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Titolo:
Weight-bearing exercise and markers of bone turnover in female athletes
Autore:
Creighton, DL; Morgan, AL; Boardley, D; Brolinson, PG;
Indirizzi:
Univ Toledo, Dept Kinesiol, Hlth Educ Ctr 227, Toledo, OH 43606 USA Univ Toledo Toledo OH USA 43606 , Hlth Educ Ctr 227, Toledo, OH 43606 USA Univ Toledo, Coll Hlth & Human Serv, Rehabil Serv, Toledo, OH 43606 USA Univ Toledo Toledo OH USA 43606 Serv, Rehabil Serv, Toledo, OH 43606 USA
Titolo Testata:
JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 2, volume: 90, anno: 2001,
pagine: 565 - 570
SICI:
8750-7587(200102)90:2<565:WEAMOB>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
MINERAL DENSITY; OSTEOPOROSIS; MASS; WOMEN; PREVENTION; PATTERNS; PLAYERS; CALCIUM; SPORTS; TRIAD;
Keywords:
osteocalcin; physical activity; mechanical loading;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Morgan, AL Univ Toledo, Dept Kinesiol, Hlth Educ Ctr 227, 2801 W Bancroft St, Toledo,OH 43606 USA Univ Toledo 2801 W Bancroft St Toledo OH USA 43606 OH 43606 USA
Citazione:
D.L. Creighton et al., "Weight-bearing exercise and markers of bone turnover in female athletes", J APP PHYSL, 90(2), 2001, pp. 565-570

Abstract

Weight-bearing activity provides an osteogenic stimulus, while effects of swimming on bone are unclear. We evaluated bone mineral density (BMD) and markers of bone turnover in female athletes (n = 41, age 20.7 yr) comparing three impact groups, high impact (High, basketball and volleyball, n = 14),medium impact (Med, soccer and track, n = 13), and nonimpact (Non, swimming, n = 7), with sedentary age-matched controls (Con, n = 7). BMD was assessed by dual-energy X-ray absorptiometry at the lumbar spine, femoral neck (FN), Ward's triangle, and trochanter (TR); bone resorption estimated from urinary cross-linked N-telopeptides (NTx); and bone formation determined fromserum osteocalcin. Adjusted BMD (g/cm; covariates: body mass index, weight, and calcium and calorie intake) was greater at the FN and TR in the High group (1.27 +/- 0.03 and 1.05 +/- 0.03) than in the Non(1.05 +/- 0.04 and 0.86 +/- 0.04) and Con (1.03 +/- 0.05 and 0.85 +/- 0.05) groups and greater at the TR in the Med group (1.01 +/- 0.03) than in the Non (0.86 +/- 0.04) and Con (0.85 +/- 0.05) groups. Total body BMD was higher in the High group(4.9 +/- 0.12) than in the Med (4.5 +/- 0.12), Non (4.2 +/- 0.14), and Con14.1 +/- 0.17) groups and greater in the Med group than in the Non and Congroups. Bone formation was lower in the Non group (19.8 +/- 2.6) than in the High (30.6 +/- 3.0) and Med (32.9 +/- 1.9, P less than or equal to 0.05)groups. No differences in a marker of bone resorption (NTx) were noted. This indicates that women who participate in impact sports such as volleyballand basketball had higher BMDs and bone formation values than female swimmers.

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Documento generato il 29/03/20 alle ore 17:56:14