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Dr. Ulloa-Diaz, David
Research Outputs
Anthropometric characteristics and functional fitness of Chilean community-dwelling older adults
2017, Dr. Ulloa-Diaz, David, Guede-Rojas, Francisco, Javier-Chirosa, Luis, Fuentealba, Sergio, Vergara, CƩsar, Salazar, Sergio, MƔrquez, HƩctor, Barboza, Paola
Introduction: Anthropometry and functional fitness (FF) are fundamental aspects for functional independence conservation of older adults (OA). However, little has been investigated in chilean OA. Objective: To analyze anthropometric and FF characteristics of non-disabled OA. Methods: One hundred and sixteen subjects participated in the study. It was determined the prevalence of weight categories (Body Mass Index [BMI]) and cardiometabolic risk (CMR) (Waist Circumference [WC], Waist-Hip Ratio [WHR] and Waist-to-Height ratio [WHtR]). Additionally, "under the norm" physical performance and performance standards (Senior Fitness Test Battery [SFT]). Anthropometric and FF differences were analyzed according sex and age categories. Results: A total of 63.8% and 73.5% of men and women respectively were overweight. The highest prevalence of CMR was obtained through WHtR and the tests with the highest prevalence of low performance were 2-minute step Test and Back scratch Test. The performance standard was reached in 29.7% and 17.3%, in men and women respectively. Men presented greater height, WHR, strength and aerobic capacity. Women had greater hip circumference, BMI, WHtR and flexibility. These results tends to be maintained in the analyzes according age categories. Conclusions: The studied sample presented a high prevalence of overweight, CMR and low physical performance especially in women. Due its low cost and complexity, it is proposed that integral evaluation of anthropometric and FF parameters should be implemented in primary care programs aimed to preserving functionality of OA.
Reliability of a standing isokinetic shoulder rotators strength test using a functional electromechanical dynamometer: effects of velocity
2020, Martinez Garcia, Dario, Rodriguez Perea, Angela, Barboza, Paola, Ulloa-Diaz, David, Jerez Mayorga, Daniel, Chirosa, Ignacio, Chirosa RĆos, Luis Javier
Background. The evaluation of the force in internal rotation (IR) and external rotation (ER) of the shoulder is commonly used to diagnose possible pathologies or disorders in the glenohumeral joint and to assess patientās status and progression over time. Currently, there is new technology of multiple joint isokinetic dynamometry that allows to evaluate the strength in the human being. The main purpose of this study was to determine the absolute and relative reliability of concentric and eccentric internal and external shoulder rotators with a functional electromechanical dynamometer (FEMD). Methods. Thirty-two male individuals (21.46 Ā± 2.1 years) were examined of concentric and eccentric strength of shoulder internal and external rotation with a FEMD at velocities of 0.3 m sā1 and 0.6 m sā1 . Relative reliability was determined by intraclass correlation coefficients (ICC). Absolute reliability was quantified by standard error of measurement (SEM) and coefficient of variation (CV). Systematic differences across velocities testing circumstances, were analyzed with dependent t tests or repeated measures analysis of variance in case of two or more than two conditions, respectively. Results. Reliability was high to excellent for IR and ER on concentric and eccentric strength measurements, regardless of velocity used (ICC: 0.81ā0.98, CV: 5.12ā8.27% SEM: 4.06ā15.04N). Concentric outcomes were more reliable than eccentric due to the possible familiarization of the population with the different stimuli. Conclusion. All procedures examined showed high to excellent reliability for clinical use. However, a velocity of 0.60 m sā1 should be recommended for asymptomatic male patients because it demands less time for evaluation and patients find it more comfortable.