High-velocity resistance training mitigates physiological and functional impairments in middle-aged and older adults with and without mobility-limitation

Abstract

After the intervention, quadriceps muscle thickness, 1RM, and sEMG improved in all three groups (all p < 0.05), whereas muscle quality improved only in middle-aged and older participants (p ≤ 0.001), and MVIC only in middle-aged and mobility-limited older adults (p < 0.05). With a few exceptions, peak power improved in all groups from 30-90% 1RM (p < 0.05) both when tested relative to pre-training or post-training 1RM workloads (all p < 0.05). Both mobility-limited older adults and older adults improved their short physical performance battery score (p < 0.05). Chair stand, stair climb, maximal gait speed, and timed up-andgo performance, on the other hand, improved in all three groups (p < 0.05), but no change was observed for habitual gait speed and 6-min walk test performance. Overall, our results demonstrate that a HVRT intervention can build a stronger foundation in middle-aged individuals so that they can better deal with age-related impairments at the same time that it can mitigate already present physiological and functional impairments in older adults with and without mobility-limitation.

Impact of Resistance Training Volume on Physical and Perceptual Outcomes of Breast Cancer Survivors Submitted to a Combined Training Program: A Randomized, Single-Blinded Study

“…20 A map of the right thigh of each participant was created to ensure the same transductor position in all subsequent measurements by drawing references of anatomical points and marks on the skin in transparent plastic. 21 The same experienced investigator obtained 3 images from each muscle which were digitized for further analysis using the Image J software (National Institute of Health, version 1.37). MT was determined in each image as the distance between the adipose tissue and the muscle interface for the rectus femoris, vastus lateralis, and vastus medialis muscles; and the distance between the femur and muscle interface for the vastus intermedius.…”

Reflexiones de la prescripción de ejercicio físico en la consulta del médico familiar

“…Para una aproximación inicial, el Pro grama de Actividades Preventivas y Pro moción de la Salud (PAPPS) de la Sociedad Española de Medicina Familiar y Comunitaria (semFYC) propone el consejo breve de actividad física en atención primaria donde se pregunta a los pacientes si por sus condiciones generales, comorbilidades o trabajo pasan más de 2 horas seguidas sentados al día (si son sedentarios) y se determina si son activos o inactivos físicamente (realizan 30 minutos de actividad física moderada como mínimo 5 días por semana) 36,37 . Lo anterior es un buen comienzo en cualquier entorno de consulta externa, como médicos familiares también podemos hacer uso de la entrevista motivacional que contribuye con desenlaces significativos para iniciar actividad física, pudiendo adecuarse en intensidad y frecuencia 38 .…”