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Effect of a high protein meat diet on muscle and cognitive functions: A randomised controlled dietary intervention trial in healthy men
Clinical Nutrition, 06/02/2011
Jakobsen LH et al. – The high protein(HP) group improved their reaction time significantly compared with the usual group. Branched chain amino acids and phenylalanine in plasma were significantly increased following the HP diet, which may explain the improved reaction time. Healthy young males fed a HP diet improved reaction time. No adverse effects of the HP diet were observed.
Methods- Randomised intervention study was conducted with 23 healthy males (aged 19–31 yrs).
- All subjects consumed a Usual Protein (UP) diet (1.5 g protein/kg BW) for a 1-wk run-in period before the intervention period where they were assigned to either a UP or a High Protein (HP) diet (3.0 g protein/kg BW) for 3-wks with controlled intake of food and beverages.
- Blood and urine samples were taken along with measurements of physiological functions at baseline and at the end of the intervention period.
- HP group improved their reaction time significantly compared with the UP group.
- Branched chain amino acids and phenylalanine in plasma were significantly increased following the HP diet, which may explain the improved reaction time.
