Posterior Thigh Foam Rolling Increases Knee Extension Fatigue and Passive Shoulder Range-of-Motion.

Monteiro, ER, Costa, PB, Corrêa Neto, VG, Hoogenboom, BJ, Steele, J, and da Silva Novaes, J. Posterior thigh foam rolling increases knee extension fatigue and passive shoulder range-of-motion. J Strength Cond Res 33(4): 987-994, 2019-The purpose of this study was to analyze the acute effects of different foam rolling (FR) volumes on knee extensors fatigue and shoulder passive range-of-motion (PROM). Twelve recreationally active women were recruited for participation in 2 experiments separated by 3 weeks, and the same subjects performed all procedures in each experiment. In experiment 1, subjects performed 3 sets of knee extensions using a predetermined 10 repetition maximum load to momentary concentric failure: control condition (CG) with passive rest and 2 FR conditions for the hamstrings using 2 volumes (60 and 120 seconds; FR60 and FR120, respectively). Experiment 2 consisted of 2 shoulder flexion and extension baseline PROM tests. Following baseline measures, subjects performed a single 60-second bout of FR on the hamstrings. Outcome PROM measures were measured through manual goniometry immediately (post-0), 10 minutes (post-10), 20 minutes (post-20), 30 minutes (post-30), 24 hours (post-24), and 48 hours (post-48) after the intervention to assess the effects on PROM over an extended period. Fatigue index indicated significantly greater fatigue resistance for CG when compared with FR60 (p = 0.035; [INCREMENT]% = 6.49) and FR120 (p = 0.002; [INCREMENT]% = 9.27), and there were no significant differences between FR60 and FR120 (p = 0.513; [INCREMENT]% = 2.78). Shoulder flexion PROM increased in post-0 as compared to baseline 1 (p = 0.002; d = 1.58), baseline 2 (p < 0.001; d = 1.92), and baseline higher measurement (p < 0.001; d = 1.59) and remained increased for post-10 as compared to baseline 2 (p = 0.017; d = 1.55). Shoulder extension PROM increased in post-0 as compared to baseline 1 (p < 0.001; d = 2.61), baseline 2 (p < 0.001; d = 2.83), and baseline higher measurement (p < 0.001; d = 2.59) and remained increased for post-10 as compared to baseline 1 (p < 0.001; d = 1.93), baseline 2 (p < 0.001; d = 2.16), and baseline higher measurement (p < 0.001; d = 1.91) and post-20 as compared to baseline 1 (p = 0.008; d = 1.58), baseline 2 (p = 0.001; d = 1.85), and baseline higher measurement (p = 0.011; d = 1.55). Foam rolling volumes equal to or greater than 60 seconds are detrimental to the ability to continually produce force in the lower extremity and should not be applied to the hamstrings muscle group between sets of knee extensions. PROM results indicate that FR applied to the hamstrings demonstrates an increase in both shoulder flexion and extension PROM. This work may have important clinical (rehabilitation) implications, as it demonstrates global effects of FR on functional outcomes.

Efecto del entrenamiento de fuerza sobre la autonomía funcional en mujeres mayores sanas / Effects of a strength training program on functional status in healthy elderly women

Objetivo: evaluar el efecto de un programa de entrenamiento de fuerza durante 20 semanas sobre la autonomía funcional de mujeres mayores saludables. Material y métodos: participaron 24 mujeres mayores de 65 años divididas en grupo experimental (GE; n = 13) y grupo control (GC; n = 11). El GE fue sometido a 20 semanas de intervención constituida por 2 fases de entrenamiento: extensión de rodillas, supino en posición sentada, tirón en la polea, flexión unilateral de rodillas, flexión parcial de tronco (abdominal), trabajo de bíceps y tríceps en la polea. Se determinó la autonomía funcional mediante una batería de pruebas incluidas en el protocolo GDLAM antes del ejercicio y en la 4.a y 20.a semana. Se compararon los resultados mediante ANOVA multivariada para medidas repetidas, siguiendo la prueba post hoc de Tukey para muestras desiguales, adoptando un nivel de significación estadística p 5,86; p < 0,005, respectivamente) en relación al GC. Conclusión: la realización de entrenamiento de fuerza durante 20 semanas muestra una mejora en la autonomía funcional para realización de las actividades de la vida diaria en mujeres mayores sanas. Cabe indicar ejercicio específico en grupos seleccionados de población mayor con riesgo de pérdida de autonomía

Objective: to evaluate the effect of a 20-week strength training program on functional status in healthy elderly women. Material and methods: twenty-four women aged more than 65 years old participated in this study. The women were divided into an experimental group (EG, n = 13) and a control group (CG, n = 11). The EG underwent a 20-week intervention consisting of two training phases: knee extension, supine in a sitting position, machine lat pull-down, unilateral knee flexion, partial flexion of the trunk (abdominal), and biceps curl and triceps extension against resistance. Functional status was determined through a battery of tests included in the GDLAM protocol before exercise and at weeks 4 and 20. The results were compared through multivariate repeated measures ANOVA, with the post-hoc Tukey test for unequal samples. Statistical significance was set at p 5.86; p < 0.005, respectively) in comparison with the CG. Conclusion: The 20-week strength training program improved functional autonomy in activities of daily living in healthy elderly women. Specific exercises should be indicated in selected groups of the elderly population at risk of loss of autonomy