Does the wearing time of motion sensor interfere with the choice of physical activity in daily life outcomes of COPD patients?

Este estudo analisa a atividade física na vida diária (AFVD) de pacientes com doença pulmonar obstrutiva crônica (DPOC), quantificada em três diferentes períodos de uso diário do sensor de movimento: 8 horas, 12 horas e período de tempo acordado, a fim de identificar se os desfechos de AFVD diferem entre si. Trata-se de um estudo transversal com 45 pacientes (66±8 anos) classificados com DPOC de moderada a grave. A AFVD foi avaliada utilizando-se o monitor de atividade física SenseWear Armband (SAB) durante 7 dias consecutivos, 24 horas por dia. Compararam-se os resultados de AFVD fornecidos pelo monitor nos três períodos de avaliação dentro das 24 horas de uso. Os desfechos de sedentarismo e de atividade física (número de passos e gasto energético total) foram diferentes nos três períodos de utilização do SAB, com maiores valores na avaliação por período de tempo acordado. Quanto aos desfechos de atividade física estratificados por idade - 3 ou 2 equivalentes metabólicos (MET) -, os resultados foram similares na avaliação por 12 horas e por período de tempo acordado. Concluiu-se, afinal, que o uso do monitor de atividade física durante o tempo acordado é o desfecho mais indicado para monitoração acurada e completa de sedentarismo e atividade física em pacientes com DPOC.Este estudio analiza la actividad física en la vida diaria (AFVD) de pacientes con enfermedad pulmonar obstructiva crónica (EPOC), cuantificada en tres distintos períodos de uso diario del sensor de movimiento: 8 horas, 12 horas y el período de tiempo despierto, con la finalidad de identificar si los resultados de AFVD difieren entre sí. Se trata de un estudio transversal con 45 pacientes (66±8 años) clasificados con EPOC de moderada a grave. La AFVD ha sido evaluada con la utilización del monitor de actividad física SenseWear Armband® (SAB) durante 7 días consecutivos, las 24 horas del día. Se han comparado los resultados de AFVD suministrados por el monitor en los tres períodos de evaluación dentro de las 24 horas de uso. Los resultados de sedentarismo y de actividad física (el número de pasos y de gasto energético total) han sido distintos en los tres períodos de utilización del SAB, con valores más grandes en la evaluación por período de tiempo despierto. Cuanto a los resultados de la actividad física estratificadas por edad - 3 o 2 equivalentes metabólicos (METs) -, los resultados han sido similares en la evaluación por 12 horas y por el período de tiempo despierto. Se ha concluido, por fin, que el uso del monitor de la actividad física durante el tiempo despierto es el resultado más indicado para el monitoreo preciso y completo de sedentarismo y de la actividad física en pacientes con EPOC.This study analyzes physical activity in the daily lives (PADL) of patients with chronic obstructive pulmonary disease (COPD), measured in three different periods of daily use of motor sensor: 8 hours, 12 hours, and awake time, in order to identify if the PADL outcomes are different among each other. It is a transversal study with 45 patients (66±8 years) classified as having moderate to severe COPD. The PADL was assessed using the physical activity monitor SenseWear Armband (SAB) for 7 consecutive days, 24 hours a day. The PADL results provided by the monitor in the three evaluation periods within 24 hours of use were compared. The sedentary and physical activity outcomes (number of steps and total energy expenditure) were different in the three periods using the SAB, having higher values in the assessment per awake time. Regarding the physical activity outcomes divided into age groups - 3 or 2 metabolic equivalents (METs) -, the outcomes were similar to the evaluation for 12 hours and per awake time. It was concluded, thus, that the use of physical activity monitor during the awake time is the most indicated outcome for accurate and complete monitoring of sedentarism and physical activity in COPD patients

¿Los tests funcionales simples y rápidos reflejan un test más completo o actividad física en la vida diaria en jóvenes sanos?

Considerando o amplo uso de testes funcionais e que avaliações mais rápidas e simples são preferíveis, o objetivo deste estudo foi verificar a associação entre 5 protocolos de testes funcionais (Timed-Up-and-Go [TUG], 4-Meter-Gait-Speed [4MGS] and Sit-To-Stand [STS] in 5-repetitions [STS5rep], 30-seconds [STS30sec] and 1-minute [STS1min] protocols) e o Teste de Caminhada de 6 minutos (TC6min) bem como com a atividade física na vida diária (AFVD) em jovens saudáveis. Neste estudo transversal, a AFVD foi quantificada por um pedômetro validado para contagem de passos, e a média de 7 dias consecutivos durante o tempo acordado foi considerada. A capacidade funcional foi avaliada pelo TUG, 4MGS, STS5rep, STS30sec e STS1min, bem como pelo TC6min. 79 pessoas sem comprometimento pulmonar foram incluídas (49% homens, idade de 28 [23-36] anos). O desempenho nos testes funcionais correlacionou-se com o TC6min (0,23< r <0,56; P<0,05 para todos) e o TUG apresentou a melhor associação (R²=0,34). Entretanto, os testes funcionais simples não se correlacionaram com a AFVD (0,03<r<0,13; P>0,05 para todos). Os testes funcionais de curta duração foram fracos-moderadamente relacionados ao TC6min em jovens saudáveis. O TUG apresentou a melhor associação e explicou até 34% do TC6min; no entanto, este último não pode ser substituído por nenhum desses testes funcionais simples. Por fim, a capacidade funcional não se relacionou com a atividade física na vida diária avaliada pelos pedômetros nessa população.| Teniendo en cuenta el amplio uso de los tests funcionalesy que son preferibles evaluaciones más rápidas y sencillas, el objetivode este estudio fue verificar la asociación entre cinco protocolosde tests funcionales, a saber, timed up and go [TUG], 4-meter gaitspeed [4MGS] and sit to stand [STS] in 5-repetitions [STS5rep],30-seconds [STS30sec] and 1-minute [STS1min] protocols y la pruebade caminata de 6 minutos (6MWT), con la actividad física de la vidadiaria (AFVD) en jóvenes sanos. En este estudio transversal, la AFVDse cuantificó mediante un podómetro validado para el conteo depasos, y se consideró el promedio de siete días consecutivos duranteel tiempo acordado. La capacidad funcional se evaluó medianteTUG, 4MGS, STS5rep, STS30sec, STS1min y 6MWT. Se incluyeron a79 personas sin afectación pulmonar (49% hombres, edad media28 años). El desempeño en los tests funcionales se correlacionócon la 6MWT (0,23< r <0,56; p<0,05 para todos), y el TUG tuvola mejor asociación (R²=0,34). Sin embargo, los tests funcionalessimples no se correlacionaron con la AFVD (0,03<r<0,13; p>0,05para todos). Los tests funcionales a corto plazo fueron insuficientes,moderadamente relacionados con la 6MWT en jóvenes sanos. El TUGmostró la mejor asociación y explicó hasta el 34% de la 6MWT, pero esteno puede reemplazarse por ninguno de los tests funcionales simples.Por último, la capacidad funcional no se relacionó con la actividadfísica en la vida diaria evaluada por podómetros en esta población.Considering the wide use of functional tests and that faster and simpler evaluations are preferable, the aim of this study was to verify the association between five protocols of simple functional tests (Timed-Up-and-Go [TUG], 4-Meter-Gait-Speed [4MGS] and Sit-To-Stand [STS] in 5-repetitions [STS5rep], 30-seconds [STS30sec] and 1-minute [STS1min] protocols) and the 6-minute walk test (6MWT) as well as with physical activity in daily life (PADL) in healthy young subjects. In this cross-sectional study, PADL was quantified by a pedometer validated for step counting and the average of 7 consecutive days during the awake time was considered. Functional capacity was assessed with TUG, 4MGS, STS5rep, STS30sec and STS1min as well as with the 6MWT. 79 subjects without lung functional impairments were included (49% male, age 28 [23-36] years). Performance of simple functional tests correlated with the 6MWT (0.23< r <0.56; P<0.05 for all) and the TUG test presented the best association (R2= 0.34). However, simple functional tests did not correlate with the PADL (0.03< r <0.13; P>0.05 for all). The less time-consuming functional tests were weakly-moderately related to the 6MWT in healthy young subjects. The TUG presented the best association and explained up to 34% of the 6MWT; however, the latter cannot be replaced by none of these simple functional tests. Finally, functional capacity was not related with physical activity in daily life assessed by the pedometers in this population

Cultural adaptation and validation of the Brazilian Portuguese version of the PROactive Physical Activity in COPD-clinical visit instrument for individuals with COPD

ABSTRACT Objective: To adapt the PROactive Physical Activity in COPD-clinical visit (C-PPAC) instrument to the cultural setting in Brazil and to determine the criterion validity, test-retest reliability agreement, and internal consistency of this version. Methods: A protocol for cultural adaptation and validation was provided by the authors of the original instrument and, together with another guideline, was applied in a Portuguese-language version developed by a partner research group from Portugal. The adapted Brazilian Portuguese version was then cross-sectionally administered twice within a seven-day interval to 30 individuals with COPD (57% were men; mean age was 69 ± 6 years; and mean FEV1 was 53 ± 18% of predicted) to evaluate internal consistency and test-retest reliability. Participants also completed the International Physical Activity Questionnaire (IPAQ), the modified Medical Research Council scale, the COPD Assessment Test, and Saint George’s Respiratory Questionnaire to evaluate criterion validity. Results: The C-PPAC instrument showed good internal consistency and excellent test-retest reliability: “amount” domain = 0.87 (95% CI, 0.73-0.94) and “difficulty” domain = 0.90 (95% CI, 0.76-0.96). Bland & Altman plots, together with high Lin’s concordance correlation coefficients, reinforced that agreement. Criterion validity showed moderate-to-strong correlations of the C-PPAC with all of the other instruments evaluated, especially with the IPAQ (rho = −0.63). Conclusions: The Brazilian Portuguese version of the C-PPAC is a reliable and valid instrument for evaluating the experience of Brazilian individuals with COPD with their physical activity in daily life

Validity of the International Physical Activity Questionnaire (short form) in adults with asthma.

BackgroundThe short form of the International Physical Activity Questionnaire (IPAQ) is widely used to assess PA and has already been used in adults with asthma; however, its validity has not been yet studied in this population. Therefore, the aim of this study was to verify the convergent and discriminative validity of the IPAQ short form in adults with asthma.MethodsFifty-three adults with asthma (36 females; 48±15 years; 29±6 kg/m²) wore the triaxial activity monitor Actigraph for eight days to objectively measure steps/day, time in light physical activity (PA), moderate-to-vigorous PA (MVPA), and sedentary behaviour. Participants filled out the IPAQ matching with the same week they wore the Actigraph, with measures of: time of MVPA and total PA/week; categorization of low, moderate or high PA level; time in seated position.ResultsIPAQ self-reported total time of PA/week was weakly correlated with steps/day. The IPAQ categorization correlated moderately with time in light, MVPA and steps/day. Self-reported time in seated position on weekdays was moderately correlated with objective percentage/day of time in sedentary behaviour in the same period. IPAQ categorization in PA levels was able to differentiate between low to moderate and low to high PA levels.ConclusionsThese results cannot confidently infer the convergent validity of the IPAQ to quantify number of steps/day and time spent in PA of adults with asthma. However, this instrument may be useful to categorize patients into three levels of PA

Short-Term Effects of Using Pedometers to Increase Daily Physical Activity in Smokers: A Randomized Trial

BACKGROUND: In adults it is recommended that the minimum of 10,000 steps/day should be performed in order to consider an individual as active. The pedometer, a small device that counts steps, has been used to monitor and/or motivate physical activity in various populations. OBJECTIVE: To investigate the short-term effects of a protocol using a pedometer or an informative booklet to increase daily physical activity in apparently healthy smokers who reached or did not reach the minimum public health recommendation of 10,000 steps/day. METHODS: Subjects were randomly assigned to 2 groups: group pedometer (GP, n = 23), who wore a pedometer every day during 1 month, aiming to achieve 10,000 steps/day; and group booklet (GB, it = 17), who received a booklet with encouragement to walk as much as possible in everyday life. Each group was subdivided according to their baseline daily physical activity level: active (subjects who achieved 10,000 steps/day), and inactive (those who did not achieve this minimum). RESULTS: Only the physically inactive GP increased significantly its daily physical activity (pre vs post 7,670 [6,159 9,402] steps/day vs 10,310 [9,483-11,110] steps/day, P < .001), with a concomitant increase in the 6-min walking test (6MWT) distance (mean and interquartile range 540 m [501-586 m] vs 566 m [525-604 m], P = .03). In GP, Delta post-pre steps/day correlated significantly with baseline number of steps/day (r = -0.63, P = .01), but not with 6MWT. In the inactive subjects (summing GP and GB), there were significant correlations between steps/day and cigarettes/day, pack-years, and Fagerstrom questionnaire (r = -0.55, -0.40, and -0.59, P <= .05 for all). Furthermore, improvement in steps/day in the inactive subjects of GP was correlated with baseline cigarettes smoked per day, pack-years, and Fagerstrom questionnaire (r = 0.51, 0.65 and 0.53, P <= .05 for all). CONCLUSIONS: Physically inactive smokers improve their daily physical activity level by using a simple tool (pedometer), and larger improvement occurs in subjects with the lowest levels of physical activity.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

Does the wearing time of motion sensor interfere with the choice of physical activity in daily life outcomes of COPD patients?

<p></p><p>ABSTRACT This study analyzes physical activity in the daily lives (PADL) of patients with chronic obstructive pulmonary disease (COPD), measured in three different periods of daily use of motor sensor: 8 hours, 12 hours, and awake time, in order to identify if the PADL outcomes are different among each other. It is a transversal study with 45 patients (66±8 years) classified as having moderate to severe COPD. The PADL was assessed using the physical activity monitor SenseWear Armband (SAB) for 7 consecutive days, 24 hours a day. The PADL results provided by the monitor in the three evaluation periods within 24 hours of use were compared. The sedentary and physical activity outcomes (number of steps and total energy expenditure) were different in the three periods using the SAB, having higher values in the assessment per awake time. Regarding the physical activity outcomes divided into age groups - 3 or 2 metabolic equivalents (METs) -, the outcomes were similar to the evaluation for 12 hours and per awake time. It was concluded, thus, that the use of physical activity monitor during the awake time is the most indicated outcome for accurate and complete monitoring of sedentarism and physical activity in COPD patients.</p><p></p

Correlação entre a diferença da capacidade vital lenta e forçada com a atividade física na vida diária em pacientes com Doença Pulmonar Obstrutiva Crônica

O objetivo do estudo foi correlacionar a diferença entre capacidade vital lenta (CVL) e capacidade vital forçada (CVF) (CVL-CVF) com a atividade física na vida diária (AFVD) em pacientes com doença pulmonar obstrutiva crônica (DPOC); e verificar as diferenças na AFVD entre indivíduos com CVL maior ou menor do que a CVF. Vinte e oito indivíduos com DPOC (18 homens; 67±8 anos; VEF1: 40±13% previsto) tiveram a função pulmonar avaliada pela espirometria e foram divididos em dois grupos: CVL&gt;CVF (n=17) e CVL≤CVF (n=11). Ademais, tiveram a AFVD avaliada objetivamente pelo monitor de atividade física DynaPort®, que quantifica na vida diária, dentre outros, o tempo gasto por dia andando, em pé, sentado e deitado. Não foram encontradas correlações significativas entre CVL-CVF e as variáveis da AFVD no grupo geral. No grupo CVL&gt;CVF foi encontrada significância estatística na correlação entre a CVL-CVF e o tempo gasto por dia em pé (r=−0,56) e sentado (r=0,75). Já no grupo CVL≤CVF, houve correlação significativa somente com o tempo gasto por dia em pé (r=0,57) e deitado (r=−0,62). Ao comparar ambos os grupos, não houve diferença estatisticamente significante para nenhuma das variáveis da AFVD (p&gt;0,05 para todas). No grupo com CVL maior que a CVF houve correlação alta com o tempo gasto sentado, mas não com o tempo andando. Portanto, indivíduos com maior obstrução ao fluxo aéreo segundo a diferença CVL-CVF tendem a gastar mais tempo em atividades de menor gasto energético, que não envolvam caminhar.El presente estudio tuvo el objetivo de correlacionar la diferencia entre la capacidad vital lenta (CVL) y la capacidad vital forzada (CVF) (CVL-CVF) con la actividad física en la vida diaria (AFVD) de pacientes con enfermedad pulmonar obstructiva crónica (EPOC); y verificar las diferencias de la AFVD entre individuos con CVL mayor o menor que la CVF. Se evaluaron la función pulmonar de veintiocho personas con EPOC (18 hombres; 67±8 años; VEF1: 40±13% esperado) mediante espirometría, y los dividieron en dos grupos: CVL&gt;CVF (n=17) y CVL≤CVF (n=11). La AFVD también se evaluó objetivamente por el monitor de actividad física DynaPort®, el cual cuantifica el tiempo que se gasta en la vida diaria caminando, de pie, sentado y acostado. No se encontraron correlaciones significativas entre CVL-CVF y las variables de la AFVD en el grupo general. En el grupo CVL&gt;CVF, se encontró una significación estadística en la correlación entre CVL-CVF y el tiempo que se gasta diariamente en pie (r=−0,56) y sentado (r=0,75). El grupo CVL≤CVF presentó una correlación significativa solo con el tiempo que se gasta diariamente en pie (r=0,57) y acostado (r=−0,62). La comparación entre ambos grupos no resultó en diferencias estadísticamente significativas en ninguna de las variables de AFVD (p&gt;0,05 para todas). En el grupo con CVL mayor que la CVF, hubo una alta correlación con el tiempo que se gasta sentado, pero con el tiempo que se gasta caminando no se encontró este resultado. Se concluye que las personas con una mayor obstrucción del flujo de aire de acuerdo con la diferencia CVL-CVF tienden a gastar más tiempo en actividades con menos gasto de energía, las que no implican caminar.The aim of this study was to correlate the difference of vital capacity (VC) and forced vital capacity (FVC) (VC-FVC) with physical activity in daily life (PADL) in patients with chronic obstructive pulmonary disease (COPD); and investigate the differences in PADL in individuals with VC smaller or greater than FVC. Twenty-eight patients with COPD (18 men, 67±8 years; FEV1: 40±13% predicted) had their lung function assessed by spirometry and were divided into two groups: VC&gt;FVC (n=17) and VC≤CVF (n=11). Furthermore, they had their PADL evaluated by a validated activity monitor which measures, among other variables, time spent/day walking, standing, sitting and lying. There were no correlations between VC-FVC and the variables of PADL in the general group. In the group VC&gt;FVC there was statistically significant correlation between VC-FVC and the time spent/day standing (r=−0.56) and sitting (r=0.75). In the group VC≤CVF , VC-FVC was significantly correlated with time spent/day standing (r=0.57) and lying (r=−0.62). When comparing the groups, there was no statistically significant difference for any variable of PADL (p&gt;0.05 for all). In conclusion, in patients with VC greater than FVC there was high correlation with time spent/day sitting, but not with time spent/day walking. Therefore, individuals with greater airflow obstructio

Physical Activity of Patients with COPD from Regions with Different Climatic Variations

Seasonal changes in physical activity in daily life (PADL) of patients with Chronic Obstructive Pulmonary Disease (COPD) living in regions of the world with contrasting (i.e., mild or marked) weather variations have not been yet investigated. We aimed to quantify PADL and compare its variability caused by seasonality in patients with COPD who live in world regions with different summer-winter climatic variations (i.e. Londrina, Brazil and Leuven, Belgium). In a longitudinal, prospective and observational study, patients with COPD from Brazil and Belgium wore the SenseWear Armband for 7 days in summer and 7 days in winter. Active time (≥2METs) was the primary outcome. PADL data were matched day-by-day with weather information. Regarding the two assessment moments, median (min;max) temperatures were 11 (-5.5;27.2)°C in Leuven and 21 (7;27)°C in Londrina. Patients in Brazil (n = 19, 69 ± 7 years, FEV(1) 47 ± 15%pred) and Belgium (n = 18, 69 ± 6 years, FEV(1) 50 ± 15%pred) decreased their active time in winter compared to summer (p < 0.05), and this reduction was more pronounced in Brazil (p = 0.01, between group). Mean, minimum and maximum temperature, daylight duration and relative humidity were significantly related to active time. Patients with COPD decrease their PADL in winter even in a region with milder climatic variation.peerreview_statement: The publishing and review policy for this title is described in its Aims & Scope. aims_and_scope_url: http://www.tandfonline.com/action/journalInformation?show=aimsScope&journalCode=icop20status: publishe