Perceived quality of life and the specific physical activities by the elderly

Se analizaron indicadores de salud con respecto a la percepción de la calidad de vida (CVRS) mediante el cuestionario Short Form-36 Health Survey (SF-36) y parámetros cinemáticos manifestados en el movimiento press banca (12 kilos) como predictores de las adaptaciones neurofisiológicas que se producen con la actividad física. Se trataron valores de potencia, de velocidad, aceleraciones, fuerza y variables temporales. Se utilizaron dos grupos, uno activo, de práctica física habitual (12H, 6M, 68,4±5,6 años, 1,65±0,074m, 74,57±15,41kg, BMI 26,93±4,02; act/sem 4,5±1,65h.), y otro sedentario (16H, 7M, 69 ± 7,07 años, 1,67 ± 0,072m, 74,95 ± 7,4kg, BMI 26,84±2,78) Se encontraron diferencias significativas (p<0,05;gl=1,39;dz=0,5). El grupo considerado activo se percibe con mejor calidad de vida y manifiesta de manera más rápida y con mayor fuerza el movimiento solicitado. Las conclusiones son relevantes para posteriores estudios que se centren en la pérdida de propiedades neuromusculares acompañada a la falta de práctica y al efecto del envejecimiento.Quality of life related to health indicators (QLRH) were analyzed by means of the Short Form-36 Health Survey (SF-36) questionnaire and the specified kinetic parameters of the bench press movement (12 kg) as predictors of the neurophysiological adaptations produced by physical activity. These were the values of power, velocity, acceleration, strength and temporal variables. Two groups were studied: the first group was active, undertaking regular physical activity (12 male; 6 female; 68,4±5,6 years; 1,65±0,074m; 74,57±15,41kg; BMI 26,93±4,02; weekly activity 4,5±1,65h.); the second group was sedentary (16 male; 7 female; 69±7,07 years; 1,67±0,072m; 74,95±7,4kg; BMI 26,84±2,78). Significant differences were found (p<0,05;df=1,39;dz=0,5). The group regarded as active considered itself as having a better quality of life and was able to perform the requested movement with greater speed and strength. The conclusions are relevant for future studies that centre on the loss of neuromuscular properties accompanied by a lack of physical activity and the effects of aging

NGS metabarcoding proves successful for quantitative assessment of symbiont abundance: the case of feather mites on birds

Proctophyllodes stylifer and Pteronyssoides parinus) under five proportions (16:1, 16:4, 16:16, 16:64, and 16:256 mites) against a mock community composed by Proctophyllodes clavatus and Proctophyllodes sylviae. In all mixtures, we retrieved sequence reads from all species. We found a strong linear relationship between 454 reads and the real proportion of individuals in the mixture for both focal species. The slope for Pr. stylifer was close to one (0.904), and the intercept close to zero (−0.007), thus showing an almost perfect correspondence between real and estimated proportions. The slope for Pt. parinus was 0.351 and the intercept 0.307, showing that while the estimated proportion increased linearly relative to real proportions of individuals in the samples, proportions were overestimated at low real proportions and underestimated at larger ones. Additionally, pyrosequencing replicates from each DNA extraction were highly repeatable (R = 0.920 and 0.972, respectively), showing that the quantification method is highly consistent given a DNA extract. Our study suggests that NGS is a promising tool for abundance estimation of feather mites’ communities in birds.Peer reviewe