Biology of Sport
eISSN: 2083-1862
ISSN: 0860-021X
Biology of Sport
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2/2022
vol. 39
 
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abstract:
Original paper

Effects of post-tetanic potentiation induced by whole-body electrostimulation and post-activation potentiation on maximum isometric strength

Manuel Dote-Montero
1
,
Ignacio Pelayo-Tejo
2
,
Pablo Molina-Garcia
1
,
Abraham Carle-Calo
3
,
Amador García-Ramos
2
,
Luis J. Chirosa-Ríos
2
,
Ignacio J. Chirosa-Ríos
2
,
Francisco J. Amaro-Gahete
1, 3

1.
PROmoting FITness and Health through Physical Activity Research Group (PROFITH), Sport and Health University Research Institute (iMUDS), Department of Physical Education and Sports, Faculty of Sports Sciences, University of Granada, Camino de Alfacar s/n, 18071, Granada, Spain
2.
Department of Physical Education and Sports, Faculty of Sports Sciences, University of Granada, Camino de Alfacar s/n, 18071, Granada, Spain
3.
EFFECTS-262 Research Group, Department of Physiology, Faculty of Medicine, University of Granada, Avenida de la investigación Nº 11, 1807, Granada, Spain
Biol Sport. 2022;39(2):451–461.
Online publish date: 2021/06/01
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It is currently unknown the most effective potentiation protocol to increase maximum strength. Hence, we investigated the separated and combined effects of post-tetanic potentiation (PTP) induced by wholebody electrostimulation (WB-EMS) and post-activation potentiation (PAP) induced by voluntary maximum isometric contractions on maximum isometric strength. Ten trained males were randomly evaluated on four occasions. In session A, maximum isometric strength (split squat) was measured in minutes 1, 4, and 8. In session B, the measurements were taken in minutes 2, 6, and 10. In session C, a WB-EMS protocol was applied to elicit PTP and the measurements were performed in minutes 1, 4, and 8. In session D, the same WB-EMS protocol was applied and the measurements were taken in minutes 2, 6, and 10. No significant differences in maximum isometric strength were observed between: (i) the control and WB-EMS in minutes 1 vs. 1 and 2 vs. 2; (ii) the control and PAP in minutes 1 vs. 4, 1 vs. 8, 2 vs. 6, and 2 vs. 10; and (iii) the PAP and WB-EMS plus PAP in minutes 4 vs. 4, 8 vs. 8, 6 vs. 6, and 10 vs. 10. In contrast, the WB-EMS plus PAP revealed a significant increase of 54% (~450 N) compared to the WB-EMS in minutes 4 and 8 compared to the minute 1 (p < 0.001), but not between minutes 2 vs. 6 and 2 vs. 10. The present results showed that PTP induced by WB-EMS in isolation or combined with PAP induced by voluntary maximum isometric contractions did not produce a significant increase in maximum isometric strength compared to the control and PAP alone, respectively.
keywords:

Twitch contraction, Electrical stimulation, Power, Training, Exercise, Whole-body electrostimulation

 
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