acute effects of high-intensity interval training on eeg ...

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Subjects (N = 8) performed a Tabata protocol with two intervals of push-ups, squats, planks and lunges (see figure 1). Spontaneous resting EEG was recorded.
ACUTE EFFECTS OF HIGH-INTENSITY INTERVAL TRAINING ON EEG BRAIN ACTIVITY Christian Merz, Diana Henz, Lisa Ulrich & Wolfgang I. Schöllhorn Institute of Sport Science, Johannes Gutenberg-University of Mainz

Introduction High-intensity interval training (HIIT) has become progressively popular in the last years because of its large effects on exercise capacity and the small-time requirement (Tabata et al., 1996; Sumpena & Sidik, 2017). Tabata Training is a particular HIIT technique and was first described by the Japanese scientist Izumi Tabata in 1996. It is a training of eight all-out exercise bouts of 20 seconds followed by 10 seconds of rest for a total of 4 minutes of exercise after warm-up and followed by a cool-down. Recent HIIT studies have researched the impact of aerobic and anaerobic capacity (for an overview see Foster et al., 2015; Batacan, Duncan, Dalbo, Tucker & Fenning, 2017; Imanudin & Sultoni, 2017; Sumpena & Sidik, 2017). Recent electroencephalographic (EEG) studies have shown effects of physical exercise on brain activity (for an overview see Lardon & Polich, 1996; Crabbe & Dishman, 2004; Brümmer, Schneider, Abel, Vogt & Strüder, 2011). To date, there are no systematical studies on the effects of HIIT on brain activity. In the present study, we investigated acute effects of Tabata training on spontaneous EEG brain activity.

Method

EEG brain activity

Subjects (N = 8) performed a Tabata protocol with two intervals of push-ups, squats, planks and lunges (see figure 1). Spontaneous resting EEG was recorded from nineteen electrodes according to the international 10-20 system for 2-min (eyes open) in Theta- (4-7.5 Hz), Alpha 1- (8-10 Hz), Alpha 2- (10-13 Hz), Beta(13-30 Hz) and Gamma power (30-70 Hz) before (Pretest), immediately after (Posttest) and ten minutes after the exercise (10min after Posttest). Subjective physical effort was assessed.

EEG - Pretest

HIIT - Tabata

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Figure 1: Order of exercise (Tabata protocol)

EEG Posttest

EEG - 10 min after Posttest

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Figure 2: Experimental procedure μV2

Results μV²

EEG data revealed a significant decrease in alpha 1- and theta power in the frontal lobe (Fz) after the exercise compared to the pretest. After ten minutes recovery, a significant increase in alpha 1- (F3, Fz, F4) and beta power (Fz) was observed in the frontal lobe and in alpha 2 power in the parietal (Pz, P3), the central (Cz) and the frontal lobe (Fz) compared to the measurement taken immediately after the exercise. Comparing recovery phase and pretest, there is a significant increase in beta- (F4, Fz) and gamma power (F4) in the right frontal lobe. μV²

Discussion The results indicate a decrease of EEG brain activity immediately after the Tabata training and a delayed increase in brain activation after a ten-minute recovery. This interpret a specific regulation of brain activity after high-intensity interval training which is different to the brain activity after aerobic exercise (Brümmer et al., 2011).

Figure 2: EEG theta-, alpha 1-, aplha 2-, beta- and gamma brain activity before (Pretest), immediately after (Posttest), and ten minutes after the exercise (10min after Posttest).

References Batacan, R. B., Duncan, M. J., Dalbo, V. J., Tucker, P. S., & Fenning, A. S. (2017). Effects of high-intensity interval training on cardiometabolic health: a systematic review and meta-analysis of intervention studies. Br J Sports Med, 51(6), 494-503. Brümmer, V., Schneider, S., Abel, T., Vogt, T., & Strüder, H. K. (2011). Brain cortical activity is influenced by exercise mode and intensity. Med Sci Sports Exerc., 43, 1863-1872 Crabbe, J. B. & Dishman, R. K. (2004). Brain electrocortical activity during and after exercise: A quantitative synthesis. Psychophysiology, 41(4), 563–574. Foster, C., Farland, C. V., Guidotti, F., Harbin, M., Roberts, B., Schuette, J., Tuuri, A., Doberstein. S. & Porcari, J. P. (2015). The effects of high intensity interval training vs steady state training on aerobic and anaerobic capacity. Journal of sports science & medicine, 14(4), 747. Imanudin, I., & Sultoni, K. (2017). Tabata Training for Increasing Aerobic Capacity. In IOP Conference Series: Materials Science and Engineering (Vol. 180, No. 1, p. 012205). IOP Publishing. Lardon, M. T., & Polich, J. (1996). EEG changes from long-term physical exercise. Biological psychology, 44(1), 19-30. Sumpena, A., & Sidik, D. Z. (2017). The Impact of Tabata Protocol to Increase the Anaerobic and Aerobic Capacity. In IOP Conference Series: Materials Science and Engineering (Vol. 180, No. 1, p. 012189). IOP Publishing. Tabata, I., Nishimura, K., Kouzaki, M., Hirai, Y., Ogita, F., Miyachi, M., & Yamamoto, K. (1996). Effects of moderate-intensity endurance and high-intensity intermittent training on anaerobic capacity and VO2max. Medicine and science in sports and exercise, 28(10), 1327-1330.

Corresponding authors: [email protected]