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Carbohydrate-electrolyte solution effects on physical performance of military tasks.
Aviat Space Environ Med 1997; 68(5):384-91AS

Abstract

BACKGROUND

Physical performance of military tasks can deteriorate during field training.

HYPOTHESIS

Drinking a carbohydrate-electrolyte (CHO-E) beverage during military relevant training would improve fluid and caloric intake, and better sustain physical performance.

METHODS

Some 27 volunteers restricted to approximately 2600 kcal.d-1 were randomly assigned to one of three groups: CHO-E, placebo, or water. Fluid intake was ad libitum. The volunteers completed 3 d of field training in hot humid conditions (30 degrees C, 60% rh). Training days 1 and 2 each included a 16-21 km march over hilly terrain, marksmanship training, and 2 h of rock climbing. Day 3 included a 14.5 km march followed by marksmanship tests, a timed rock climb and a 0.7 km uphill (21% grade) run.

RESULTS

The CHO-E beverage provided an additional approximately 2800 kcal (p < 0.05) for the 3 d of training. There were no differences (ANOVA, p > 0.05) between the groups absolute or changes from pre-training values for fluid intake, body weight, climb time, run time, marksmanship, or mood. Those drinking CHO-E were, however, more likely to maintain uphill run performance after training (chi 2 = 7.2; p < 0.05) and more likely to maintain both uphill run and marksmanship ability (chi 2 = 17.2; p < 0.05). There was also an inverse relationship between caloric intake and deterioration of uphill run performance (r = -0.75; p < 0.05).

CONCLUSIONS

Persons drinking CHO-E or practicing good food discipline are more likely to sustain physical performance than those eating only a portion of their food. CHO-E provides an accessible source of calories which can be advantageous when limited food is available or inadaquate food consumption is likely.

Authors+Show Affiliations

Thermal and Mountain Medicine Division, USARIEM, Natick, MA 01760, USA.

Pub Type(s)

Clinical Trial
Journal Article
Randomized Controlled Trial
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

9143747

Citation

Montain, S J., et al. "Carbohydrate-electrolyte Solution Effects On Physical Performance of Military Tasks." Aviation, Space, and Environmental Medicine, vol. 68, no. 5, 1997, pp. 384-91.
Montain SJ, Shippee RL, Tharion WJ. Carbohydrate-electrolyte solution effects on physical performance of military tasks. Aviat Space Environ Med. 1997;68(5):384-91.
Montain, S. J., Shippee, R. L., & Tharion, W. J. (1997). Carbohydrate-electrolyte solution effects on physical performance of military tasks. Aviation, Space, and Environmental Medicine, 68(5), pp. 384-91.
Montain SJ, Shippee RL, Tharion WJ. Carbohydrate-electrolyte Solution Effects On Physical Performance of Military Tasks. Aviat Space Environ Med. 1997;68(5):384-91. PubMed PMID: 9143747.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Carbohydrate-electrolyte solution effects on physical performance of military tasks. AU - Montain,S J, AU - Shippee,R L, AU - Tharion,W J, PY - 1997/5/1/pubmed PY - 1997/5/1/medline PY - 1997/5/1/entrez SP - 384 EP - 91 JF - Aviation, space, and environmental medicine JO - Aviat Space Environ Med VL - 68 IS - 5 N2 - BACKGROUND: Physical performance of military tasks can deteriorate during field training. HYPOTHESIS: Drinking a carbohydrate-electrolyte (CHO-E) beverage during military relevant training would improve fluid and caloric intake, and better sustain physical performance. METHODS: Some 27 volunteers restricted to approximately 2600 kcal.d-1 were randomly assigned to one of three groups: CHO-E, placebo, or water. Fluid intake was ad libitum. The volunteers completed 3 d of field training in hot humid conditions (30 degrees C, 60% rh). Training days 1 and 2 each included a 16-21 km march over hilly terrain, marksmanship training, and 2 h of rock climbing. Day 3 included a 14.5 km march followed by marksmanship tests, a timed rock climb and a 0.7 km uphill (21% grade) run. RESULTS: The CHO-E beverage provided an additional approximately 2800 kcal (p < 0.05) for the 3 d of training. There were no differences (ANOVA, p > 0.05) between the groups absolute or changes from pre-training values for fluid intake, body weight, climb time, run time, marksmanship, or mood. Those drinking CHO-E were, however, more likely to maintain uphill run performance after training (chi 2 = 7.2; p < 0.05) and more likely to maintain both uphill run and marksmanship ability (chi 2 = 17.2; p < 0.05). There was also an inverse relationship between caloric intake and deterioration of uphill run performance (r = -0.75; p < 0.05). CONCLUSIONS: Persons drinking CHO-E or practicing good food discipline are more likely to sustain physical performance than those eating only a portion of their food. CHO-E provides an accessible source of calories which can be advantageous when limited food is available or inadaquate food consumption is likely. SN - 0095-6562 UR - https://www.unboundmedicine.com/medline/citation/9143747/Carbohydrate_electrolyte_solution_effects_on_physical_performance_of_military_tasks_ L2 - https://medlineplus.gov/carbohydrates.html DB - PRIME DP - Unbound Medicine ER -