Original Research ARTICLE
Mean propulsive velocity is a viable method for adjusting the resistance-training load at moderate altitude
- 1Division of Sport Science, School of Health Sciences, Orebro University, Sweden
- 2Department of Health Sciences, Faculty of Human Sciences, Mid Sweden University, Sweden
- 3Department of Physical Education and Sports, University of Granada, Spain
- 4Lehman College, United States
We examined the viability of using mean propulsive velocity (MPV) to adjust the load in the countermovement jump (CMJ) at moderate altitude. Twenty-four volunteers were assigned to a 4-week power-oriented resistance training (RT) program in either normoxia (N, 690 m) or intermittent hypobaric hypoxia (IH, 2320 m). The load was adjusted to maintain execution velocity of CMJ at 1m·s-1 of MPV. Relative peak power output (Prel), and percentage of velocity loss throughout the sets (VL) were determined for each session. The internal load was measured by the rating of perceived exertion (RPE). The absolute load lifted was higher in IH compared to N (75.6±8.4 vs. 58.5±12.3 kg P<0.001). However, similar relative increases for both groups were found when comparing the final values (IH:8.2%, P=0.007; N:9.8%, P=0.03) with no changes in VL between groups (P=0.36). Post-study Prel improved significantly only in IH (+7% W·kg-1, P=0.002). Mean RPE was greater in IH versus N (6.8±1.5 vs. 5.6±2, P<0.001). The MPV seems to be a viable method for adjusting external load during RT at moderate altitude. However, given that RT at moderate altitude increases RPE, it is prudent to monitor internal load when using the MPV to best determine the actual physiological stress of the session.
Keywords: strength, hypobaric hypoxia, Monitoring, power, Resistance Training
Received: 02 Aug 2019;
Accepted: 10 Oct 2019.
Copyright: © 2019 Rodríguez-Zamora, Padial, Schoenfeld and Feriche. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Dr. Lara Rodríguez-Zamora, Division of Sport Science, School of Health Sciences, Orebro University, Örebro, Sweden, firstname.lastname@example.org