Athletic Remodeling in Female College Athletes: The “Morganroth Hypothesis” Revisited

Background: There is limited data regarding ventricular remodeling in college female athletes, especially when appropriate scaling of cardiac dimensions to lean body mass (LBM) is considered. Moreover, it is not well established whether cardiac remodeling in female athletes is a balanced process with proportional increase in left ventricular (LV) mass and volume or the right and LV size. Methods: During the preparticipation competitive screening, 72 female college athletes volunteered to undergo dual energy x-ray absorptiometry scan for quantification of LBM and comprehensive 2D echocardiography including assessment of longitudinal myocardial strain. The athletes were divided in 2 groups according to the intensity of the dynamic and static components of their sport categories, ie, a higher intensity dynamic and resistive group (n = 37 participating in rowing, water polo and lacrosse) and a lower intensity group (n = 35, participating in short distance running, sailing, synchronized swimming, and softball). In addition, we recruited a group of 31 age-matched nonathlete controls. Results: The mean age of the study population was 18.7 ± 1.0 years. When scaled to body surface area, the higher intensity group had 17.1 ± 3.6% (P
Source: Clinical Journal of Sport Medicine - Category: Sports Medicine Tags: Original Research Source Type: research

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Abstract We investigated the effects of ibandronate, a bisphosphonate; eldecalcitol, an active vitamin D3 analogue; and combination treatment with both agents on secondary osteoporosis and arthritis using rats with adjuvant-induced arthritis. Arthritis was induced in 8-week-old male Lewis rats. Rats were randomized into four treatment groups and an untreated normal control group: ibandronate, eldecalcitol, ibandronate + eldecalcitol, vehicle, and control. Paw thickness was measured to evaluate arthritis. Joint destruction was evaluated histomorphometrically by the ankle joint stained with Fast Green and safranin O...
Source: Biomed Res - Category: Research Authors: Tags: Biomed Res Source Type: research
ConclusionA significant reduction in bone density was observed in patients with chronic hepatitis B receiving Tenofovir for more than 12 months in comparison with the control group. Also, the patients who had been taking Tenofovir in longer time, osteoporosis and osteopenia were more reported.
Source: Clinical Epidemiology and Global Health - Category: Epidemiology Source Type: research
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Source: Journal of Bone and Mineral Research - Category: Orthopaedics Authors: Tags: Clinical Trial Source Type: research
Conclusions: This investigation suggests a negative association between bone mineral status and oral health condition regarding DMFT and number of missing teeth. It could be concluded that inadequate bone mass could coexist with higher number of missing teeth or a worse oral health condition; nevertheless, further studies are required to assess these relationships precisely.Keywords: Absorptiometry, bone density: Oral health, dental caries, dual ‑energy X‑ray absorptiometry scan, osteoporosis, periodontal diseases
Source: International Journal of Preventive Medicine - Category: International Medicine & Public Health Source Type: research
Duchenne muscular dystrophy (DMD) results in progressive loss of functional capacities, which is a reflection of loss of muscle mass with contractile tissue being replaced by fat tissue. Currently, measurements of lean body mass (LBM) in DMD include dual energy x-ray absorptiometry (DEXA) and magnetic resonance imaging (MRI). Studies have shown that a decrease in LBM correlates with decreased quantitative strength measurements. However, DXA and MRI require cooperation from the subject and scanning can be uncomfortable for subjects in a more advanced stage of the disease with severe contractures or spine deformities.
Source: Neuromuscular Disorders - Category: Neurology Authors: Source Type: research
Patients with Duchenne muscular dystrophy (DMD) have progressive loss of motor function through their first and second decades of life. In contrast, similar-aged patients with Becker muscular dystrophy (BMD) have normal motor function. We aimed to study the age-related lean muscle mass changes in patients with DMD, BMD and healthy controls. We conducted a retrospective study of dual energy X-ray absorptiometry (DXA) lean body mass (LBM) and appendicular lean mass (ALM) and their height-adjusted indices (LBMI and ALMI) of 531 patients with DMD, 46 patients with BMD and normal motor function, and 693 healthy male controls (n...
Source: Neuromuscular Disorders - Category: Neurology Authors: Source Type: research
Authors: Patwardhan V, Khadilkar A, Chiplonkar S, Khadilkar V Abstract Background: Although less common, insulin resistance and deranged lipids are also observed in normal weight individuals. Few studies have assessed body composition and lipid profiles in normal weight insulin resistant individuals. Objective: To assess differences in body composition and lipid profile in normal weight and overweight 40-60 years apparently healthy men with special reference to insulin resistance. Design: Cross-sectional observational study in apparently healthy men (40-60 yrs) was performed. Anthropometry, body composition...
Source: Journal of the Association of Physicians of India - Category: General Medicine Tags: J Assoc Physicians India Source Type: research
Conclusion: Childhood illnesses were more common in MIH-affected children compared to controls. Bone maturation parameters (BMD, BMC) do not differ between MIH affected and control children.
Source: Journal of Indian Society of Pedodontics and Preventive Dentistry - Category: Dentistry Authors: Source Type: research
Abstract Bone, vascular smooth muscle, and arachnoid trabeculae are composed of the same type of collagen. However, no studies have investigated the relationship between bone mineral density deterioration and cerebral atrophy, both of which occur in normal, healthy aging. Accordingly, we evaluated whether bone mineral density was associated with brain parenchymal atrophy and ventricular enlargement in healthy individuals. Intracranial cavity, brain parenchyma, and lateral ventricles volumes were measured using brain magnetic resonance imaging (MRI) with a semiautomated tool. We included 267 individuals with no his...
Source: Aging - Category: Biomedical Science Authors: Tags: Aging (Albany NY) Source Type: research
Conclusion: A significant proportion of this large cohort of south Indian healthy rural postmenopausal women had osteoporosis at either site with advancing age. Most of them had a suboptimal DCI, and over half of them had VDD.
Source: Indian Journal of Community Medicine - Category: International Medicine & Public Health Authors: Source Type: research
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