Zobrazeno 1 - 10
of 19
pro vyhledávání: '"K J. MacKelvie"'
Publikováno v:
British Journal of Sports Medicine. 39:10-14
Background: Mechanical loading during childhood plays a critical role in normal growth and development of the skeleton. Ground reaction forces (GRFs) may provide a surrogate measure for the strain experienced by bone on landing and at take off. Howev
Autor:
K. J. MacKelvie, Harri Sievänen, Ken P. Whittall, Moira A. Petit, Heather A. McKay, Bruce B. Forster, Ken M. Forkheim, Heather M. Macdonald
Publikováno v:
Journal of Clinical Densitometry. 7:161-168
Conventional density measures by dual-energy X-ray absorptiometry (DXA) are confounded by increases in bone size and do not assess bone geometry. We assessed precision of magnetic resonance imaging (MRI) and used MRI, DXA, and hip structure analysis
Publikováno v:
British Journal of Sports Medicine. 36:250-257
This systematic review examines and compares the bone mineral changes in children and adolescents, as measured by dual energyxray absorptiometry, reported in exercise intervention studies. The effects of hormonal factors and growth on bone mineral ch
Autor:
Dariush Elahi, Jean-Pierre Chanoine, K. J. MacKelvie, Alfred C. K. Wong, Susan I. Barr, Graydon S. Meneilly
Publikováno v:
Obesity (Silver Spring, Md.). 16(1)
Objective: Increased physical activity is an integral part of weight loss programs in adolescents. We prospectively investigated the effects of exercise on glucagon-like peptide-1 (GLP-1) concentrations and on appetite markers. Methods and Procedures
Autor:
Dariush Elahi, K. J. MacKelvie, Susan I. Barr, Jean-Pierre Chanoine, Graydon S. Meneilly, Alfred C. K. Wong
Publikováno v:
The Journal of clinical endocrinology and metabolism. 92(2)
Increased physical activity is an integral part of weight loss programs in adolescents. We hypothesized that exercise could affect appetite-regulating hormones and the subjective desire to eat, which could partly explain the poor success rate of the
Publikováno v:
Pediatrics. 112(6 Pt 1)
Objective. Childhood weight-bearing physical activity is recognized as an important determi- nant of peak bone mass, and physical activity interven- tion may represent a feasible strategy for primary pre- vention of osteoporosis. Previous school-base
Publikováno v:
Bone. 34(4)
Exercise during growth has a positive influence on bone mineral accrual, yet little is known about how bone geometry and strength adapt to loading during growth. Our primary objective was to compare changes in proximal femur bone geometry and strengt
Publikováno v:
Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research. 17(5)
We examined the effects of a 7-month jumping intervention (10 minutes, 3 times per week) on bone mineral gain in prepubertal Asian and white boys (10.3+/-0.6 years, 36.0+/-9.2 kg) at 14 schools randomized to control (n = 60) and intervention (n = 61)
Autor:
Moira A. Petit, Ari Heinonen, Heather A. McKay, Karim M. Khan, Thomas J. Beck, K. J. MacKelvie
Publikováno v:
Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research. 17(3)
We compared 7-month changes in bone structural properties in pre- and early-pubertal girls randomized to exercise intervention (10-minute, 3 times per week, jumping program) or control groups. Girls were classified as prepubertal (PRE; Tanner breast
Publikováno v:
Medicine and science in sports and exercise. 33(11)
We investigated ethnic differences in areal bone mineral density (aBMD; g x cm(-2)) and its determinants at two levels of maturity in Asian- and Caucasian-Canadian girls.Participants were 131 Asian (26 Tanner breast stage I (aTI) and 30 Tanner II (aT