High bone turnover in Irish professional jockeys.

Hdl Handle:
http://hdl.handle.net/10147/207914
Title:
High bone turnover in Irish professional jockeys.
Authors:
Waldron-Lynch, F; Murray, B F; Brady, J J; McKenna, M J; McGoldrick, A; Warrington, G; O'Loughlin, G; Barragry, J M
Affiliation:
Adelaide and Meath Hospital, Dublin, Ireland. frank.waldron-lynch@yale.edu
Citation:
Osteoporos Int. 2010 Mar;21(3):521-5. Epub 2009 Mar 7.
Journal:
Osteoporosis international : a journal established as result of cooperation, between the European Foundation for Osteoporosis and the National Osteoporosis, Foundation of the USA
Issue Date:
1-Feb-2012
URI:
http://hdl.handle.net/10147/207914
DOI:
10.1007/s00198-009-0887-0
PubMed ID:
19271097
Abstract:
SUMMARY: Professional jockeys are routinely exposed to high impact trauma and sustain fractures frequently. We found that jockeys restrict their caloric intake in order to maintain regulation weights, and that bone turnover is high. There are significant health and safety implications for the racing industry. INTRODUCTION: Professional jockeys routinely sustain fractures from high impact falls. Jockeys maintain a low percentage body fat and a low body mass index (BMI) to achieve low weight targets in order to race. We evaluated dietary habits and bone metabolism in jockeys. METHODS: Bone mineral density (BMD) was measured in 27 male jockeys of the 144 jockeys licensed in Ireland. Fourteen (52%) had BMD T score below -1.0, of whom 12 consented to clinical review, nutritional survey, endocrine studies, and bone turnover markers (BTM). BTM were compared to age- and sex-matched controls (n = 16). RESULTS: BMI was 20.6 +/- 1.7 kg/m(2); previous fracture frequency was 3.2 +/- 2.0 per rider. All had normal endocrine axes. The jockeys' diet as determined by a 7-day dietary recall was deficient in energy, calcium, and vitamin D intake. Compared with the control group, the jockey group had evidence of increased bone turnover. CONCLUSIONS: A substantial proportion of the professional jockeys in Ireland have low-normal BMD, low BMI, and high bone turnover that may result from weight and dietary restrictions. These factors seem to have a deleterious effect on their bone health and predispose the jockeys to a high fracture risk that should be remediated.
Language:
eng
MeSH:
Adult; Body Mass Index; Bone Density/physiology; Bone Diseases, Metabolic/*etiology/physiopathology; Bone and Bones/*metabolism; Case-Control Studies; Diet/adverse effects; Food Habits; Humans; Male; Occupational Diseases/*etiology/physiopathology; Sports/*physiology; Young Adult
ISSN:
1433-2965 (Electronic); 0937-941X (Linking)

Full metadata record

DC FieldValue Language
dc.contributor.authorWaldron-Lynch, Fen_GB
dc.contributor.authorMurray, B Fen_GB
dc.contributor.authorBrady, J Jen_GB
dc.contributor.authorMcKenna, M Jen_GB
dc.contributor.authorMcGoldrick, Aen_GB
dc.contributor.authorWarrington, Gen_GB
dc.contributor.authorO'Loughlin, Gen_GB
dc.contributor.authorBarragry, J Men_GB
dc.date.accessioned2012-02-01T10:49:57Z-
dc.date.available2012-02-01T10:49:57Z-
dc.date.issued2012-02-01T10:49:57Z-
dc.identifier.citationOsteoporos Int. 2010 Mar;21(3):521-5. Epub 2009 Mar 7.en_GB
dc.identifier.issn1433-2965 (Electronic)en_GB
dc.identifier.issn0937-941X (Linking)en_GB
dc.identifier.pmid19271097en_GB
dc.identifier.doi10.1007/s00198-009-0887-0en_GB
dc.identifier.urihttp://hdl.handle.net/10147/207914-
dc.description.abstractSUMMARY: Professional jockeys are routinely exposed to high impact trauma and sustain fractures frequently. We found that jockeys restrict their caloric intake in order to maintain regulation weights, and that bone turnover is high. There are significant health and safety implications for the racing industry. INTRODUCTION: Professional jockeys routinely sustain fractures from high impact falls. Jockeys maintain a low percentage body fat and a low body mass index (BMI) to achieve low weight targets in order to race. We evaluated dietary habits and bone metabolism in jockeys. METHODS: Bone mineral density (BMD) was measured in 27 male jockeys of the 144 jockeys licensed in Ireland. Fourteen (52%) had BMD T score below -1.0, of whom 12 consented to clinical review, nutritional survey, endocrine studies, and bone turnover markers (BTM). BTM were compared to age- and sex-matched controls (n = 16). RESULTS: BMI was 20.6 +/- 1.7 kg/m(2); previous fracture frequency was 3.2 +/- 2.0 per rider. All had normal endocrine axes. The jockeys' diet as determined by a 7-day dietary recall was deficient in energy, calcium, and vitamin D intake. Compared with the control group, the jockey group had evidence of increased bone turnover. CONCLUSIONS: A substantial proportion of the professional jockeys in Ireland have low-normal BMD, low BMI, and high bone turnover that may result from weight and dietary restrictions. These factors seem to have a deleterious effect on their bone health and predispose the jockeys to a high fracture risk that should be remediated.en_GB
dc.language.isoengen_GB
dc.subject.meshAdulten_GB
dc.subject.meshBody Mass Indexen_GB
dc.subject.meshBone Density/physiologyen_GB
dc.subject.meshBone Diseases, Metabolic/*etiology/physiopathologyen_GB
dc.subject.meshBone and Bones/*metabolismen_GB
dc.subject.meshCase-Control Studiesen_GB
dc.subject.meshDiet/adverse effectsen_GB
dc.subject.meshFood Habitsen_GB
dc.subject.meshHumansen_GB
dc.subject.meshMaleen_GB
dc.subject.meshOccupational Diseases/*etiology/physiopathologyen_GB
dc.subject.meshSports/*physiologyen_GB
dc.subject.meshYoung Adulten_GB
dc.titleHigh bone turnover in Irish professional jockeys.en_GB
dc.contributor.departmentAdelaide and Meath Hospital, Dublin, Ireland. frank.waldron-lynch@yale.eduen_GB
dc.identifier.journalOsteoporosis international : a journal established as result of cooperation, between the European Foundation for Osteoporosis and the National Osteoporosis, Foundation of the USAen_GB
dc.description.provinceLeinster-

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