This systematic review and meta-analysis aimed to assess the available body of published peer-reviewed articles related to the effects of Olympic combat sports (OCS), compared with active/passive controls, on balance, fall risk, or falls in older adults. The TESTEX and GRADE scales assessed the methodological quality and certainty of the evidence. The protocol was registered in PROSPERO (code: CRD42020204034). From 1496 records, eight studies were included, involving 322 older adults (64% female; mean age = 71.1 years). The TESTEX scale revealed all studies with a score ≥ 60% (moderate-high quality). The GRADE scale indicated all studies with at least some concerns, up to a high risk of bias (i.e., was rated very low). Meta-analyses were planned, although the reduced number of studies precluded its incorporation in the final manuscript. Only two from six studies that assessed balance found improvements after OCS compared to controls. No differences were found between OCS vs. control groups for fall risk or falls. The available evidence does not allow a definitive recommendation for or against OCS interventions as an effective strategy to improve balance and reduce the fall risk or falls in older adults. Therefore, more high-quality studies are required to draw definitive conclusions.

Background: Maximal voluntary isometric handgrip strength (MVIHS) is influenced by age, sex, and handedness. Aim: To assess the association of MVIHS with age, sex, and handedness in older adults. Material and Methods: MVIHS was measured using a digital dynamometer in 60 men and 60 women aged 73 ± 6 years. Weight, height and handedness were also recorded. For analysis purposes, participants were divided into two age groups (65 to 70.9 years of age and ≥ 71 years). Results: A negative correlation was observed between age and MVIHS in the non-dominant (r = -0.65 and -0.59 in men and women, respectively) and dominant hands (r = -0.71 and -0.64 in men and women, respectively). When age and MVIHS were correlated in the group aged 65-70 years, a significant correlation was observed in the non-dominant (r = -045 and -0.61 in men and women, respectively) and dominant hands (r = -0.47 and -0.64 in men and women, respectively). In the group aged ≥ 71 years, a stronger correlation with age was also observed in the non-dominant (r = -0.92 and -0.90 in men and women, respectively) and dominant hands (r = -0.95 and -0.90 in men and women, respectively). MVIHS was 2.8 to 8.9% lower in the non-dominant than in the dominant hand in all age groups. MVIHS was lower in women than in men in both age groups. Conclusions: MVIHS declines with age (especially after 71 years of age), is higher in men than women, and higher in the dominant than the non-dominant hand.

This study aims to compare the effects of standard warm-up versus warm-up using stretching exercises on the physical performance of male youth soccer players. Eighty-five male soccer players (age: 10.3 ± 4.3 years; body mass index: 19.8 ± 4.3 kg/m2) were assessed for countermovement jump height (CMJ, cm), 10 m, 20 m and 30 m running sprint speed (s) and ball kicking speed (km/h) for the dominant and non-dominant leg under five (randomized) warm-up conditions. Using 72 h of recovery between conditions, the participants completed a control condition (CC) and four experimental conditions, including static stretching (SSC), dynamic stretching (DSC), ballistic stretching (BSC), and proprioceptive neuromuscular facilitation (PNFC) exercises. All warm-up conditions had a duration of 10 minutes. The main results indicate that no significant differences (p > 0.05) were found between warm-up conditions compared to CC in CMJ (CC = 28.1 ± 4.9; SSC = 28.4 ± 4.9; DSC = 30.9 ± 4.8; BSC = 30.9 ± 5.2; PNFC = 28.4 ± 5.0), 10 m sprint (CC = 2.42 ± 0.4; SSC = 2.50 ± 0.4; DSC = 2.30 ± 0.3; BSC = 2.27 ± 0.3; PNFC = 2.53 ± 0.4), 20 m sprint (CC = 5.42 ± 0.9; SSC = 5.59 ± 0.9; DSC = 5.37 ± 0.9; BSC = 5.40 ± 0.9; PNFC = 5.44 ± 0.9), 30 m sprint (CC = 8.05 ± 1.3; SSC = 8.27 ± 1.3; DSC = 8.01 ± 1.3; BSC = 8.00 ± 1.3; PNFC = 8.12 ± 1.3), ball kicking speed for dominant (CC = 56.2 ± 4.9; SSC = 55.3 ± 5.2; DSC = 56.9 ± 5.8; BSC = 57.3 ± 5.8; PNFC = 55.7 ± 5.2) and non-dominant leg (CC = 52.8 ± 3.4; SSC = 51.8 ± 4.6; DSC = 53.5 ± 5.4; BSC = 53.6 ± 4.9; PNFC = 52.5 ± 4.0). In conclusion, compared to standard warm-up, stretching-based warm-up exerts no effect on male youth soccer players jump height, sprint speed and ball kicking speed.

Este artículo fue aprobado para publicación en el v68n3 de la Revista de la Facultad de Medicina teniendo en cuenta los conceptos de los pares evaluadores y los cambios realizados por los autores según estos conceptos. Por lo tanto, se publica la versión preliminar del artículo para su consulta y citación provisional, pero debe aclararse que esta puede diferir del documento final, ya que no ha completado las etapas finales del proceso editorial (corrección de estilo, traducción y diagramación) y solo los títulos, datos de autores, palabras clave y resúmenes corresponden a la versión final del artículo.Esta versión puede consultarse, descargarse y citarse según se indique a continuación, pero debe recordarse que el documento final (PDF, HTML y XML) puede ser diferente. Cómo citar:Hernández-Martínez J, Rauch-Gajardo M, Cisterna D, Ramirez-Campillo R, Moran J, Knechtle B, et al. [Efecto del calentamiento en la fuerza de agarre de mano en mujeres sedentarias con sobrepeso]. Rev. Fac. Med. 2020;68(3): In press -2020. English. doi: http://dx.et al. Effect of warm-up on hand grip strength in sedentary and overweight women. Rev. Fac. Med. 2020;68(3): In press -2020. English. doi: Title: Effect of warm-up on hand grip strength in sedentary and overweight women Short title: Warm-up, handgrip strength and overweight Título completo: Efecto del calentamiento en la fuerza de agarre de mano en mujeres sedentarias con sobrepeso Título corto: Calentamiento, fuerza de agarre y sobrepeso.

Hernández, J. & Ramírez, R. (2017). Efectos del entrenamiento vibratorio sobre el riesgo de caída en adultos mayores institucionalizados: una revisión breve. Revista Ciencias de la Actividad Física UCM, N° 18(2) julio-diciembre, 1-7. RESUMENObjetivo: analizar los efectos del entrenamiento vibratorio sobre el riesgo de caída, el cual implica mediciones de velocidad de caminata, equilibrio, potencia y fuerza muscular, en adultos mayores institucionalizados, mediante una revisión sistemática. Método: se realizó una búsqueda bibliográfica sistemática en PUBMED, una de las bases de datos de disponibilidad electrónica más grandes del mundo. Se seleccionaron estudios clínicos experimentales en Inglés realizados en los últimos 5 años. Resultados: 6 estudios fueron detectados. Entre los principales hallazgos, el entrenamiento vibratorio mejoró la velocidad de caminata, el equilibrio, la densidad ósea, la fuerza y potencia muscular, en combinación con otro ejercicio o de manera individual. Conclusión: el entrenamiento vibratorio en adultos mayores institucionalizados, disminuye el riesgo de caídas en este grupo etario. PALABRAS CLAVE Velocidad de caminata, equilibrio, potencia y fuerza muscular.ABSTRACT Objective: to analyze the effects of vibration training on fall risk, which implies measurements in walking speed, balance, power and muscle strength, in institutionalized older adults, through a systematic review. Method: a systematic bibliographical search was carried out in PUBMED, one of the largest electronic availability databases in the world. Experimental clinical studies in English were selected and carried out for a period of five years. Results: Six studies were detected. Among the main findings, vibration training improved walking speed, balance, bone density, power and muscle strength, in combination with another type of exercise or individually, as well. Conclusion: vibration training in institutionalized older adults reduces fall risk for this age group.