Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 12.257
Filtrar
1.
Top Spinal Cord Inj Rehabil ; 27(3): 49-59, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34456546

RESUMO

Objectives: To establish predictive equations for peak torque of muscle groups with totally and partially preserved innervation in individuals with motor complete spinal cord injury (SCI), based on hand dynamometry and strength predictor variables. Methods: The cross-sectional study conducted at a rehabilitation hospital consecutively recruited 108 men and women with SCI. All participants performed maximum peak torque tests for shoulder abduction/adduction (isokinetic), trunk flexion/extension (isometric), and handgrip strength testing (hand dynamometer) to establish predictive peak torque equations. The primary outcomes were peak torque variables. Handgrip strength, age, injury level, time since injury, age at injury, body mass, height, body mass index, and physical activity level were the secondary outcomes used as strength predictor variables. Results: Handgrip strength was a predictor variable for shoulder abduction/adduction peak torque. The best predictive models for shoulder abduction/adduction peak torque exhibited R 2 = 0.57 and R 2 = 0.60, respectively (p ≤ .05). Injury level showed the highest significant predictive capacity for trunk flexion/extension peak torque models (R 2 = 0.38 and R 2 = 0.29; p ≤ .05). Conclusion: Shoulder abduction/adduction peak torque predictive equations may be an alternative for use in an accessible strength tool (hand dynamometry) to evaluate training and rehabilitation programs. Trunk flexion/extension peak torque equations exhibited moderate correlations and high standard error of the estimates and should be used with caution.


Assuntos
Força da Mão/fisiologia , Traumatismos da Medula Espinal/fisiopatologia , Adulto , Estudos Transversais , Feminino , Humanos , Masculino , Força Muscular/fisiologia , Dinamômetro de Força Muscular , Valor Preditivo dos Testes , Torque , Adulto Jovem
2.
Top Spinal Cord Inj Rehabil ; 27(3): 70-82, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34456548

RESUMO

Objectives: To reach agreement on standardized protocols for assessing upper limb strength and grip and pinch force for upper limb reconstructive surgery for tetraplegia. Methods: Selected members of an expert panel composed of international therapists formed at the 2018 International Congress for Upper Limb Surgery for Tetraplegia conducted a literature review of current practice that identified gaps and inconsistencies in measurement protocols and presented to workshop attendees. To resolve discrepancies, a set of questions was presented to workshop attendees who voted electronically. Consensus was set at 75% agreement. Results: For manual muscle testing, consensus was reached for using the Medical Research Council scale, without plus or minus, and the use of resistance through range when testing grade 4 and grade 5 strength. Pectoralis major and serratus anterior should be routinely tested, however there was no consensus on other shoulder muscles. Grip and pinch strength should be tested according to the American Society of Hand Therapists positioning. For grip strength, either the Jamar or Biometrics dynamometer expressed in kilograms should be used. For grip and pinch strength, three measurements should be performed at each testing. No consensus was reached on a device for pinch strength. Conclusion: This work is an important step to enable comparable data in the future. Further consensus methods will work toward developing more comprehensive guidelines in this population. Building international consensus for pre- and postoperative measures of function supports objective evaluation of novel therapies and interpretation of multicenter studies.


Assuntos
Força Muscular/fisiologia , Exame Físico/normas , Quadriplegia/fisiopatologia , Traumatismos da Medula Espinal/fisiopatologia , Extremidade Superior/fisiopatologia , Extremidade Superior/cirurgia , Humanos , Quadriplegia/cirurgia , Procedimentos Cirúrgicos Reconstrutivos , Traumatismos da Medula Espinal/cirurgia
3.
Undersea Hyperb Med ; 48(3): 227-238, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34390627

RESUMO

Background: The optimal timing of hyperbaric oxygen (HBO2) treatments for the best recovery following muscle injury has yet to be determined. Thus, the optimal number and timing of HBO2 treatments for maximal muscle regeneration were explored. Methods: The HBO2 treatment protocol consisted of 2.5 ATA 100% oxygen for 120 minutes. Muscle-injured rats were randomized to one of 10 groups: single HBO2 treatment immediately after injury (HBO 1T day 0), one day (HBO 1T day 1), three days (HBO 1T day 3) and five days (HBO 1T day 5) after injury; three HBO2 treatments from immediately after injury to two days after injury (HBO 3T day 0-2), from one to three days after injury (HBO 3T day 1-3), from three to five days after injury (HBO 3T day 3-5), from five to seven days after injury (HBO 3T day 5-7); five daily HBO2 treatments (HBO 5T); and no treatment (NT). Results: HBO 5T and HBO 3T day 0-2, days 1-3 and days 3-5 significantly promoted CD206-positive cell infiltration, satellite cell differentiation and muscle regeneration compared to the NT group. Conclusion: Five HBO2 treatments and three HBO2 treatments within three days of injury promote muscle regeneration.


Assuntos
Contusões/terapia , Oxigenação Hiperbárica/métodos , Músculo Esquelético/lesões , Células Satélites de Músculo Esquelético/fisiologia , Tempo para o Tratamento , Cicatrização/fisiologia , Animais , Diferenciação Celular , Proliferação de Células/fisiologia , Contusões/fisiopatologia , Oxigenação Hiperbárica/estatística & dados numéricos , Macrófagos/fisiologia , Masculino , Contração Muscular/fisiologia , Força Muscular/fisiologia , Músculo Esquelético/patologia , Músculo Esquelético/fisiologia , Projetos Piloto , Distribuição Aleatória , Ratos , Ratos Wistar
4.
Medicine (Baltimore) ; 100(33): e26989, 2021 Aug 20.
Artigo em Inglês | MEDLINE | ID: mdl-34414979

RESUMO

BACKGROUND: We aimed to test the hypothesis that high-impact aerobics programme, combined with pelvic floor muscle training does not impair pelvic floor muscle function in young active women. METHODS: A randomized control trial was conducted among active nulliparous, sport university students (age 23 ±â€Š3 years, mean ±â€ŠSD). Experimental group (n = 13) attended high-impact aerobics programme, supplemented by pelvic floor muscle training with one biofeedback session, for 6 weeks. The control group (n = 19) did not get any intervention. Before and after the experiment, we assessed pelvic floor muscle function in both groups with surface electromyography using vaginal probes. In both groups, we assessed the participants' quality of life related to pelvic floor functions with the Incontinence Impact Questionnaires. RESULTS: We recorded no impairments in neuromuscular activity of pelvic floor muscles and in quality of life in women regularly performing high-impact aerobics. What is even more positive, after 6 weeks, experimental group presented better skills both in contracting and relaxing their pelvic floor muscles, although the pre-post intervention EMG change was not statistically significant. All participants maintained good quality of life related to pelvic floor functions. CONCLUSIONS: High-impact aerobics, supplemented by pelvic floor muscle training can be recommended for active nulliparas.


Assuntos
Terapia por Exercício/normas , Paridade/fisiologia , Diafragma da Pelve/fisiopatologia , Adulto , Terapia por Exercício/métodos , Terapia por Exercício/estatística & dados numéricos , Feminino , Humanos , Força Muscular/fisiologia , Gravidez
5.
Neurology ; 97(7 Suppl 1): S99-S110, 2021 08 17.
Artigo em Inglês | MEDLINE | ID: mdl-34230196

RESUMO

OBJECTIVE: To determine a suitable outcome measure for assessing muscle strength in neurofibromatosis (NF) type 1 and NF2 clinical trials, we evaluated the intraobserver reliability of handheld dynamometry (HHD) and developed consensus recommendations for its use in NF clinical trials. METHODS: Patients ≥5 years of age with weakness in at least 1 muscle group by manual muscle testing (MMT) were eligible. Maximal isometric muscle strength of a weak muscle group and the biceps of the dominant arm was measured by HHD. An average of 3 repetitions per session was used as an observation, and 3 sessions with rest period between each were performed on the same day by a single observer. Intrasession and intersession intraclass correlation coefficients (ICCs) and coefficients of variation (CVs) were calculated to assess reliability and measurement error. RESULTS: Twenty patients with NF1 and 13 with NF2 were enrolled; median age was 12 years (interquartile range [IQR] 9-17 years) and 29 years (IQR 22-38 years), respectively. By MMT, weak muscle strength ranged from 2-/5 to 4+/5. Biceps strength was 5/5 in all patients. Intersession ICCs for the weak muscles were 0.98 and 0.99 in the NF1 and NF2 cohorts, respectively, and for biceps were 0.97 and 0.97, respectively. The median CVs for average session strength were 5.4% (IQR 2.6%-7.3%) and 2.9% (IQR 2.0%-6.2%) for weak muscles and biceps, respectively. CONCLUSION: HHD performed by a trained examiner with a well-defined protocol is a reliable technique to measure muscle strength in NF1 and NF2. Recommendations for strength testing in NF1 and NF2 trials are provided.


Assuntos
Contração Isométrica/fisiologia , Força Muscular/fisiologia , Debilidade Muscular/fisiopatologia , Músculo Esquelético/fisiologia , Adolescente , Adulto , Criança , Humanos , Masculino , Pessoa de Meia-Idade , Dinamômetro de Força Muscular , Debilidade Muscular/diagnóstico , Neurofibromatoses/fisiopatologia
6.
Maturitas ; 150: 7-13, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34274077

RESUMO

OBJECTIVES: The independent role of muscular strength in the prevention of chronic disease is increasingly being recognized. However, no cohort study has assessed the relationship between handgrip strength and the incidence of hypertension among the middle-aged and older population. The aim of this prospective cohort study was to investigate whether handgrip strength is related to incident hypertension among people aged 40 years and over. STUDY DESIGN: This prospective cohort study (n = 8,480) was performed between 2013 and 2019 as part of the Tianjin Chronic Low-grade Systemic Inflammation and Health (TCLSIH) Cohort Study, Tianjin, China. MAIN OUTCOME MEASURES: Participants without baseline hypertension were followed up for ~6 years (median 4.0 years). Hypertension was defined according to the JNC7 criteria. Handgrip strength was measured using a hydraulic handheld dynamometer. Adjusted Cox proportional hazards regression models were used to assess the relationships between weight-adjusted handgrip strength and the risk of incident hypertension. RESULTS: The incidence rate of hypertension per 1000 person-years was 70. The fully adjusted hazards ratios (95% confidence interval) of the incidence of hypertension for increasing quartiles of weight-adjusted handgrip strength were: 1.00(reference), 0.84 (0.75-0.95), 0.78 (0.69-0.88), and 0.66 (0.58-0.75) (P for trend<0.0001). Moreover, the adjusted hazards ratio (95% confidence interval) of incident hypertension for per unit increase in weight-adjusted handgrip strength was 0.17 (0.10-0.27) (P<0.0001). Similar results were observed in males and females. CONCLUSIONS: The present cohort study is the first to find that high weight-adjusted handgrip strength, but not absolute handgrip strength, is significantly and independently related to low risk of incident hypertension among the middle-aged and older population.


Assuntos
Força da Mão/fisiologia , Hipertensão/diagnóstico , Hipertensão/epidemiologia , Força Muscular/fisiologia , Adulto , China/epidemiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos
7.
Nutrients ; 13(6)2021 Jun 10.
Artigo em Inglês | MEDLINE | ID: mdl-34200533

RESUMO

Aging and osteoarthritis are associated with high risk of muscle mass loss, which leads to physical disability; this loss can be effectively alleviated by diet (DI) and exercise (ET) interventions. This study investigated the relative effects of different types of diet, exercise, and combined treatment (DI+ET) on muscle mass and functional outcomes in individuals with obesity and lower-limb osteoarthritis. A comprehensive search of online databases was performed to identify randomized controlled trials (RCTs) examining the efficacy of DI, ET, and DI+ET in patients with obesity and lower-extremity osteoarthritis. The included RCTs were analyzed through network meta-analysis and risk-of-bias assessment. We finally included 34 RCTs with a median (range/total) Physiotherapy Evidence Database score of 6.5 (4-8/10). DI plus resistance ET, resistance ET alone, and aerobic ET alone were ranked as the most effective treatments for increasing muscle mass (standard mean difference (SMD) = 1.40), muscle strength (SMD = 1.93), and walking speed (SMD = 0.46). Our findings suggest that DI+ET is beneficial overall for muscle mass in overweight or obese adults with lower-limb osteoarthritis, especially those who are undergoing weight management.


Assuntos
Exercício Físico/fisiologia , Músculo Esquelético/patologia , Músculo Esquelético/fisiopatologia , Osteoartrite/complicações , Sobrepeso/complicações , Ensaios Clínicos Controlados Aleatórios como Assunto , Sarcopenia/complicações , Adulto , Idoso , Dieta , Seguimentos , Humanos , Pessoa de Meia-Idade , Força Muscular/fisiologia , Tamanho do Órgão , Osteoartrite/fisiopatologia , Sobrepeso/fisiopatologia , Viés de Publicação , Análise de Regressão , Risco , Sarcopenia/fisiopatologia , Resultado do Tratamento , Caminhada/fisiologia
8.
FASEB J ; 35(8): e21773, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-34324735

RESUMO

Acute hypoxia has previously been suggested to potentiate resistance training-induced hypertrophy by activating satellite cell-dependent myogenesis rather than an improvement in protein balance in human. Here, we tested this hypothesis after a 4-week hypoxic vs normoxic resistance training protocol. For that purpose, 19 physically active male subjects were recruited to perform 6 sets of 10 repetitions of a one-leg knee extension exercise at 80% 1-RM 3 times/week for 4 weeks in normoxia (FiO2 : 0.21; n = 9) or in hypoxia (FiO2 : 0.135, n = 10). Blood and skeletal muscle samples were taken before and after the training period. Muscle fractional protein synthetic rate was measured over the whole period by deuterium incorporation into the protein pool and muscle thickness by ultrasound. At the end of the training protocol, the strength gain was higher in the hypoxic vs the normoxic group despite no changes in muscle thickness and in the fractional protein synthetic rate. Only early myogenesis, as assessed by higher MyoD and Myf5 mRNA levels, appeared to be enhanced by hypoxia compared to normoxia. No effects were found on myosin heavy chain expression, markers of oxidative metabolism and lactate transport in the skeletal muscle. Though the present study failed to unravel clearly the mechanisms by which hypoxic resistance training is particularly potent to increase muscle strength, it is important message to keep in mind that this training strategy could be effective for all athletes looking at developing and optimizing their maximal muscle strength.


Assuntos
Proteínas Musculares/metabolismo , Força Muscular/fisiologia , Músculo Esquelético/anatomia & histologia , Oxigênio/metabolismo , Treinamento de Força/métodos , Regulação da Expressão Gênica , Humanos , Masculino , Músculo Esquelético/fisiologia , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Células Satélites de Músculo Esquelético/fisiologia , Adulto Jovem
9.
Medicine (Baltimore) ; 100(25): e26357, 2021 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-34160406

RESUMO

ABSTRACT: To investigate the effect of core stability training on nonspecific low back pain (NSLBP) in nurses.The data were collected retrospectively by reviewing the patient's medical records and pain questionnaires in our rehabilitation center. A total of 40 nurses with NSLBP were included and divided into observation group and control group. Each group were given routine health education for NSLBP. Core stability training was performed in observation group for 4 weeks. Surface electromyography (sEMG) evaluation of erector spine and multifidus muscle, pain Numeric Rating Scale (NRS) and Japanese Orthopaedic Association (JOA) scores were evaluated and analyzed before and 4 weeks after intervention.There was no significant difference of NRS score and JOA score between two groups before intervention (P > .05, respectively). The NRS and JOA scores were significantly improved in both two groups after 4 weeks of intervention (P < .05, respectively). Moreover, the improvement of NRS and JOA scores in the observation group were better than those of the control group (P < .05, respectively). No significant difference of average electromyography (AEMG) or median frequency (MF) were noted between the healthy side and the affected side in both groups before or after intervention (P > .05, respectively). After 4 weeks of intervention, the AEMG of the healthy and the affected side of the two groups showed an improved trend without significant difference (P > .05, respectively). The MF of affected side was significantly higher 4 weeks after intervention than those before treatment in the observation and control group (P < .05, respectively).Core stability training can alleviate pain, improve the fatigue resistance of the core muscles and the balance of the functions of bilateral multifidus muscles in nurses with NSLBP.


Assuntos
Terapia por Exercício/métodos , Dor Lombar/terapia , Força Muscular/fisiologia , Enfermeiras e Enfermeiros , Músculos Paraespinais/fisiopatologia , Adulto , Estudos de Casos e Controles , Eletromiografia , Feminino , Seguimentos , Humanos , Dor Lombar/diagnóstico , Dor Lombar/fisiopatologia , Masculino , Medição da Dor , Estudos Retrospectivos , Resultado do Tratamento , Adulto Jovem
10.
J Clin Neurosci ; 89: 8-14, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-34119299

RESUMO

It remains controversial whether preoperative low muscle mass affects clinical outcomes after lumbar surgery. Previous studies evaluated outcomes such as pain, quality of life, and disability, but none investigated preoperative low muscle mass and psychological factors. The purpose of this study was to clarify the association between preoperative low muscle mass and postoperative psychological factors in lumbar spinal stenosis (LSS). A longitudinal analysis was performed in 85 consecutive preoperative patients with LSS. Demographic data, leg pain, low back pain, Japanese Orthopaedic Association score, Pain Catastrophizing Scale (PCS) score, Fear-Avoidance Beliefs Questionnaire on Physical Activity (FABQ-PA) score, Hospital Anxiety and Depression Scale (HADS) score, walking velocity, grip strength, and appendicular lean mass were assessed. Muscle mass was measured using bioelectrical impedance analysis. Patients were divided into two groups based on skeletal muscle mass index. These clinical outcomes were evaluated preoperatively and 1 year after surgery. In the 73 patients who were analyzed 1 year after surgery, the prevalence of preoperative low muscle mass was 21.9%. The normal muscle mass group showed significantly improved PCS, FABQ-PA, HADS-anxiety, and HADS-depression scores 1 year after surgery. The low muscle mass group did not demonstrate significantly improved PCS, FABQ-PA, or HADS-depression scores, and had a significantly smaller increase in the FABQ-PA score than the normal muscle mass group. Multivariate analysis showed that low muscle mass was significantly related to change in FABQ-PA score. Our results suggest that preoperative low muscle mass hinders improvement in fear-avoidance beliefs 1 year after surgery.


Assuntos
Medo/psicologia , Vértebras Lombares/cirurgia , Força Muscular/fisiologia , Cuidados Pré-Operatórios/psicologia , Estenose Espinal/psicologia , Estenose Espinal/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Catastrofização/diagnóstico , Catastrofização/psicologia , Pessoas com Deficiência/psicologia , Impedância Elétrica , Feminino , Humanos , Estudos Longitudinais , Dor Lombar/diagnóstico , Dor Lombar/psicologia , Dor Lombar/cirurgia , Masculino , Pessoa de Meia-Idade , Cuidados Pré-Operatórios/tendências , Qualidade de Vida/psicologia , Estenose Espinal/diagnóstico
11.
Nutrients ; 13(5)2021 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-34062828

RESUMO

The present study aimed to determine the effect of detraining on muscle quality (MQ) in older men with osteosarcopenia. Forty-three community-dwelling older men (78 ± 4 years) were randomly allocated to a consistently supervised high-intensity resistance exercise training (HIRT) group (n = 21) or a control group (CG, n = 22). The HIRT scheduled a periodized single set protocol twice weekly. After the intervention, the men were subjected to six months of detraining. Muscle quality (MQ), defined as maximum isokinetic hip/leg extensor strength per unit of mid-thigh intra-fascia volume, was determined by magnetic resonance imaging (MRI) or per unit of thigh muscle mass assessed by dual-energy X-ray absorptiometry (DXA). Intention-to-treat analysis with multiple imputations was applied. We observed significant exercise effects for MQ (p = 0.001). During detraining, the HIRT group lost about one-third of the intervention-induced gain and displayed significantly (p = 0.001) higher MQ reductions compared to the CG. Nevertheless, after training and detraining, the overall intervention effect on MQ remained significant (p ≤ 0.004). In summary, six months of absence from HIRT induce a significant deleterious effect on MQ in older osteosarcopenic men. We conclude that intermitted training programs with training breaks of six months and longer should be replaced by largely continuous exercise programs, at least when addressing MQ parameters.


Assuntos
Doenças Ósseas Metabólicas/fisiopatologia , Força Muscular/fisiologia , Treinamento de Força/métodos , Sarcopenia/fisiopatologia , Suspensão de Tratamento , Absorciometria de Fóton , Idoso , Idoso de 80 Anos ou mais , Doenças Ósseas Metabólicas/diagnóstico por imagem , Doenças Ósseas Metabólicas/terapia , Feminino , Seguimentos , Humanos , Vida Independente , Imageamento por Ressonância Magnética , Masculino , Músculo Esquelético/diagnóstico por imagem , Músculo Esquelético/fisiopatologia , Sarcopenia/diagnóstico por imagem , Sarcopenia/terapia , Coxa da Perna/diagnóstico por imagem , Coxa da Perna/fisiopatologia , Fatores de Tempo
12.
J Sports Sci ; 39(sup1): 73-80, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34092197

RESUMO

This study examined the reliability of instrumented trunk assessment methods across two experiments to develop and improve evidence-based classification in Para swimming. Trunk coordination, range of motion (ROM), and strength were assessed in 38 non-disabled participants. Each test battery was completed on two occasions to determine inter-session reliability. Intra-session reliability was also determined in Experiment Two. Absolute agreement of two-way mixed intraclass correlation coefficients (ICC 3,1) was calculated to assess reliability. Standard errors of measurement (SEMs) were also reported to facilitate comparisons between different outcomes. Trunk coordination measures had low-to-moderate reliability (inter-session ICCs = 0.00-0.60; intra-session ICCs = 0.14-0.65) and variable SEMs (5-60%). Trunk ROM demonstrated moderate-to-excellent reliability (inter-session ICCs = 0.61-0.93; intra-session ICCs = 0.87-0.95) and good SEMs (<10%). Trunk strength measures demonstrated good-to-excellent reliability (ICCs = 0.87-0.98) and good SEMs (<10%). The strength values obtained for the load cell and hand-held dynamometer (HHD) were significantly different from each other with the HHD underestimating strength. Modifications provided in Experiment Two improved the reliability of strength and ROM assessments but did not improve coordination measures. Further research involving para swimmers is required to establish the validity of the methods.


Assuntos
Força Muscular/fisiologia , Desempenho Psicomotor/fisiologia , Amplitude de Movimento Articular/fisiologia , Natação/fisiologia , Tronco/fisiologia , Adulto , Fenômenos Biomecânicos/fisiologia , Voluntários Saudáveis , Humanos , Dinamômetro de Força Muscular , Paratletas/classificação , Reprodutibilidade dos Testes , Postura Sentada , Coluna Vertebral , Esportes para Pessoas com Deficiência/classificação , Esportes para Pessoas com Deficiência/fisiologia , Natação/classificação , Adulto Jovem
13.
J Sports Med Phys Fitness ; 61(6): 803-809, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-34110119

RESUMO

BACKGROUND: This study compared the effect of treadmill running on subsequent upper limb exercise performance in young men. METHODS: Seventeen young men (24.8±5.2 years) completed a: 1) bench press resistance exercise control session; 2) treadmill interval running protocol followed by the bench press session; and 3) treadmill continuous running protocol followed by the bench press session. Four sets of the bench press exercise were performed at 80% of 1RM up to volitional failure. In the interval protocol, eight sprints of 40s at 100% of the velocity of maximal oxygen uptake, with 20s of passive interval between them were performed, whereas in the continuous protocol 30-min of treadmill running at 90% of the heart rate corresponding to second ventilatory threshold was performed. The number of maximal repetitions completed in each set and condition was recorded and compared using a two-way repeated measures ANOVA. RESULTS: The interval protocol (18.7±4.9 repetitions) resulted in a reduction in the number of bench press repetitions compared to the control protocol (21.4±5.4 repetitions) (P=0.002); whereas continuous running did not affect the bench press performance (20.6±4.4 repetitions). The total number of repetitions reduced from set to set in all protocols (P<0.001). CONCLUSIONS: The results evidenced an impairment in the upper limb strength performance after high intensity interval, but not moderate intensity continuous running, which has implication for concurrent training planning and prescription.


Assuntos
Treinamento Intervalado de Alta Intensidade/efeitos adversos , Corrida/fisiologia , Extremidade Superior/fisiologia , Levantamento de Peso/fisiologia , Adulto , Humanos , Masculino , Força Muscular/fisiologia , Músculo Esquelético/fisiologia , Adulto Jovem
14.
Medicine (Baltimore) ; 100(22): e26184, 2021 Jun 04.
Artigo em Inglês | MEDLINE | ID: mdl-34087883

RESUMO

ABSTRACT: The aim of this study was to assess the physical activity level of health care professionals, as well as the differences by sex, age, academic background, and among different health care professions.This is an cross-sectional study.Health care settings in the Valencian Community, Spain.A total of 647 health care professionals.Physical activity was assessed with the European Health Interview Survey-Physical Activity Questionnaire (EHIS-PAQ) that includes the assessment of work-related physical activity, transport-related physical activity, health-enhancing physical activity, muscle-strengthening physical activity, and total physical activity.93.51% of all health care professionals were physically active at work. Transport-related physical activity and health-enhancing physical activity were significantly lower in women (21.62% vs 41.86%, P < .001; and 50.19% vs 68.99%, P < .001, respectively). In addition, compliance with health-enhancing and muscle-strengthening physical activity guidelines were lower in older professionals (42.7% vs 61.84%, P < .001; and 47.57% vs 61.84%, P < .001, respectively). Those with higher education were more compliant with health-enhancing and muscle-strengthening physical activity guidelines (58.55% vs 45.69%, P = .002; and 60.24% vs 48.28%, P = .003, respectively). Moreover, 67.98% of physiotherapists performed health-enhancing physical activity and 67.54% muscle-strengthening physical activity regularly, and significant differences in all outcomes were observed compared to the rest of health care professionals (P < .05). Technicians showed lower work-related and total physical activity than nurses and nursing assistants (74.55% vs 90.37%, P = .002; and 83.64% vs 95.72%, P < .001, respectively). Additionally, nursing assistants showed higher work-related physical activity compared to nurses (97.18% vs 90.37%, P = .008).Most health care professionals showed an appropriate level of physical activity. Men performed more transport-related and health-enhancing physical activity than women. Younger professionals and those with higher education were more compliant with health-enhancing and muscle-strengthening physical activity guidelines. Physiotherapists were more physically active when compared to the rest of health care professionals.


Assuntos
Doenças Cardiovasculares/prevenção & controle , Exercício Físico/fisiologia , Pessoal de Saúde/estatística & dados numéricos , Fisioterapeutas/estatística & dados numéricos , Prevenção Primária/métodos , Adulto , Comportamento Cooperativo , Estudos Transversais , Terapia por Exercício/métodos , Feminino , Inquéritos Epidemiológicos , Humanos , Masculino , Pessoa de Meia-Idade , Força Muscular/fisiologia , Espanha/epidemiologia , Inquéritos e Questionários
15.
Clin Interv Aging ; 16: 1119-1129, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34168435

RESUMO

Introduction: Maintaining skeletal muscle function throughout life is a crucial component of successful aging. Disadvantaged socioeconomic position (SEP) is associated with adverse health outcomes, but has not been extensively studied for the muscle disease sarcopenia. We aimed to determine the prevalence of probable sarcopenia, a precursor to sarcopenia diagnosis, based on the European Working Group on Sarcopenia in Older People 2 (EWGSOP2) guidelines overall, and according to SEP. Methods: This cross-sectional study comprised 3342 community-dwelling older adults [mean age (SD) 68.9 ± 6.3 years] from Wave 1 of the Irish Longitudinal Study on Ageing. Probable sarcopenia was identified using gender-specific cut-off values for handgrip strength as recommended by EWGSOP2. SEP was defined by educational attainment. Multivariate regression analysis was employed to determine associations between probable sarcopenia and pre-defined risk factors. Results: Overall, 23.4% of the population had probable sarcopenia and was significantly higher in the subset with low compared with high SEP (28.9% vs 18.1%, p<0.001). Consistent with this, multivariate logistic regression analysis showed that disadvantaged SEP was a significant determinant of probable sarcopenia [OR, CI 1.48 (1.17, 1.87) p<0.001]. Other known risk factors, namely, increased age, low physical activity, comorbidity, and osteoarthritis were significantly associated with an increased likelihood of probable sarcopenia, while overweight/obesity appeared to be protective. Conclusion: Disadvantaged SEP was an independent determinant of probable sarcopenia in community-dwelling older adults. These findings highlight that SEP and health inequality should be considered in prevention and treatment policy for sarcopenia in the community.


Assuntos
Disparidades nos Níveis de Saúde , Vida Independente/estatística & dados numéricos , Força Muscular/fisiologia , Músculo Esquelético/fisiologia , Sarcopenia/epidemiologia , Idoso , Idoso de 80 Anos ou mais , Estudos Transversais , Força da Mão/fisiologia , Humanos , Estudos Longitudinais , Masculino , Obesidade/epidemiologia , Prevalência , Fatores de Risco , Sarcopenia/diagnóstico , Fatores Socioeconômicos
16.
Clin Interv Aging ; 16: 1161-1171, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34188459

RESUMO

Purpose: Information and communication technology (ICT)-based training devices for older adults' care related to dementia are being developed to enhance older adults' cognitive functions. Older adults who require bicycle training devices can improve muscle strength and balance of lower limbs by continuously contracting and relaxing lower-limb muscles and improving cognitive function to prevent dementia. This study was conducted to investigate the effects of an ICT-based multicomponent program on body composition and cognitive function in older adults. Patients and Methods: In a randomized controlled intervention test on 20 people over the age of 60 (exercise group: n = 10; control: n = 10), the multicomponent program was applied to the exercise group twice per week, once per day for 12 weeks, at 30 min per session, whereas the control group was advised to maintain their usual daily activities. Results: Comparing body composition changes and cognitive function changes before and after intervention exhibited statistically significant differences in skeletal muscle mass (P=0.01) and modified Alzheimer's disease assessment scale-cognitive score (P=0.01) between the two groups. Conclusion: It can be difficult to be engaged in a simple repetitive exercise program. Therefore, to meet older adults' interests and expectations, a customized ICT-based multicomponent program, which can improve body composition and cognitive function in older adults and is believed to help prevent dementia, is recommended. Trial Registration: UMIN000042129 (https://www.umin.ac.jp/english/).


Assuntos
Cognição/fisiologia , Demência/prevenção & controle , Informática Médica/métodos , Força Muscular/fisiologia , Terapia de Exposição à Realidade Virtual/métodos , Idoso , Idoso de 80 Anos ou mais , Exercício Físico/fisiologia , Terapia por Exercício/métodos , Feminino , Humanos , Masculino , Projetos de Pesquisa
17.
Muscle Nerve ; 64(2): 190-198, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-33974714

RESUMO

INTRODUCTION/AIMS: Clinical trials addressing treatments for Duchenne muscular dystrophy (DMD) require reliable and valid measurement of muscle contractile function across all disease severity levels. In this work we aimed to evaluate a protocol combining voluntary and evoked contractions to measure strength and excitability of wrist extensor muscles for safety, feasibility, reliability, and discriminant validity between males with DMD and controls. METHODS: Wrist extensor muscle strength and excitability were assessed in males with DMD (N = 10; mean ± standard deviation: 15.4 ± 5.9 years of age), using the Brooke Upper Extremity Rating Scale (scored 1-6), and age-matched healthy male controls (N = 15; 15.5 ± 5.0 years of age). Torque and electromyographic (EMG) measurements were analyzed under maximum voluntary and stimulated conditions at two visits. RESULTS: A protocol of multiple maximal voluntary contractions (MVCs) and evoked twitch contractions was feasible and safe, with 96% of the participants completing the protocol and having a less than 7% strength decrement on either measure for both DMD patients and controls (P ≥ .074). Reliability was excellent for voluntary and evoked measurements of torque and EMG (intraclass correlation coefficient [ICC] over 0.90 and over 0.85 within and between visits, respectively). Torque, EMG, and timing of twitch-onset measurements discriminated between DMD and controls (P < .001). Twitch contraction time did not differ significantly between groups (P = .10). DISCUSSION: Findings from this study show that the protocol is a safe, feasible, reliable, and a valid method to measure strength and excitability of wrist extensors in males with DMD.


Assuntos
Contração Muscular/fisiologia , Força Muscular/fisiologia , Músculo Esquelético/fisiopatologia , Distrofia Muscular de Duchenne/fisiopatologia , Adolescente , Adulto , Criança , Eletromiografia/métodos , Estudos de Viabilidade , Humanos , Contração Isométrica/fisiologia , Masculino , Adulto Jovem
18.
Knee ; 30: 176-184, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33940305

RESUMO

BACKGROUND: Hop performance and isokinetic knee extensor strength (IKES) asymmetry are associated with re-injury after anterior cruciate ligament reconstruction (ACLR). This study investigated deficits after ACLR, and which hop tests are most correlated with IKES and patient-reported outcome measures (PROMs). METHODS: 50 patients were assessed 9-12 months after ACLR using the International Knee Documentation Committee (IKDC) and ACL Return to Sport after Injury (ACL-RSI) scores. Peak IKES and eight hop tests were assessed: single (SHD), triple (THD) and triple crossover (TCHD) hop for distance, 6 m timed hop (6MTH), single medial (MHD) and single lateral (LHD) hop for distance, single countermovement jump (SLCMJ) and timed speedy hop (SHT). The percentage of patients with limb symmetry indices (LSIs) < 90% was reported. Pearson's correlations investigated the correlation between PROMs, IKES and hop LSIs. RESULTS: The majority (80%) of patients had IKES LSIs < 90%. While 12-14% of patients demonstrated LSIs < 90% for the SHD, 6MTH, THD and TCHD, 52-80% demonstrated LSIs < 90% for the other hop tests. The IKES LSI was significantly different (p < 0.05) from all hop LSIs, besides the SLCMJ (p = 0.638). Large correlations were only observed between the IKES LSI and the SLCMJ (r = 0.82), MHD (r = 0.71) and LHD (r = 0.53). The SLCMJ, MHD and IKES LSIs demonstrated the largest significant correlations with the IKDC (r = 0.51-0.53) and ACL-RSI (r = 0.38-0.40). CONCLUSIONS: Hop tests such as the MHD and SLCMJ may present a more practical alternative to quantifying peak IKES, especially in the absence of more sophisticated testing equipment. While not surrogates as such, these selective hop measures may better inform the clinician as to whether significant underlying quadriceps deficits are still present throughout the post-operative rehabilitation period.


Assuntos
Lesões do Ligamento Cruzado Anterior/cirurgia , Reconstrução do Ligamento Cruzado Anterior/reabilitação , Joelho/fisiologia , Força Muscular/fisiologia , Músculo Quadríceps/fisiologia , Adolescente , Adulto , Lesões do Ligamento Cruzado Anterior/fisiopatologia , Reconstrução do Ligamento Cruzado Anterior/efeitos adversos , Teste de Esforço , Feminino , Humanos , Joelho/cirurgia , Articulação do Joelho/fisiologia , Articulação do Joelho/cirurgia , Masculino , Pessoa de Meia-Idade , Medidas de Resultados Relatados pelo Paciente , Período Pós-Operatório , Volta ao Esporte , Adulto Jovem
19.
Thorax ; 76(7): 664-671, 2021 07.
Artigo em Inglês | MEDLINE | ID: mdl-33931570

RESUMO

PURPOSE: Functional electrical stimulation-assisted cycle ergometry (FESCE) enables in-bed leg exercise independently of patients' volition. We hypothesised that early use of FESCE-based progressive mobility programme improves physical function in survivors of critical care after 6 months. METHODS: We enrolled mechanically ventilated adults estimated to need >7 days of intensive care unit (ICU) stay into an assessor-blinded single centre randomised controlled trial to receive either FESCE-based protocolised or standard rehabilitation that continued up to day 28 or ICU discharge. RESULTS: We randomised in 1:1 ratio 150 patients (age 61±15 years, Acute Physiology and Chronic Health Evaluation II 21±7) at a median of 21 (IQR 19-43) hours after admission to ICU. Mean rehabilitation duration of rehabilitation delivered to intervention versus control group was 82 (IQR 66-97) versus 53 (IQR 50-57) min per treatment day, p<0.001. At 6 months 42 (56%) and 46 (61%) patients in interventional and control groups, respectively, were alive and available to follow-up (81.5% of prespecified sample size). Their Physical Component Summary of SF-36 (primary outcome) was not different at 6 months (50 (IQR 21-69) vs 49 (IQR 26-77); p=0.26). At ICU discharge, there were no differences in the ICU length of stay, functional performance, rectus femoris cross-sectional diameter or muscle power despite the daily nitrogen balance was being 0.6 (95% CI 0.2 to 1.0; p=0.004) gN/m2 less negative in the intervention group. CONCLUSION: Early delivery of FESCE-based protocolised rehabilitation to ICU patients does not improve physical functioning at 6 months in survivors. TRIAL REGISTRATION NUMBER: NCT02864745.


Assuntos
Estado Terminal/reabilitação , Ergometria/métodos , Terapia por Exercício/métodos , Unidades de Terapia Intensiva , Força Muscular/fisiologia , Debilidade Muscular/reabilitação , Qualidade de Vida , Respiração Artificial/métodos , Estimulação Elétrica , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Debilidade Muscular/fisiopatologia , Estudos Prospectivos , Fatores de Tempo
20.
Int J Sport Nutr Exerc Metab ; 31(4): 321-328, 2021 May 19.
Artigo em Inglês | MEDLINE | ID: mdl-34010807

RESUMO

The long-standing caffeine habituation paradigm was never investigated in strength endurance and jumping exercise performance through a straightforward methodology. The authors examined if habitual caffeine consumption would influence the caffeine ergogenic effects on strength endurance and jumping performance as well as perceptual responses. Thirty-six strength-trained individuals were mathematically allocated into tertiles according to their habitual caffeine consumption: low (20 ± 11 mg/day), moderate (88 ± 33 mg/day), and high consumers (281 ± 167 mg/day). Then, in a double-blind, crossover, counterbalanced fashion, they performed a countermovement vertical jump test and a strength endurance test either after caffeine (6 mg/kg) and placebo supplementation or after no supplementation (control). Perceptual responses such as ratings of perceived exertion and pain were measured at the termination of the exercises. Acute caffeine supplementation improved countermovement vertical jump performance (p = .001) and total repetitions (p = .004), regardless of caffeine habituation. Accordingly, analysis of absolute change from the control session showed that caffeine promoted a significantly greater improvement in both countermovement vertical jump performance (p = .004) and total repetitions (p = .0001) compared with placebo. Caffeine did not affect the rating of perceived exertion and pain in any exercise tests, irrespective of tertiles (for all comparisons, p > .05 for both measures). Caffeine side effects were similar in low, moderate, and high caffeine consumers. These results show that habitual caffeine consumption does not influence the potential of caffeine as an ergogenic aid in strength endurance and jumping exercise performance, thus challenging recommendations to withdraw from the habitual caffeine consumption before supplementing with caffeine.


Assuntos
Desempenho Atlético/fisiologia , Cafeína/administração & dosagem , Suplementos Nutricionais , Substâncias para Melhoria do Desempenho/farmacologia , Resistência Física/efeitos dos fármacos , Treinamento de Força , Adulto , Cafeína/farmacologia , Estimulantes do Sistema Nervoso Central/administração & dosagem , Estimulantes do Sistema Nervoso Central/farmacologia , Estudos Cross-Over , Método Duplo-Cego , Humanos , Masculino , Força Muscular/efeitos dos fármacos , Força Muscular/fisiologia , Músculo Esquelético/efeitos dos fármacos , Músculo Esquelético/fisiologia , Medição da Dor/métodos , Placebos/administração & dosagem , Placebos/farmacologia , Antagonistas de Receptores Purinérgicos P1/administração & dosagem , Antagonistas de Receptores Purinérgicos P1/farmacologia , Fenômenos Fisiológicos da Nutrição Esportiva , Adulto Jovem
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...