Key result
Acute capsaicin cuts 1,500-m running time by ~5 seconds vs. placebo in active men.
Why the study?
The acute effect of capsaicin supplementation on short-duration running performance, perceived exertion, and blood lactate in physically active adults was not well established.
Does acute capsaicin supplementation improve 1,500-m running time-trial performance in physically active men?
RCT (n=10)
Double-blind
randomized
Does acute capsaicin supplementation improve 1,500-m running time-trial performance in physically active men?
Absolute Event Rate: 371.6% vs 376.7%
p-value: p=0.009
Acute capsaicin supplementation slightly improves 1,500-m running time and reduces perceived exertion in physically active men.
Supports acute capsaicin as ergogenic aid for 1500-m runs; extends evidence to time-trial performance in active men.
de Freitas, MC, Cholewa, JM, Gobbo, LA, de Oliveira, JVNS, Lira, FS, and Rossi, FE. Acute capsaicin supplementation improves 1,500-m running time-trial performance and rate of perceived exertion in physically active adults. J Strength Cond Res 32(2): 572-577, 2018-The purpose of this study was to investigate the acute effect of capsaicin supplementation on performance, rate of perceived exertion (RPE), and blood lactate concentrations during short-duration running in physically active adults. Ten physically active men (age = 23.5 ± 1.9 years, mass = 78.3 ± 12.4 kg, and height = 177.9 ± 5.9 cm) completed 2 randomized, double-blind trials: Capsaicin condition (12 mg) or a placebo condition. Forty-five minutes after supplement consumption, the participants performed a 1,500-m running time trial. Time (in seconds) was recorded. Blood lactate concentration was analyzed at rest, immediately after exercise, after 5, 10, and 30 minutes during recovery and the RPE was collected after exercise. The time was significantly (t = 3.316, p = 0.009) lower in the capsaicin (371.6 ± 40.8 seconds) compared with placebo (376.7 ± 39 seconds). Rate of perceived exertion was significantly (t = 2.753, p = 0.022) less in the capsaicin (18.0 ± 1.9) compared with the placebo (18.8 ± 1.3). Lactate increased across time for both conditions without significant differences between (p > 0.05). In summary, acute capsaicin supplementation improves middle distance running (1,500 m) performance and reduced RPE in physically active adults.
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Freitas et al. (2017) conducted an RCT in Physically active adults (n=10). Capsaicin vs. Placebo was evaluated on 1,500-m running time (seconds) (p=0.009). Acute capsaicin supplementation significantly reduced 1,500-m running time compared with placebo (371.6 vs 376.7 seconds; p=0.009) in physically active men.
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