Department of Physical Education and Sports, Faculty of Sports Science, Sport and Health University Research Institute (iMUDS), University of Granada, Granada, Spain.
Department of Analytical Chemistry, University of Granada, Granada, Spain.
Eur J Sport Sci. 2023 Dec;23(12):2299-2310. doi: 10.1080/17461391.2023.2229854. Epub 2023 Aug 23.
Capsinoids may exert ergogenic effects on resistance exercises. However, the acute effects of capsinoids on neuromuscular performance in humans are unknown. Here, we aimed to investigate the acute effects of dihydrocapsiate on lower- and upper-body neuromuscular performance parameters in resistance-trained individuals. 25 young adults ( = 6 women; age = 26 ± 3 years; body mass index = 24.3 ± 2.8 kg/m) with ≥ 1-year resistance training experience were included in this triple-blind (participants, intervention researchers, and data analysts were blinded), placebo-controlled, crossover study. Lower- and upper-body ballistic strength (countermovement jump [CMJ] height and bench press throw [BPT] peak velocity), maximum dynamic strength (estimated 1 repetition maximum in squat and bench press [BP]), and strength-endurance (mean set velocity [squat] and number of repetitions to failure [bench press]) were assessed in 2 independent sessions (≥7 days separation). Participants ingested 12 mg of dihydrocapsiate or placebo 30 min before each trial. We found no significant differences between dihydrocapsiate and placebo conditions in ballistic strength, (CMJ height 33.20 ± 8.07 vs 33.32 ± 7.85 cm; BPT peak velocity 2.82 ± 0.77 vs 2.82 ± 0.74 m/s) maximal dynamic strength (estimated squat 1RM: 123.76 ± 40.63 vs 122.66 ± 40.97 kg; estimated BP 1RM: 99.47 ± 43.09 vs 99.60 ± 43.34 kg), and strength-endurance (squat mean set velocity 0.66 ± 0.07 vs 0.66 ± 0.05 m/s; number BP repetitions to failure 13.00 ± 3.56 vs 13.00 ± 4.78) (all ≥ 0.703). We conclude that dihydrocapsiate does not acutely improve neuromuscular performance in trained young adults.
辣椒素可能对抗阻运动有促进作用。然而，辣椒素对人体神经肌肉表现的急性影响尚不清楚。在此，我们旨在研究二氢辣椒素对有抗阻训练经验的个体的下半身和上半身神经肌肉表现参数的急性影响。 25 名年轻成年人（= 6 名女性；年龄= 26 ± 3 岁；体重指数= 24.3 ± 2.8 kg/m）被纳入这项三盲（参与者、干预研究人员和数据分析师均被蒙蔽）、安慰剂对照、交叉研究。下半身和上半身的弹性能量（深蹲跳 [CMJ] 高度和卧推抛射 [BPT] 最大速度）、最大动态力量（深蹲和卧推的估计 1 次重复最大量 [BP]）和力量耐力（深蹲的平均组速度 [BP] 和失败的重复次数 [BP]）在 2 个独立的测试中进行评估（间隔≥7 天）。参与者在每次试验前 30 分钟服用 12 毫克二氢辣椒素或安慰剂。我们发现二氢辣椒素和安慰剂条件之间在弹性能量方面没有显著差异，（CMJ 高度 33.20 ± 8.07 与 33.32 ± 7.85 cm；BPT 最大速度 2.82 ± 0.77 与 2.82 ± 0.74 m/s）最大动态力量（估计深蹲 1RM：123.76 ± 40.63 与 122.66 ± 40.97 kg；估计 BP 1RM：99.47 ± 43.09 与 99.60 ± 43.34 kg）和力量耐力（深蹲平均组速度 0.66 ± 0.07 与 0.66 ± 0.05 m/s；BP 重复失败次数 13.00 ± 3.56 与 13.00 ± 4.78）（均≥0.703）。我们的结论是，二氢辣椒素不会急性改善训练有素的年轻成年人的神经肌肉表现。
