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515 records – page 1 of 52.

A 3-year physical activity intervention program increases the gain in bone mineral and bone width in prepubertal girls but not boys: the prospective copenhagen school child interventions study (CoSCIS).

https://arctichealth.org/en/permalink/ahliterature91757
Source
Calcif Tissue Int. 2008 Oct;83(4):243-50
Publication Type
Article
Date
Oct-2008
Author
Hasselstrøm H A
Karlsson M K
Hansen S E
Grønfeldt V.
Froberg K.
Andersen L B
Author Affiliation
Institute for Exercise and Sport Sciences, University of Copenhagen, Copenhagen, Denmark. henrietteh62@hotmail.com
Source
Calcif Tissue Int. 2008 Oct;83(4):243-50
Date
Oct-2008
Language
English
Publication Type
Article
Keywords
Anthropometry
Bone Density - physiology
Bone Development - physiology
Bone and Bones - chemistry - physiology
Child
Denmark
Exercise
Female
Humans
Longitudinal Studies
Male
Motor Activity - physiology
Prospective Studies
Puberty - physiology
Sex Factors
Abstract
The aim of this study was to evaluate the effect of increasing the amount of time spent in physical education classes on bone mineral accrual and gain in bone size in prepubertal Danish children. A total of 135 boys and 108 girls, aged 6-8 years, were included in a school-based curriculum intervention program where the usual time spent in physical education classes was doubled to four classes (180 min) per week. The control group comprised age-matched children (62 boys and 76 girls) recruited from a separate community who completed the usual Danish school curriculum of physical activity (90 min/week). Dual-energy X-ray absorptiometry was used to evaluate bone mineral content (BMC; g), bone mineral density (g/cm(2)), and bone width at the calcaneus and distal forearm before and after 3 years of intervention. Anthropometrics and Tanner stages were evaluated on the same occasions. General physical activity was measured with an accelerometer worn for 4 days. In girls, the intervention group had a 12.5% increase (P = 0.04) in distal forearm BMC and a 13.2% increase (P = 0.005) in distal forearm scanned area compared with girls in the control group. No differences were found between the intervention and control groups in boys. Increasing the frequency of physical education classes for prepubertal children is associated with a higher accrual of bone mineral and higher gain in bone size after 3 years in girls but not in boys.
PubMed ID
18839047 View in PubMed
Less detail

A 6-year exercise program improves skeletal traits without affecting fracture risk: a prospective controlled study in 2621 children.

https://arctichealth.org/en/permalink/ahliterature259943
Source
J Bone Miner Res. 2014 Jun;29(6):1325-36
Publication Type
Article
Date
Jun-2014
Author
Fredrik Detter
Björn E Rosengren
Magnus Dencker
Mattias Lorentzon
Jan-Åke Nilsson
Magnus K Karlsson
Source
J Bone Miner Res. 2014 Jun;29(6):1325-36
Date
Jun-2014
Language
English
Publication Type
Article
Keywords
Absorptiometry, Photon
Accelerometry
Bone Density
Bone and Bones - pathology - physiopathology - radiography
Case-Control Studies
Child
Exercise - physiology
Female
Follow-Up Studies
Fractures, Bone - epidemiology - physiopathology - radiography
Humans
Kaplan-Meier Estimate
Male
Motor Activity
Prospective Studies
Risk factors
Sweden - epidemiology
Abstract
Most pediatric exercise intervention studies that evaluate the effect on skeletal traits include volunteers and follow bone mass for less than 3 years. We present a population-based 6-year controlled exercise intervention study in children with bone structure and incident fractures as endpoints. Fractures were registered in 417 girls and 500 boys in the intervention group (3969 person-years) and 835 girls and 869 boys in the control group (8245 person-years), all aged 6 to 9 years at study start, during the 6-year study period. Children in the intervention group had 40 minutes daily school physical education (PE) and the control group 60 minutes per week. In a subcohort with 78 girls and 111 boys in the intervention group and 52 girls and 54 boys in the control group, bone mineral density (BMD; g/cm(2) ) and bone area (mm(2) ) were measured repeatedly by dual-energy X-ray absorptiometry (DXA). Peripheral quantitative computed tomography (pQCT) measured bone mass and bone structure at follow-up. There were 21.7 low and moderate energy-related fractures per 1000 person-years in the intervention group and 19.3 fractures in the control group, leading to a rate ratio (RR) of 1.12 (0.85, 1.46). Girls in the intervention group, compared with girls in the control group, had 0.009?g/cm(2) (0.003, 0.015) larger gain annually in spine BMD, 0.07?g (0.014, 0.123) larger gain in femoral neck bone mineral content (BMC), and 4.1?mm(2) (0.5, 7.8) larger gain in femoral neck area, and at follow-up 24.1?g (7.6, 40.6) higher tibial cortical BMC (g) and 23.9?mm(2) (5.27, 42.6) larger tibial cross-sectional area. Boys with daily PE had 0.006?g/cm(2) (0.002, 0.010) larger gain annually in spine BMD than control boys but at follow-up no higher pQCT values than boys in the control group. Daily PE for 6 years in at study start 6- to 9-year-olds improves bone mass and bone size in girls and bone mass in boys, without affecting the fracture risk.
Notes
Comment In: J Bone Miner Res. 2014 Jun;29(6):1322-424764102
PubMed ID
24390777 View in PubMed
Less detail

13C evidence for dietary habits of prehistoric man in Denmark.

https://arctichealth.org/en/permalink/ahliterature62404
Source
Nature. 1981 Jul 23;292(5821):332-3
Publication Type
Article
Date
Jul-23-1981
Author
H. Tauber
Source
Nature. 1981 Jul 23;292(5821):332-3
Date
Jul-23-1981
Language
English
Publication Type
Article
Keywords
Bone and Bones - analysis
Carbon Isotopes
Collagen - analysis
Denmark
Diet
History, Ancient
History, Medieval
PubMed ID
7019718 View in PubMed
Less detail

The 90 Sr content of human bone and 137 Cs content of human muscle in Finland 1963-1965.

https://arctichealth.org/en/permalink/ahliterature102616
Source
Acta Radiol Diagn (Stockh). 1966:Suppl 254:64-5.
Publication Type
Article
Date
1966

The 90 Sr content of human bone and 137 Cs content of human muscle in Finland 1963-1965.

https://arctichealth.org/en/permalink/ahliterature112088
Source
Acta Radiol Diagn (Stockh). 1966;:Suppl 254:64-5
Publication Type
Article
Date
1966

[90Sr in residents of the Iset riverside settlements].

https://arctichealth.org/en/permalink/ahliterature144798
Source
Radiats Biol Radioecol. 2010 Jan-Feb;50(1):90-7
Publication Type
Article
Author
E I Tolstykh
L M Peremyslova
N B Shagina
M O Degteva
Source
Radiats Biol Radioecol. 2010 Jan-Feb;50(1):90-7
Language
Russian
Publication Type
Article
Keywords
Bone and Bones - chemistry
Humans
Radiation monitoring
Radioactive Hazard Release
Retrospective Studies
Rivers - chemistry
Rural Population
Siberia
Strontium Radioisotopes - analysis
Water Pollutants, Radioactive - analysis
Abstract
The river Iset belongs to the Techa-Iset-Tobol-Irtysh-Ob system contaminated by liquid radioactive wastes from Mayak plutonium facility in 1949-1956. This study represents the first retrospective analysis of postmortem measurements of 90Sr in bones from residents of the Iset riverside settlements in 1960-1982. It was shown that 90Sr concentration in bones of residents lived in settlements located downstream from the Techa river mouth (Shadrinsk, Isetskoye, Yalutorovsk) was 5 times higher than average 90Sr concentration in bones of the Russian residents. There was not statistically significant difference in accumulated 90Sr in bones between residents of the considered Iset' settlements indicating similar levels of 90Sr ingestion. Dietary 90Sr intake was reconstructed from the measurements of the radionuclide in bones. Total 90Sr dietary intake in 1950-1975 was 68 kBq; and 90% of the intake occurred in 1950-1961. In 1960s, 90Sr-contamination of the diet in settlements located downstream from the Techa river mouth was mostly (by 70%) due to global fallouts. Absorbed dose in the red bone marrow cumulated over 25 years of exposure was equal to 14 (4.7-42) mGy.
PubMed ID
20297686 View in PubMed
Less detail

[90 Strontium in milk-teeth, diet and bones. A comparative study of levels in Denmark, Faeroe Islands and Greenland]

https://arctichealth.org/en/permalink/ahliterature44580
Source
Nord Med. 1968 Feb 29;79(9):280-2
Publication Type
Article
Date
Feb-29-1968

210Pb and 210Po in tissues of some Alaskan residents as related to consumption of caribou or reindeer meat.

https://arctichealth.org/en/permalink/ahliterature5061
Source
Health Physics. 1970 Feb;18(2):127-134
Publication Type
Article
Date
Feb-1970

515 records – page 1 of 52.