Bone Geometry, Strength, and Muscle Size in Runners with a History of Stress Fracture

Abstract

These findings suggest that cortical bone strength, cortical area, and MCSA are all lower in runners with a history of stress fracture. However, the lower strength was appropriate for the smaller muscle size, suggesting that interventions to reduce stress fracture risk might be aimed at improving muscle size and strength.

Low 25(OH) vitamin D concentrations in international UK track and field athletes

“…However, if these findings were corroborated in a larger athlete group, vitamin D deficiency may be an additional aetiological risk factor for the increased incidence of stress fractures in female athletes. [49][50][51][52][53][54] Insufficient serum concentration of 25(OH)D is known to increase parathyroid hormone (PTH) secretion, increasing bone turnover and bone resorption. 55 In a prospective study, in Finnish army recruits, high serum PTH levels were identified as a risk factor for stress fracture development.…”

Development of equations and proposed reference values to estimate body fat mass among Chilean children and adolescents

“…3,4 B o d y c o m p o s i t i o n d u r i n g childhood and adolescence can be assessed by sophisticated techniques, 5,6 such as hydrostatic weighing, electric conductivity, bioelectrical impedance, isotope dilution, potassium-40 content, and dual energy X-ray absorptiometry (DXA). 6,7 M o s t s t u d i e s c o n d u c t e d i n children and adolescents that identify the size of the problem and healthrelated consequences resulting from overweight and obesity use international body mass index (BMI) references based on age and sex; 8 however, to our knowledge, in Chile there are no national references in place to estimate fat percentage (F%) and/or FM, specifically among children and adolescents.…”

Desarrollo de ecuaciones y propuesta de valores referenciales para estimar la masa grasa de niños y adolescentes chilenos

“…3,4 La evaluación de la composición c o r p o r a l e n l a i n f a n c i a y l a adolescencia se puede realizar por medio de técnicas sofisticadas, 5,6 como pesaje hidrostático, conductividad eléctrica, bioimpedancia eléctrica, dilución de isótopos, conteo de potasio 40 y la absorciometría dual de rayos X (dual energy X-ray absorptiometry; DXA, por sus siglas en inglés). 6,7 L a m a y o r í a d e l o s e s t u d i o s efectuados en niños y adolescentes que identifican la magnitud y las consecuencias de la salud relacionadas con el sobrepeso y la obesidad usan referencias internacionales de índice d e m a s a c o r p o r a l ( I M C ) s e g ú n edad y género; 8 Este estudio hipotetiza que las variables antropométricas, así como la edad cronológica y biológica, podrían predecir la MG de niños y adolescentes.…”