A1 Journal article (refereed)
Ventilatory threshold during incremental running can be estimated using EMG shorts (2012)

Tikkanen, O., Hu, M., Vilavuo, T., Tolvanen, P., Cheng, S., & Finni Juutinen, T. (2012). Ventilatory threshold during incremental running can be estimated using EMG shorts. Physiological Measurement, 33, 603-614. https://doi.org/10.1088/0967-3334/33/4/603

JYU authors or editors

Publication details

All authors or editors: Tikkanen, Olli; Hu, Min; Vilavuo, Toivo; Tolvanen, Pekka; Cheng, Sulin; Finni Juutinen, Taija

Journal or series: Physiological Measurement

ISSN: 0967-3334

eISSN: 1361-6579

Publication year: 2012

Volume: 33

Pages range: 603–614

Publisher: IOP Publishing

Publication country: United Kingdom

Publication language: English

DOI: https://doi.org/10.1088/0967-3334/33/4/603

Publication open access: Not open

Publication channel open access: 

Abstract

The present study examined whether shorts with textile electromyographic (EMG) electrodes can be used to detect second ventilatory threshold (V(T2)) during incremental treadmill running. Thirteen recreationally active (REC) and eight endurance athletes were measured for EMG, heart rate, blood lactate and respiratory gases during VO(2max) test (3 min ramps, 1 km·h(-1) increments). V(T)(2), onset of blood lactate accumulation (OBLA) and EMG threshold (EMG(T)) were determined. In athletes, OBLA occurred at 56 ± 6 mL·kg(-1)·min(-1), V(T2) occurred at 59 ± 6 mL·kg(-1)·min(-1), and EMG(T) at 62 ± 6 mL·kg(-1)·min(-1) without significant differences between methods (analysis of variance: ANOVA). In REC participants, OBLA occurred at 40 ± 10 mL·kg(-1)·min(-1), V(T2) occurred at 43 ± 7 mL·kg(-1)·min(-1), and EMG(T) at 41 ± 9 mL·kg(-1)·min(-1) without significant differences between methods (ANOVA). For the entire group, correlation between EMG(T) and V(T2) was 0.86 (P < 0.001) and 0.84 (P < 0.001) between EMG(T) and OBLA. Limits of agreement between EMG(T) and V(T2) were narrower in athletes than in REC participants. Thus, it is concluded that estimation of V(T2) using EMG(T) in athletes is more valid than in REC participants. In practice, experienced runners could use online feedback from EMG garments to monitor whether their running intensity is near V(T2).

Keywords: smart textiles; treadmills; measuring technology; electromyography; long-distance running; training; oxygen uptake; tracking

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2012

JUFO rating: 1