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La subescala “presión del entrenador” del Multidimensional Inventory or Perfectionism in Sport, mide las tendencias de los deportistas de percibir a sus entrenadores como fuentes de presión para obtener cierto nivel de rendimiento perfecto. El propósito de este estudio fue traducir al español hablado en México los ocho ítems de la subescala presión del entrenador, y examinar sus propiedades psicométricas (validez factorial, fiabilidad, validez convergente, validez de criterio). Participaron 106 deportistas de ambos sexos con una edad promedio de 12.5 años (DT=1.72). El análisis factorial confirmatorio apoyó la estructura unifactorial, donde seis de los ocho ítems fueron válidos para medir el factor latente. La fiabilidad demostró fuerte consistencia interna; y la presión del entrenador se relacionó positivamente con el miedo a fallar, mostrando el patrón de correlación esperada. En conclusión, esta adaptación es válida y confiable tras la eliminación de dos ítems, y puede ser utilizada en la investigación dentro del contexto deportivo mexicano.

ObjectiveTo quantify, for each activation, the effect of preactivations of differing distribution and intensity on the neutral position of T-loops (7-mm height), specifically the horizontal force, moment to force (M/F) ratio, and load to deflection ratio.MethodsA total 100 loops measuring 0.017 × 0.025 inches in cross-section were divided into two groups (n = 50 each) according to composition, either stainless steel or beta-titanium. The two groups were further divided into five subgroups, 10 loops each, corresponding to the five preactivations tested: preactivations with occlusal distribution (0°, 20°, and 40°), gingival distribution (20°), and occlusal-gingival distribution (40°). The loops were subjected to a total activation of 6-mm with 0.5-mm iterations. Statistical analysis was performed using comprised ANOVA and Bonferoni multiple comparison tests, with a significance level of 5%.ResultsThe location and intensity of preactivation influenced the force intensity. For the M/F ratio, the highest value achieved without preactivation was lower than the height of the loop. Without preactivation, the M/F ratio increased with activation, while the opposite effect was observed with preactivation. The increase in the M/F ratio was greater when the preactivation distribution was partially or fully gingival.ConclusionsDepending on the preactivation distribution, displacement of uprights is higher or lower than the activation, which is a factor to consider in clinical practice.

Objective To assess the influence of presbylarynx and presbycusis on Voice Handicap Index and emotional status. Methods A case–control, prospective, observational, cross-sectional study was conducted of patients aged 65 years or older referred to an otorhinolaryngology department from January to September 2020. Presbycusis was assessed by pure tone and vocal audiometry. Each subject underwent fibre-optic videolaryngoscopy with stroboscopy, and presbylarynx was considered when two or more of the following endoscopic findings were identified: vocal fold bowing, prominence of vocal processes in abduction, and a spindle-shaped glottal gap. Each subject completed two questionnaires: Voice Handicap Index and Geriatric Depression Scale (short-form). Results The studied population included 174 White European subjects, with a mean age of 73.99 years, of whom 22.8 per cent presented both presbylarynx and presbycusis. Multivariate linear regression revealed that only presence and severity of presbylarynx had an influence on Voice Handicap Index-30 scores. However, both spindle-shaped glottal gap and presbycusis influenced Geriatric Depression Scale scores. Conclusion Presbylarynx has a strong association with the impact of voice on quality of life. Presbylarynx and presbycusis seem to have a cumulative effect on emotional status.