They took extracts instead of a cranberry juice mix (usually about 15% cranberry juice). I wonder how much juice or whole cranberries one needs to consume to receive the benefit.
“A total of 14 trained runners were tested at i) baseline, ii) 2 h following an acute CE dose (0.7 g/kg of body mass), and iii) 4 weeks after daily supplement consumption (0.3 g/kg of body mass).”
No idea how that translates into real juice, but the actual results were not impressive.
“CE consumption for 28 d demonstrated a trend toward improving running times for the 1500-m TT (P = 0.10; η2 = 0.15), but not for the 400-m TT (P = 0.39; η2 = 0.07). Although NOT STATISTICALLY SIGNIFICANT, the faster running time during the 1500m TT translated to a 1.5% mean increase in running speeds. Baseline lactate levels were the same at all time points (P = 0.27; η2 = 0.11). CE significantly buffered the lactate peak at 1 min post-run for the 400-m TT (P = 0.01; η2 = 0.27), but not for the 1500-m TT (P = 0.33; η2 = 0.08) (Figure 2).”
https://e-pan.org/journal/view.php?doi=10.20463/pan.2023.0032