PMID- 9173937
OWN - NLM
STAT- MEDLINE
DCOM- 19970822
LR  - 20171213
IS  - 8750-7587 (Print)
IS  - 0161-7567 (Linking)
VI  - 82
IP  - 6
DP  - 1997 Jun
TI  - Weight loss and wrestling training: effects on nutrition, growth, maturation, 
      body composition, and strength.
PG  - 1751-9
AB  - Adolescent wrestlers (n = 9, 15.4 yr) and recreationally active control 
      adolescent males (n = 7, 15.7 yr) were measured before, at the end (late season), 
      and 3.5-4 mo after a wrestling season to assess the influence of dietary 
      restriction on growth, maturation, body composition, protein nutrition, and 
      muscular strength. Controls consumed adequate amounts of energy, carbohydrate 
      (CHO), protein, and fat, and demonstrated normal gains in weight, fat mass (FM) 
      and fat-free mass (FFM). Wrestlers consumed a high-CHO (61 +/- 2% kcal), low-fat 
      (24 +/- 2% kcal) diet during the season but did not consume adequate energy (24.7 
      +/- 3.5 kcal.kg-1.day-1) or protein (0.9 g.kg-1.day-1). Deficient dietary intake 
      reduced prealbumin levels (26.0 +/- 1.9 vs. 20.2 +/- 0.9 mg/dl) and slowed the 
      accrual of lean arm and thigh cross-sectional muscle areas (AXSECT, TXSECT, 
      respectively). For wrestlers, dietary deficiency also decreased weight (60.3 +/- 
      3.5 to 58.0 +/- 3.3 kg), relative fat (9.9 +/- 0.5 to 8.0 +/- 0.7%), and FM (6.0 
      +/- 0.5 to 4.7 +/- 0.6 kg). Postseason, wrestlers and controls consumed similar 
      diets, and wrestlers had significant increases in prealbumin, AXSECT, and TXSECT. 
      Wrestlers also increased their weight (6.1 +/- 0.6 kg), FFM (3.0 +/- 0.6 kg), and 
      FM (3.2 +/- 0.5 kg) postseason. Rates of bone maturation and segmental growth 
      were not different between the groups. The wrestlers had reductions in elbow and 
      knee strength from preseason to late season but increases postseason. Lean tissue 
      changes were associated with the changes in strength and power (r = 0.72-0.91, P 
      < 0.001). After covariance for FFM or limb-specific cross section, few 
      significant changes remained. In conclusion, dietary restriction reduced protein 
      nutrition and muscular performance but produced little effect on linear growth 
      and maturation. Prealbumin levels and the rate of lean tissue accrual were 
      positively related (r = 0.43, P < or = 0.05).
FAU - Roemmich, J N
AU  - Roemmich JN
AD  - Applied Physiology Research Laboratory, Kent State University, Ohio 44242, USA. 
      jr5n@virginia.edu
FAU - Sinning, W E
AU  - Sinning WE
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - J Appl Physiol (1985)
JT  - Journal of applied physiology (Bethesda, Md. : 1985)
JID - 8502536
RN  - 0 (Dietary Proteins)
SB  - IM
MH  - Adolescent
MH  - Aging/*physiology
MH  - Anthropometry
MH  - *Body Composition
MH  - Diet Records
MH  - Dietary Proteins/administration & dosage
MH  - Elbow Joint/physiology
MH  - Growth
MH  - Humans
MH  - Knee Joint/physiology
MH  - Male
MH  - *Nutritional Physiological Phenomena
MH  - *Physical Education and Training
MH  - Physical Exertion
MH  - *Weight Loss
MH  - *Wrestling
EDAT- 1997/06/01 00:00
MHDA- 1997/06/01 00:01
CRDT- 1997/06/01 00:00
PHST- 1997/06/01 00:00 [pubmed]
PHST- 1997/06/01 00:01 [medline]
PHST- 1997/06/01 00:00 [entrez]
AID - 10.1152/jappl.1997.82.6.1751 [doi]
PST - ppublish
SO  - J Appl Physiol (1985). 1997 Jun;82(6):1751-9. doi: 10.1152/jappl.1997.82.6.1751.