Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy.
Institute of Mountain Emergency Medicine, Eurac Research, Bolzano, Italy.
J Strength Cond Res. 2023 Sep 1;37(9):1815-1820. doi: 10.1519/JSC.0000000000004471. Epub 2023 Feb 2.
Vinetti, G, Rossi, H, Bruseghini, P, Corti, M, Ferretti, G, Piva, S, Taboni, A, and Fagoni, N. The functional threshold power field test exceeds laboratory performance in junior road cyclists. 37(9): 1815–1820, 2023—The functional threshold power (FTP) field test is appealing for junior cyclists, but it was never investigated in this age category, and even in adults, there are few data on FTP collected in field conditions. Nine male junior road cyclists (16.9 ± 0.8 years) performed laboratory determination of maximal aerobic power (MAP), 4-mM lactate threshold (P), critical power (CP), and the curvature constant (′), plus a field determination of FTP as 95% of the average power output during a 20-minute time trial in an uphill road. The level of significance was set at < 0.05. Outdoor FTP (269 ± 34 W) was significantly higher than CP (236 ± 24 W) and P (233 ± 23 W). The of the field FTP test (66.9 ± 4.4 ml·kg·min) was significantly higher than the assessed in the laboratory (62.7 ± 3.7 ml·kg·min). Functional threshold power was correlated, in descending order, with MAP ( = 0.95), P ( = 0.94), outdoor and indoor ( = 0.93 and 0.93, respectively), CP ( = 0.84), and ′ ( = 0.66). It follows that in junior road cyclists, the FTP field test was feasible and related primarily to aerobic endurance parameters and secondarily, but notably, to ′. However, the FTP field test significantly exceeded all laboratory performance tests. When translating laboratory results to outdoor uphill conditions, coaches and sport scientists should consider this discrepancy, which may be particularly enhanced in this cycling age category.
维内蒂、G、罗西、H、布鲁塞吉尼、P、科尔蒂、M、费雷蒂、G、皮瓦、S、塔博尼、A 和法戈尼、N. 功能阈功率现场测试在青少年公路自行车运动员中优于实验室表现。37(9)：1815–1820，2023—功能阈功率（FTP）现场测试对青少年自行车运动员很有吸引力，但从未在这个年龄段进行过研究，即使在成年人中，在野外条件下收集的 FTP 数据也很少。9 名男性青少年公路自行车运动员（16.9 ± 0.8 岁）进行了实验室最大有氧能力（MAP）、4-毫摩尔乳酸阈（P）、临界功率（CP）和曲率常数（′）的测定，以及在上坡路上进行的 20 分钟计时赛中平均功率输出的 95%的野外 FTP 测定。显著性水平设置为 < 0.05。户外 FTP（269 ± 34 W）明显高于 CP（236 ± 24 W）和 P（233 ± 23 W）。野外 FTP 测试的 （66.9 ± 4.4 ml·kg·min）明显高于实验室评估的 （62.7 ± 3.7 ml·kg·min）。FTP 与 MAP（ = 0.95）、P（ = 0.94）、户外和室内 （ = 0.93 和 0.93）、CP（ = 0.84）和 ′（ = 0.66）呈降序相关。因此，在青少年公路自行车运动员中，FTP 现场测试是可行的，主要与有氧耐力参数相关，其次与 ′相关，但值得注意的是，相关性明显。然而，FTP 现场测试明显优于所有实验室性能测试。当将实验室结果转换为户外上坡条件时，教练和运动科学家应该考虑到这种差异，在这个自行车年龄段，这种差异可能会特别明显。
