期刊
NUTRIENTS
卷 12, 期 7, 页码 -出版社
MDPI
DOI: 10.3390/nu12072125
关键词
dietary intake; protein; training; nitrogen balance; military
资金
- UK Ministry of Defence
We assessed dietary intake and nitrogen balance during 14 weeks of Basic Training (BT) in British Army Infantry recruits. Nineteen men (mean +/- SD: age 19.9 +/- 2.6 years, height: 175.7 +/- 6.5 cm, body mass 80.3 +/- 10.1 kg) at the Infantry Training Centre, Catterick (ITC(C)) volunteered. Nutrient intakes and 24-h urinary nitrogen balance were assessed in weeks 2, 6 and 11 of BT. Nutrient intake was assessed using researcher-led weighed food records and food diaries, and Nutritics professional dietary software. Data were compared between weeks using a repeated-measures analysis of variance (ANOVA) with statistical significance set atp <= 0.05. There was a significant difference in protein intake (g) between weeks 2 and 11 of BT (115 +/- 18 vs. 91 +/- 20 g,p= 0.02, ES = 1.26). There was no significant difference in mean absolute daily energy (p= 0.44), fat (p= 0.79) or carbohydrate (CHO) intake (p= 0.06) between weeks. Nitrogen balance was maintained in weeks 2, 6 and 11, but declined throughout BT (2: 4.6 +/- 4.1 g, 6: 1.6 +/- 4.5 g, 11: -0.2 +/- 5.5 g,p= 0.07). A protein intake of 1.5 g center dot kg(-1)center dot d(-1)may be sufficient in the early stages of BT, but higher intakes may be individually needed later on in BT.
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