PMID- 2104036
OWN - NLM
STAT- MEDLINE
DCOM- 19901204
LR  - 20140603
VI  - 14
IP  - 9
DP  - 1990 Sep
TI  - Differential effects of two very low calorie diets on aerobic and anaerobic 
      performance.
PG  - 779-87
AB  - To determine the effects on physical performance of two different very low 
      calorie diets (VLCD), 10 moderately obese women (BMI 32.7) were tested before and 
      after an outpatient weight loss of 17 kg. Diet 1 (D1, n = 5) subjects lost 17.2 
      kg on 450-550 kcal/d from common food regimen adjusted for stature providing 
      protein at 1.5 g/kg IBW and less than 10 g carbohydrate (CHO). Diet 2 (D2, n = 5) 
      subjects lost 18.1 kg on a fixed composition 420 kcal/d formula providing 70 g 
      (1.2 g/kg IBW) protein and 30 g CHO. Aerobic performance (VO2 max) was determined 
      on a cycle ergometer. VO2 max did not change with D1 (2.16 to 2.01 l/min), while 
      it decreased on D2 (2.44 to 2.06 l/min, P less than 0.05). Anaerobic function was 
      assessed as peak quadricep strength on an isokinetic dynamometer, with anaerobic 
      endurance taken as the time and number of repetitions to fatigue (less than 50 
      percent peak strength). Peak strength did not change on D1 (95.8 to 86.2 ft-lb), 
      but it declined with D2 (102.0 to 89.4 ft-lb, P less than 0.05). Anaerobic time 
      to fatigue did not change with either diet group. In conclusion, it is possible 
      that the higher (and individualized) protein intake of D1 allowed the better 
      preservation of VO2 max, while the higher CHO of D2 did not benefit anaerobic 
      function. Our data suggest that physical performance tests could be used to 
      assess for functional tissue preservation when diets are used for major weight 
      loss.
FAU - Davis, P G
AU  - Davis PG
AD  - Department of Food Science and Nutrition, University of Minnesota, St. Paul.
FAU - Phinney, S D
AU  - Phinney SD
LA  - eng
PT  - Clinical Trial
PT  - Controlled Clinical Trial
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - Int J Obes
JT  - International journal of obesity
JID - 7703240
RN  - 0 (Dietary Carbohydrates)
RN  - 0 (Dietary Proteins)
SB  - IM
MH  - Adult
MH  - Biomechanical Phenomena
MH  - *Diet, Reducing
MH  - Dietary Carbohydrates/administration & dosage
MH  - Dietary Proteins/administration & dosage
MH  - Energy Intake
MH  - *Exercise
MH  - Female
MH  - Humans
MH  - Obesity/*drug therapy/metabolism
EDAT- 1990/09/01 00:00
MHDA- 1990/09/01 00:01
CRDT- 1990/09/01 00:00
PHST- 1990/09/01 00:00 [pubmed]
PHST- 1990/09/01 00:01 [medline]
PHST- 1990/09/01 00:00 [entrez]
PST - ppublish
SO  - Int J Obes. 1990 Sep;14(9):779-87.