência cardíaca (FC), frequência respiratória (FR), pressão arterial (PA), saturação periférica de oxigênio (SpO2) e pico de fluxo expiratório (peack flow). Para a variação dos resultados intragrupos, nas fases pré e pós-teste utilizou-se o teste de Wilcoxon; para a comparação intergrupos nas fases pré e pós-teste utilizou-se o teste de Kruskal-Wallis. Considerou-se significância estatística p<0,05.Resultados: Observou-se aumento significativo para os valores peack flow em todos os grupos (pré e pós-teste); redução significativa da PAS no grupo A, aumento da FC e da FR no grupo B (pré e pós-teste). Na análise intergrupos, observou-se redução da PAD no grupo C, com significado estatístico.

Background: During the post-operative phase after coronary artery bypass (CAB) surgery, prolonged bed rest increases the possibility of systemic complications resulting from immobilization. Objective: To ascertain the behavior of peak expiratory flow and hemodynamic variables among elderly patients during the CAB postoperative period undergoing three types of physiotherapy interventions. Methods: Thirty elderly patients were studied, divided into three groups: Group A - mobilization with an ergometric bicycle; Group B - mobilization without an ergometric bicycle but with physiotherapy; and Group C - no mobilization but with non-invasive ventilation, analyzing the heart rate (HR), respiration rate (RR), blood pressure (BP), peripheral oxygen saturation (SpO2)and expiratory peak flow. The Wilcoxon test was used for variations in the intra-group results for the pre- and post-test phases, using the Kruskal-Wallis test for the inter-group comparison of the pre and post-test phases, with a statistical significance of p<0.05.Results: A significant increase was observed in the peak flow values for the three groups (pre- and post-test);with a significant reduction in the systolic blood pressure for group A and higher heart rates and respiration rates in group B. The inter-group analysis presented a statistically significant reduction in the diastolic blood pressure for group C.

Comparison of Cardiorespiratory Responses Between Surya Namaskar and Bicycle Exercise at Similar Energy Expenditure Level.

Surya Namaskar (SN), a popular traditional Indian yogic practice called “Sun Salutations”, includes practice of twelve physical postures involving alternate backward bending and forward bending postures. The practice of twelve postures in succession makes one round of its practice. Many people practise it as part of their daily physical fitness regimen. No study is available to compare cardiorespiratory responses of SN with bicycle exercise (BE). 20 healthy Yoga instructors practicing various Yogic practices including SN since last 7-8 years participated in the study. They performed SN in the laboratory according to their customary daily practice routine. The subject also performed incremental load bicycle exercise test till exhaustion on their second visit for measuring their 􀀅 V O2 max. SN and BE were compared at three similar exercise intensity levels in terms of % of 􀀅 V O2 max. The exercise intensities were light (10-20% 􀀅 V O2 max), moderate (21-40% 􀀅 V O2 max) and high intensities (41-50% 􀀅 V O2 max). Heart rate at high work intensity was significantly higher in BE than SN (P<.001). Ventilation and carbon dioxide output were significantly higher in BE than SN at high exercise intensity (P<0.001). Overall, cardiorespiratory stress is less in SN than BE at similar work intensities

Acute effects of anaerobic exercises by a bicycle ergometer on elastic modulus and local hemodynamics in common carotid arteries / 医用生物力学

Objective To investigate acute effects of anaerobic exercises by a bicycle ergometer on arterial elastic modulus and local hemodynamics in human common carotid arteries with different genders. Methods Nine male and eight female healthy young volunteers at the age of 20-30 year-old successively underwent four groups of exercise trainings with the same workload by an anaerobic bicycle ergometer. The waveforms of arterial diameter and center-line blood velocity were measured in the right common carotid artery using a color Ultrasonic Doppler for each group when at rest and right after exercise training. The heart rate, systolic and diastolic blood pressures were simultaneously measured in brachial artery using an automatic electronic sphygmomanometer. All the measured data were analyzed based upon the principle of classic hemodynamics. The arterial elastic modulus and local hemodynamic parameters, including pressure-strain elastic modulus, flow rate, circumferential strain, wall shear stress and oscillatory shear index (OSI), were then calculated. Results The heart rate and arterial elastic modulus increased after exercises; with the accumulative exercises, in one cardiac cycle, the maximum and mean center-line velocity and flow rate increased while the minimum velocity and flow rate decreased; the systolic and mean blood pressure increased while diastolic blood pressure exhibited no significant change; no significant change could be found in the circumferential strain; the maximum and mean shear stress increased significantly while the minimum shear stress reduced; the oscillatory shear index also increased. Conclusions The anaerobic exercises by a bicycle ergometer may increase the arterial elastic modulus and induce significant effects on local hemodynamic parameters in common carotid arteries for young volunteers with different genders at the age of 20 30 year old. The results in this study could provide useful hemodynamic information for regulation of cerebrovascular function by anaerobic exercises.

Aspectos determinantes do posicionamento corporal no ciclismo: uma revisão sistemática / Aspects determinants of body positioning for cycling: a systematic review

Através de revisão sistemática, fez-se um levantamento de estudos que tratam do posicionamento corporal adequado para o ciclismo. Para isso, buscou-se por referências em língua Portuguesa e Inglesa, nas bases de dados LILACS, ScienceDirect, SciELO e MEDLINE. Os descritores utilizados para a busca dos artigos foram: posicionamento corporal + ciclismo; ajuste + bicicleta; postura + ciclismo; body positioning + cycling; bicycle fitting; cycling posture. Foram considerados artigos originais, de revisão simples, dissertações de mestrado e livros que tratassem de forma clara e objetiva o assunto, desde que publicados entre 1993 e 2009 (outubro). No total 20 estudos atenderam esses requisitos. De modo geral, estes sugerem que o conhecimento e habilidade para ajustar a bicicleta são úteis, no entanto, mesmo existindo protocolos para o ajuste adequado da bicicleta ao ciclista, os estudos denotam que a maioria dos ciclistas ainda as utiliza de forma errônea. Isso sugere a dificuldade de acesso aos estudos.

By means of systematic review a surveying of English and Portuguese language studies concerning the expected body positioning for improvement of cycling. Search engines used were LILACS, ScienceDirect, SciELO and MEDLINE. The keywords used to find relevant papers were: posicionamento corporal + ciclismo; ajuste + bicicleta; postura + ciclismo; body positioning + cycling; bicycle fitting; cycling posture. Original papers, short review papers, master thesis and books published from 1993 to 2009 (October) were considered when the main subject of discussion was the topic of interest. A total of 20 studies were considered. In general, the studies suggest that is will be useful to know about the bicycle fitting. Even so protocols for body positioning evaluation are available, most of studies concluded that cyclists are not able to use this protocol correctly. It suggests the difficult to access studies.