The acceptance of lentils as a pre‐meal in soccer‐specific intermittent exercise and its effects on performance

Abstract

Our objective was to examine the acceptance, and effects on metabolism and performance of lentils as a pre‐exercise meal in a simulated soccer match. Thirteen male athletes participated in 4 trials in a repeated crossover design. Along with a fasted control (C) condition, isocaloric low GI‐high protein [lentils (L)], high GI‐high protein [potato & egg whites (PE)], or high GI‐low protein [potato (P)] meals were consumed 2‐hr before a soccer match. Blood and expired gas samples were collected to assess macronutrient metabolism. Distance covered on 5×1‐min sprints (2.5‐min rest) performed at the end of the match assessed performance. A 5‐point Symptoms Rating Scale (SRS) was used to assess nausea, bloating, hunger, fullness and flatulence. Serum insulin at exercise initiation was higher in P than all other conditions (p<0.001). During exercise, the oxidation rates for carbohydrate was higher and for fat was lower in P compared to C (p<0.05). Initial distance covered was greater (sprints 1 & 2) for L and PE (sprint 2) than fasting. Ratings of perceived exertion (RPE) throughout exercise were lower in L compared to C and P (p<0.05). No differences in symptoms (SRS) were apparent among the fed conditions (p>0.05). Also, the % of meals consumed was similar (80, 81 & 78% for L, PE & P, respectively). Our results show improvements in initial repeated sprint performance after L and PE meals compared to C. This finding along with the L meal's low RPE and its acceptability indicates a possible beneficial effect of consuming a low GI‐high protein pre‐exercise L meal. (Supported by research grants from the Saskatchewan Pulse Growers and NSERC Canada)