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Excersise efficiency

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7 papers 100 to 500 followers
By David Bennett Pediatric Orthopaedic Surgeon in the United States
Robert H Brophy, Kenneth Lin, Matthew V Smith
A patient's activity level is increasingly recognized as an important factor that can influence orthopaedic outcomes. Validated, reliable activity measurement tools now exist for the shoulder, hip, knee, and ankle. These tools can be directly applied as outcome measures that determine whether interventions restored function. It is now evident that activity level is a powerful prognostic factor for outcomes in orthopaedic procedures such as anterior cruciate ligament reconstruction, articular cartilage repair, and total joint arthroplasty...
July 2014: Journal of the American Academy of Orthopaedic Surgeons
Bryan G Vopat, Stephen A Klinge, Philip K McClure, Paul D Fadale
Decades of research support the fact that much age-related deterioration is the result of the effects of sedentary lifestyles and the development of medical conditions rather than of aging itself. Elite older athletes, who demonstrate enhanced performance compared with historic cohorts and even some younger peers, are models of this paradigm. Many non-elite middle-aged adults and older adults continue to remain increasingly active throughout middle age and beyond. A continually growing body of basic science and clinical evidence demonstrates how active persons modulate physical decline through training...
September 2014: Journal of the American Academy of Orthopaedic Surgeons
D Eklund, T Pulverenti, S Bankers, J Avela, R Newton, M Schumann, K Häkkinen
The present study investigated neuromuscular adaptations between same-session combined strength and endurance training with 2 loading orders and different day combined training over 24 weeks. 56 subjects were divided into different day (DD) combined strength and endurance training (4-6 d·wk(-1)) and same-session combined training: endurance preceding strength (E+S) or vice versa (S+E) (2-3 d·wk(-1)). Dynamic and isometric strength, EMG, voluntary activation, muscle cross-sectional area and endurance performance were measured...
February 2015: International Journal of Sports Medicine
Marisa Coelho, Teresa Oliveira, Ruben Fernandes
Adipose tissue is no longer considered to be an inert tissue that stores fat. This tissue is capable of expanding to accommodate increased lipids through hypertrophy of existing adipocytes and by initiating differentiation of pre-adipocytes. Adipose tissue metabolism exerts an impact on whole-body metabolism. As an endocrine organ, adipose tissue is responsible for the synthesis and secretion of several hormones. These are active in a range of processes, such as control of nutritional intake (leptin, angiotensin), control of sensitivity to insulin and inflammatory process mediators (tumor necrosis factor α (TNF-α), interleukin-6 (IL-6), resistin, visfatin, adiponectin, among others) and pathways (plasminogen activator inhibitor 1 (PAI-1) and acylation stimulating protein (ASP) for example)...
April 20, 2013: Archives of Medical Science: AMS
Jeppe Bo Lauersen, Ditte Marie Bertelsen, Lars Bo Andersen
BACKGROUND: Physical activity is important in both prevention and treatment of many common diseases, but sports injuries can pose serious problems. OBJECTIVE: To determine whether physical activity exercises can reduce sports injuries and perform stratified analyses of strength training, stretching, proprioception and combinations of these, and provide separate acute and overuse injury estimates. MATERIAL AND METHODS: PubMed, EMBASE, Web of Science and SPORTDiscus were searched and yielded 3462 results...
June 2014: British Journal of Sports Medicine
Gregory D Myer, Avery D Faigenbaum, Kim Barber Foss, Yingying Xu, Jane Khoury, Lawrence M Dolan, Teri M McCambridge, Timothy E Hewett
OBJECTIVE: The purpose of this study was to examine the association of knee injuries with subsequent changes in body mass index and body composition during maturation in young females. METHODS: A prospective longitudinal study design was employed to evaluate young females active in soccer or basketball (N=862). Participants who completed at least 1-year follow-up to provide consecutive annual measures of BMIZ and %fat were included in the study analysis to determine the effect of knee injuries on the trajectory of these obesity markers in youth...
October 2014: British Journal of Sports Medicine
Bradley C Nindl, Joseph R Pierce, Kevin R Rarick, Alexander P Tuckow, Joseph A Alemany, Marilyn A Sharp, Mark D Kellogg, John F Patton
INTRODUCTION: The pulsatile secretion pattern of growth hormone (GH) is an important parameter of GH action at peripheral tissues, and more information is needed on how exercise impacts GH secretion. This study hypothesized that both aerobic and resistance exercise would exhibit dose-response relationships with respect to exercise duration and 20-h postexercise GH secretion. METHODS: Eight healthy men randomly completed five separate conditions: 1) control (no exercise; CON), 2) a moderate-duration (1-h) aerobic exercise session (MA), 3) a long-duration (2-h) aerobic exercise session (LA), 4) a moderate-duration (1-h) resistance exercise session (MR), and 5) a long-duration (2-h) resistance exercise session (LR)...
October 2014: Medicine and Science in Sports and Exercise
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