Open Access
Exercise as therapeutic agent to improve intrinsic capacity in older adults
(Asociación Española de Ciencias del Deporte, 2018) Izquierdo Redín, Mikel; Ciencias de la Salud; Osasun Zientziak
Frailty has emerged as one of the most relevant clinical syndromes, due to its direct relationship with adverse health effects such as physical and functional decline and institutionalization. Physical inactivity has been argued to be a key factor contributing to the onset of muscle mass and function decline (i.e. sarcopenia), which in turn appears to be a vital aspect related to frailty. Deterioration in muscular strength and mass, cardiovascular resistance and balance leads to a decrease in daily life activities, a higher risk of falling and a loss of independence, among other consequences. The effects of exercise are potentially similar to those that can be achieved with medication and are even better, with barely any adverse effects when aiming to prevent cardiovascular disease, decrease the risk of death, prevent diabetes and obesity and improve muscular function and quality of life. Multicomponent physical exercise programs and, in particular, strength training are the most effective interventions for delaying disability and other adverse events. Likewise, their use has been proven in other fields which are frequently associated with this syndrome such as falls, cognitive deterioration and depression.
Open Access
Functional and cognitive impairment prevention through early physical activity for geriatric hospitalized patients: study protocol for a randomized controlled trial
(BioMed Central, 2015) Martínez Velilla, Nicolás; Casas Herrero, Álvaro; Zambom Ferraresi, Fabrício; Suárez, Nacho; Alonso Renedo, Javier; Cambra Contin, Koldo; López Sáez de Asteasu, Mikel; Fernández Echeverría, Nuria; Gonzalo Lázaro, María; Izquierdo Redín, Mikel; Ciencias de la Salud; Osasun Zientziak; Gobierno de Navarra / Nafarroako Gobernua, 2186/2014
Background: Frail older adults have reduced functional and physiological reserves, rendering them more vulnerable to the effects of hospitalization, which frequently results in failure to recover from the pre-hospitalization functional loss, new disability or even continued functional decline. Alternative care models with an emphasis on multidisciplinary and continuing care units are currently being developed. Their main objective, other than the recovery of the condition that caused admission, is the prevention of functional decline. Many studies on functional decline have discussed the available evidence regarding the effectiveness of acute geriatric units. Despite the theoretical support for the idea that mobility improvement in the hospitalized patient carries multiple benefits, this idea has not been fully translated into clinical practice. Methods/design: This study is a randomized clinical trial conducted in the Department of Geriatrics of a tertiary public hospital with 35 beds allocated. Hospitalized patients who meet the inclusion criteria will be randomly assigned to the intervention or control group. The intervention will consist of a multicomponent exercise training programme, which will be composed of supervised progressive resistance exercise training, balance-training, and walking for 5–7 consecutive days. During the training period, patients will be trained in 20 min sessions twice a day (morning and evening). Discussion: Functional and cognitive impairment after and during acute hospitalization in older adults is a major determinant of the later need for health resources. If our hypothesis is correct and shows that a multicomponent, individualized and progressive exercise programme provides effective therapy for improving the functional capacity of acute elderly patients hospitalized for medical pathology versus conventional care, a change of the current system of hospitalization of elderly patients with medical conditions may be justified.
Open Access
Strength and endurance training prescription in healthy and frail elderly
(International Society on Aging and Disease (ISOAD), 2014) Lusa Cadore, Eduardo; Pinto, Ronei Silveira; Bottaro, Martim; Izquierdo Redín, Mikel; Ciencias de la Salud; Osasun Zientziak
Aging is associated with declines in the neuromuscular and cardiovascular systems, resulting in an impaired capacity to perform daily activities. Frailty is an age-associated biological syndrome characterized by decreases in the biological functional reserve and resistance to stressors due to changes in several physiological systems, which puts older individuals at special risk of disability. To counteract the neuromuscular and cardiovascular declines associated with aging, as well as to prevent and treat the frailty syndrome, the strength and endurance training seems to be an effective strategy to improve muscle hypertrophy, strength and power output, as well as endurance performance. The first purpose of this review was discuss the neuromuscular adaptations to strength training, as well as the cardiovascular adaptations to endurance training in healthy and frail elderly subjects. In addition, the second purpose of this study was investigate the concurrent training adaptations in the elderly. Based on the results found, the combination of strength and endurance training (i.e., concurrent training) performed at moderate volume and moderate to high intensity in elderly populations is the most effective way to improve both neuromuscular and cardiorespiratory functions. Moreover, exercise interventions that include muscle power training should be prescribed to frail elderly in order to improve the overall physical status of this population and prevent disability.
Open Access
The influence of ACE ID and ACTN3 R577X polymorphisms on lower-extremity function in older women in response to high-speed power training
(BioMed Central, 2013) Pereira, Ana; Costa, Aldo M.; Leitão, José C.; Monteiro, António M.; Izquierdo Redín, Mikel; Silva, António J.; Bastos, Estela; Marqués, Mário C.; Ciencias de la Salud; Osasun Zientziak
Background: We studied the influence of the ACE I/D and ACTN3 R577X polymorphisms (single or combined) on lower-extremity function in older women in response to high-speed power training. Methods: One hundred and thirty-nine healthy older Caucasian women participated in this study (age: 65.5 ± 8.2 years, body mass: 67.0 ± 10.0 kg and height: 1.57 ± 0.06 m). Walking speed (S10) performance and functional capacity assessed by the “get-up and go” (GUG) mobility test were measured at baseline (T1) and after a consecutive 12-week period of high-speed power training (40-75% of one repetition maximum in arm and leg extensor exercises; 3 sets 4–12 reps, and two power exercises for upper and lower extremity). Genomic DNA was extracted from blood samples, and genotyping analyses were performed by PCR methods. Genotype distributions between groups were compared by Chi-Square test and the gains in physical performance were analyzed by two-way, repeated-measures ANOVA. Results: There were no significant differences between genotype groups in men or women for adjusted baseline phenotypes (P > 0.05). ACE I/D and ACTN3 polymorphisms showed a significant interaction genotype-training only in S10 (P = 0.012 and P = 0.044, respectively) and not in the GUG test (P = 0.311 and P = 0.477, respectively). Analyses of the combined effects between genotypes showed no other significant differences in all phenotypes (P < 0.05) at baseline. However, in response to high-speed power training, a significant interaction on walking speed (P = 0.048) was observed between the “power” (ACTN3 RR + RX & ACE DD) versus “non-power” muscularity-oriented genotypes (ACTN3 XX & ACE II + ID)]. Conclusions: Thus, ACE I/D and ACTN3 R577X polymorphisms are likely candidates in the modulation of exercise-related gait speed phenotype in older women but not a significant influence in mobility traits.
Open Access
Effects of different concurrent resistance and aerobic training frequencies on muscle power and muscle quality in trained elderly men: a randomized clinical trial
(Aging and Disease, 2016) Ferrari, Rodrigo; Fuchs, Sandra C.; Kruel, Luiz Fernando Martins; Lusa Cadore, Eduardo; Alberton, Cristine Lima; Pinto, Ronei Silveira; Radaelli, Régis; Schoenell, Maira; Izquierdo Redín, Mikel; Tanaka, Hirofumi; Umpierre, Daniel; Ciencias de la Salud; Osasun Zientziak
Muscle power is a strong predictor of functional status in the elderly population and is required to perform different daily activities. To compare the effects of different weekly training frequencies on muscle power and muscle quality induced by concurrent training (resistance + aerobic) in previously trained elderly men. Twenty-four trained elderly men (65 ± 4 years), previously engaged in a regular concurrent training program, three times per week, for the previous five months, were randomly allocated to concurrent training programs in which training was performed either twice a week (2·week-1, n = 12) or three times per week (3·week-1, n = 12). The groups trained with an identical exercise intensity and volume per session for 10 weeks. Before and after the exercise training, we examined muscle power, as estimated by countermovement jump height; knee extensor isokinetic peak torque at 60 and 180o.s-1; and muscle quality, a quotient between the one-repetition maximum of the knee extensors and the sum of quadriceps femoris muscle thickness determined by ultrasonography. Additionally, as secondary outcomes, blood pressure and reactive hyperemia were evaluated. Two-way ANOVA with repeated measures were used and statistical significance was set at α = 0.05. Muscular power (2·week-1: 7%, and 3·week-1: 10%) and muscle quality (2·week-1: 15%, and 3·week-1: 8%) improved with the concurrent exercise training (p < 0.001) but with no differences between groups. The isokinetic peak torque at 60 (2·week-1: 4%, and 3·week-1: 2%) and 180o.s-1 (2·week-1: 7%, and 3·week-1: 1%) increased in both groups (p = 0.036 and p=0.014, respectively). There were no changes in blood pressure or reactive hyperemia with the concurrent training. Concurrent training performed twice a week promotes similar adaptations in muscular power and muscle quality when compared with the same program performed three times per week in previously trained elderly men.
Open Access
Systematic review and meta-analysis of randomized, controlled trials on preoperative physical exercise interventions in patients with non-small-cell lung cancer
(MDPI, 2019) Rosero Rosero, Ilem Dayana; Ramírez Vélez, Robinson; Lucía, Alejandro; Martínez Velilla, Nicolás; Santos Lozano, Alejandro; Valenzuela, Pedro L.; Morilla Ruiz, Idoia; Izquierdo Redín, Mikel; Ciencias de la Salud; Osasun Zientziak
Preoperative physical exercise protocols prior to cancer surgery increased in popularity over recent years; however, the beneficial effect of such protocols is not well established, with conflicting results reported. We conducted a systematic review and meta-analysis of randomized controlled trials (RCTs) to assess the effects of different modalities or combinations of preoperative exercise interventions and/or prehabilitation multicomponent training in patients with non-small-cell lung cancer (NSCLC) after surgery on the outcomes related to functional capacity, mental wellness and medical care. We searched in OVID Embase, Pubmed, Cochrane Library, CINAHL, Scopus, and Web of Science. Characteristics of studies and program results and outcome data were extracted. Changes between the intervention and control groups, from baseline to follow-up (standardized mean difference (SMD) or relative risk (RR) with 95% confidence interval (CI) for each intervention was pooled using weighted random-effects models). A total of 676 participants from 10 RCTs were included in the final analysis (aerobic training + inspiratory muscle training, n = 5; aerobic training + strength training + inspiratory muscle training, n = 2; aerobic training + strength training, n = 1; multicomponent training, n = 1; aerobic training alone, n = 1). The results showed intervention-induced improvement in walking endurance (SMD = 0.27; 95% CI, 0.11 to 0.44; I2= 0.0%), peak exercise capacity (SMD = 0.78; 95% CI, 0.35 to 1.21; I2= 76.7%), dyspnoea (SMD = −0.30; 95% CI, −0.51 to −0.10; I2 = 0.0%), risk of hospitalization (SMD = −0.58; 95% CI, −0.97 to −0.20; I2= 70.7%), and postoperative pulmonary complications (relative risk (RR) = 0.50; 95% CI, 0.39 to 0.66; I2= 0.0%). For the functional capacity and medical care parameters, preoperative combined aerobic, resistance, and inspiratory muscle training was shown to be effective if comprising one to four weeks, performing 1–3 sessions per week, with moderate intensity (50% for endurance capacity). Further studies with larger samples and higher methodological quality are needed to clarify the potential benefits of preoperative exercise training for patients with NSCLC.
Open Access
Ejercicio físico en el anciano frágil: una manera eficaz de prevenir la dependencia
(Universidad Europea de Madrid, 2014) Izquierdo Redín, Mikel; Lusa Cadore, Eduardo; Casas Herrero, Álvaro; Ciencias de la Salud; Osasun Zientziak
Los beneficios del ejercicio físico en el envejecimiento y, específicamente, en la fragilidad han sido objeto de reciente investigación científica. En el anciano, la práctica de actividad física regular se asocia a una disminución del riesgo de mortalidad, de enfermedades crónicas, institucionalización, deterioro cognitivo y funcional. La práctica de ejercicio físico es la intervención más eficaz para retrasar la discapacidad y los eventos adversos que asocia habitualmente el síndrome de la fragilidad. De manera más concreta, el tipo de ejercicio físico más beneficioso en el anciano frágil es el denominado “entrenamiento multicomponente”. Este tipo de programas combina entrenamiento de fuerza, resistencia, equilibrio y marcha, y es con el que más mejorías se ha demostrado en la capacidad funcional, que es un elemento fundamental para el mantenimiento de la independencia en las actividades básicas de la vida diaria (ABVD) de los ancianos. Los objetivos deberían centrarse, por tanto, en mejorar dicha capacidad funcional a través de mejorías en el equilibrio y la marcha, así como mediante la disminución del riesgo y del número de caídas. Para la obtención de estos objetivos, el diseño de un programa de ejercicio físico en el anciano frágil debe acompañarse necesariamente de recomendaciones sobre variables tales como la intensidad, la potencia, el volumen y la frecuencia de entrenamiento ideales en esta población.
Open Access
The chronic effects of low- and high-intensity resistance training on muscular fitness in adolescents
(Public Library of Science, 2016) Assunção, Ari R.; Bottaro, Martim; Ferreira Junior, João B.; Izquierdo Redín, Mikel; Lusa Cadore, Eduardo; Gentil, Paulo; Ciencias de la Salud; Osasun Zientziak
To compare the effects of high-load, low-repetition maximum (LRM) and low-load, high-repetition maximum (HRM) resistance training regimens on muscular fitness in untrained adolescents. Forty-five untrained adolescents of both sexes (13.7±0.8 years; 161.3±7.5 cm, 56.8±13.4 kg) were randomly assigned into one of three groups: 1) LRM (n = 17): volunteers performed three sets of 4-6-repetition maximum (RM); 2) HRM (n = 16): volunteers performed three sets of 12–15 RM; and 3) control (CON, n = 12). Training was performed two times a week for 9 weeks. After training, there were significant increases in 1 RM chest press (LRM = 14.8%and HRM = 14.2%, p<0.05) and squat (LRM = 26.4%and HRM = 25.7%, p<0.05), with no differences between the LRM and HRM groups (p>0.05). Additionally, muscular endurance increased significantly for the chest press (LRM = 14.5% and HRM = 21.8%, p<0.05) and squat test (LRM = 31.4% and HRM = 32.4%, p<0.05) following resistance training, with no difference between the LRM and HRM groups (p>0.05). These results suggest that both high-load, low-repetition and moderate-load, high-repetition resistance training can be prescribed to improve muscular fitness in untrained adolescents.