Ahokas Essi K, Hanstock Helen G, Kyröläinen Heikki, Ihalainen Johanna K
Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland.
Swedish Winter Sports Research Centre, Department of Health Sciences, Mid Sweden University, Östersund, Sweden.
Front Sports Act Living. 2025 Mar 4;7:1462901. doi: 10.3389/fspor.2025.1462901. eCollection 2025.
The aim of this study was to investigate whether regular use of infrared sauna (IRS) after training can promote neuromuscular performance and positive changes in body composition during a 6-week training period.
Forty female team sport athletes were pair-matched into two groups: IRS ( = 20) and control (CON; = 20). Physical performance tests, body composition and hypertrophy measurements (dual-energy x-ray absorptiometry and ultrasound of m. vastus lateralis) were performed PRE and POST a 6-week strength and power training period, involving 2-3 sessions per week. Performance tests included a 20 m sprint, squat jump (SJ), countermovement jumps with body weight (CMJ) as well as with 15, 25, and 50% additional load (CMJ15%, CMJ25%, and CMJ50%), and a maximal isometric leg press (MVC). Participants in the IRS-group used IRS (10 min, 50℃) after training three times per week.
Training improved neuromuscular performance and muscle hypertrophy in both groups ( < 0.05). Following the discovery of an interaction effect for CMJ15% height ( = 0.002) and peak power ( = 0.010), tests revealed higher jump height POST-IRS ( = 0.006) and PRE-CON ( = 0.023) compared to PRE-IRS, and higher peak power POST-IRS ( = 0.002) compared to PRE-IRS. Furthermore, an interaction effect was observed for 5 m split time of the 20 m sprint ( = 0.020), but no differences were found between groups and timepoints. There were no interactions for the hypertrophy measures.
Incorporating post-exercise IRS bathing does not significantly impact hypertrophy gains, but might boost long-term power production capabilities.
本研究旨在调查在为期6周的训练期间，训练后定期使用红外桑拿（IRS）是否能促进神经肌肉性能以及身体成分的积极变化。
40名女性团队运动运动员配对分为两组：IRS组（n = 20）和对照组（CON；n = 20）。在为期6周的力量和功率训练期前后进行身体性能测试、身体成分和肌肉肥大测量（双能X线吸收法和股外侧肌超声），每周进行2 - 3次训练。性能测试包括20米短跑、深蹲跳（SJ）、体重下的反向移动跳（CMJ）以及额外增加15%、25%和50%负荷时的反向移动跳（CMJ15%、CMJ25%和CMJ50%），以及最大等长腿部推举（MVC）。IRS组的参与者在每次训练后使用IRS（10分钟，50℃），每周三次。
两组的训练均改善了神经肌肉性能和肌肉肥大（P < 0.05）。在发现CMJ15%高度（P = 0.002）和峰值功率（P = 0.010）存在交互作用后，测试显示与训练前的IRS组相比，训练后的IRS组跳得更高（P = 0.006），且与训练前的CON组相比也更高（P = 0.023），与训练前的IRS组相比，训练后的IRS组峰值功率更高（P = 0.002）。此外，观察到20米短跑5米分段时间存在交互作用（P = 0.020），但组间和时间点之间未发现差异。肌肉肥大测量指标不存在交互作用。
运动后进行IRS沐浴对肌肉肥大增加没有显著影响，但可能会提高长期的功率产生能力。
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