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BODY WATER INDICES AS MARKERS OF AGING IN MALE MASTERS SWIMMERS
ERRATUM
TO "Body water indices as markers of aging in male masters
swimmers. Journal of Sports Science and Medicine (2005) 4, 406-414"
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Georgianna
Tuuri1
, Michael J. Keenan1, Kenneth M. West1, James P. Delany2 and J. Mark
Loftin3 |
1Louisiana State University, Baton Rouge, Louisiana, USA
2Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
3University of New Orleans, New Orleans, Louisiana, USA.
| Received |
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13 May 2005 |
| Accepted |
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25
August 2005 |
| Published |
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01
December 2005 |
©
Journal of Sports Science and Medicine (2005) 4, 406
- 414
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| ABSTRACT |
| The
association of age and weekly swim training distance with body water,
lean tissue, fat mass and regional adiposity was examined in 27 male
masters swimmers. Subjects ranged in age from 25.3 to 73.1 years (mean
age = 47.7 ± 11.1 years). Weekly swim distances, estimated from self-reported
swim logs, were from 3 400 to 17 500 m and averaged 10 016 ± 4 223
m. Total body water (TBW), and extracellular water (ECW) were predicted
from multi-frequency bioelectrical impedance analysis and intracellular
water was estimated by difference. Lean soft tissue, bone mineral
content, fat mass, and percent body fat were estimated from dual-energy
X-ray absorptiometry. Measures of skinfold thickness, waist circumference,
and abdominal sagittal diameter provided an indication of regional
adiposity. Total body water, ECW, and ICW mean values (ranges) were
as follows: 47.4 ± 4.6 L (37.9-56.9 L), 19.6 ± 1.8 L., (16.4-24.8
L), and 27.8 ± 3.2 L (21.5-34.4 L). Mean percent body fat levels were
21.9 ± 6.6% and ranged from 10.3 to 34.9%. Age was negatively associated
with ICW (p = 0.02) and with the ICW/TBW ratio (p = 0.00). Multiple-linear
regression analysis backward method suggested that both lean tissue
and fat mass were predictors of ICW although the association with
fat mass did not reach statistical significance (p = 0.00 and p =
0.06 for lean and fat mass respectively). There was a tendency for
greater lower abdominal thickness with increasing age (p = 0.08),
but no other associations were observed between age or with swimming
and body composition variables. Changes in ICW and the ration of ICW
to TBW appeared to be the strongest marker of aging in this group
of adult male competitive swimmers.
KEY
WORDS: Total body water, intracellular water, exercise, body
bomposition, dual-energy X-ray absorptiometry, bioelectrical impedance
analysis.
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