Search results for " EXERCISE"
showing 10 items of 1621 documents
Regional glucose uptake and protein synthesis in isolated perfused rat hearts immediately after training and later
1987
The effect of 10 weeks of running training and termination of training on the regional distribution of cardiac glucose uptake and protein synthesis were studied in isolated perfused hearts in male rats. The left ventricular glucose uptake in hearts from sedentary rats was 1.87 +/- 0.14 mumol/min per g protein (mean +/- SE), being about 30% higher in the subendocardial than in the subepicardial layer (p less than 0.05). The gradient of left ventricular glucose uptake was similar to the controls in the rats retired from training, but was absent in the trained animals. The altered transmural glucose uptake probably reflects differences in the adaptive response of various myocardial muscle laye…
Blood lactate production and recovery from anaerobic exercise in trained and untrained boys.
1988
Blood lactate production and recovery from anaerobic exercise were investigated in 19 trained (AG) and 6 untrained (CG) prepubescent boys. The exercises comprised 3 maximal test performances; 2 bicycle ergometer tests of different durations (15 s and 60 s), and running on a treadmill for 23.20±2.61 min to measure maximal oxygen uptake. Blood samples were taken from the fingertip to determine lactate concentrations and from the antecubital vein to determine serum testosterone. Muscle biopsies were obtained from vastus lateralis. Recovery was passive (seated) following the 60 s test but that following the treadmill run was initially active (10 min), and then passive. Peak blood lactate was hi…
Collagen metabolism of mouse skeletal muscle during the repair of exercise injuries.
1986
The activities of prolyl 4-hydroxylase and beta-glucuronidase, the concentration of hydroxyproline as well as reticulin and collagen type III, IV and V stainings were followed in skeletal muscle during a 20-day period after a 9-h treadmill running in untrained and trained male mice, aged 4-6 months. The prolonged 9-h running of untrained mice temporarily increased prolyl 4-hydroxylase activity 2, 5 and 10 days after exercise, more prominently in the red than in the white part of quadriceps femoris-muscle, and in analogical manner as beta-glucuronidase activity in tibialis anterior-muscle. Twenty days after exercise these enzymatic activities were back to the control level. The hydroxyprolin…
Postexercise myostatin and activin IIb mRNA levels: effects of strength training.
2007
ABSTRACTHULMI, J. J., J. P. AHTIAINEN, T. KAASALAINEN, E. PO¨LLA¨NEN, K. HA¨KKINEN, M. ALEN, H. SELA¨NNE, V. KOVANEN,and A. A. MERO. Postexercise Myostatin and Activin IIb mRNA Levels: Effects of Strength Training. Med. Sci. Sports Exerc., Vol.39, No. 2, pp. 289–297, 2007. Purpose: Muscle hypertrophy is likely to result from the cumulative effects of repeated bouts ofresistance exercise (RE) on postexercise molecular responses. Therefore, we determined muscle growth- and regeneration-relatedmRNA expression in response to a single RE bout both before and after a strength-training (ST) period. By means of this novellongitudinal setting, we examined whether postexercise gene expression at the …
Effects of inspiratory muscle training in patients with heart failure with preserved ejection fraction
2013
Heart failure with preserved ejection fraction (HFpEF) is remarkably common in elderly people with highly prevalent comorbid conditions. Despite its increasing in prevalence, there is no evidence-based effective therapy for HFpEF. We sought to evaluate whether inspiratory muscle training (IMT) improves exercise capacity, as well as left ventricular diastolic function, biomarker profile and quality of life (QoL) in patients with advanced HFpEF and nonreduced maximal inspiratory pressure (MIP).A total of 26 patients with HFpEF (median (interquartile range) age, peak exercise oxygen uptake (peak VO2) and left ventricular ejection fraction of 73 years (66-76), 10 ml/min/kg (7.6-10.5) and 72% (6…
Validity and reliability of isometric, isokinetic and isoinertial modalities for the assessment of quadriceps muscle strength in patients with total …
2013
Reliability of isometric, isokinetic and isoinertial modalities for quadriceps strength evaluation, and the relation between quadriceps strength and physical function was investigated in 29 total knee arthroplasty (TKA) patients, with an average age of 63 years. Isometric maximal voluntary contraction torque, isokinetic peak torque, and isoinertial one-repetition maximum load of the involved and uninvolved quadriceps were evaluated as well as objective (walking parameters) and subjective physical function (WOMAC). Reliability was good and comparable for the isometric, isokinetic, and isoinertial strength outcomes on both sides (intraclass correlation coefficient range: 0.947-0.966; standard…
Efficacy of a 12-month, monitored home exercise programme compared with normal care commencing 2 months after total knee arthroplasty: A randomized c…
2013
Objective: To evaluate the efficacy of a delayed home exercise programme compared with normal care after primary total knee arthroplasty. Design: Single-blind, prospective, randomized, controlled trial. Participants: A total of 108 participants (61% females, mean age 69 years [standard deviation 8.7]), were randomized to a home-based exercise group (EG, n=53) or to a control group (CG, n=55). Methods: Two months post-operatively, the EG received a home exercise programme, while the CG received no additional guidance. The outcome measurements were: pain and disability, measured using the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC); healthrelated quality of life (HR…
Effects of a Nine-Month Physical Activity Intervention on Morphological Characteristics and Motor and Cognitive Skills of Preschool Children
2020
(1) Background: Regular physical activity (PA) plays an important role during early childhood physical and psychological development. This study investigates the effects of a 9-month PA intervention on physiological characteristics and motor and cognitive skills in preschool children. (2) Methods: Preschool children (n = 132
Metabolic and anti-inflammatory effects of a home-based programme of aerobic physical exercise
2013
Summary Aims Regular exercise demonstrated the ability to provide enormous benefits to many diseases, atherosclerotic-based, degenerative and neoplastic, but also to grant anti-inflammatory actions, assessed by various authors in different populations. Despite of these clear benefits, many patients are unable to attain long-term results through chronic physical activity for different causes. On this basis, the aim of our study was to assess the metabolic and anti-inflammatory effects of a home-based programme of fast walking in patients affected by metabolic syndrome (MS). Materials and methods We enrolled 176 subjects with MS as stated by ATP III criteria. Patients were invited to walk for…
Assessment of quadriceps muscle weakness in patients after total knee arthroplasty and total hip arthroplasty: methodological issues.
2013
The aim of this exploratory study was to verify whether the evaluation of quadriceps muscle weakness is influenced by the testing modality (isometric vs. isokinetic vs. isoinertial) and by the calculation method (within-subject vs. between-subject comparisons) in patients 4-8months after total knee arthroplasty (TKA, n=29) and total hip arthroplasty (THA, n=30), and in healthy controls (n=19). Maximal quadriceps strength was evaluated as (1) the maximal voluntary contraction (MVC) torque during an isometric contraction, (2) the peak torque during an isokinetic contraction, and (3) the one repetition maximum (1-RM) load during an isoinertial contraction. Muscle weakness was calculated as the…