Research article - (2026)25, 282 - 290
DOI: https://doi.org/10.52082/jssm.2026.282
Monitoring Resistance Training Intensity Using Load-Intercept from The Load-Velocity Relationship Variables: The Case of Deadlift
Zhaoqian Li1, Qingzhou Chang2, Zongwei Chen3, Litong Yang2, Xing Zhang3, Ruixuan Li4, Hongzhen Zhang1,
1School of Physical Education, Shandong University, Jinan, China
2Physical Training College, Beijing Sport University, Beijing, China
3Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain
4Laboratory of Sports Human Science, School of Physical Education, China University of Geosciences (Wuhan)

Hongzhen Zhang
✉ School of Physical Education, Shandong University, Jinan, China
Email: 201799000046@sdu.edu.cn
Received: 17-05-2025 -- Accepted: 07-01-2026
Published (online): 01-03-2026
Narrated in English
ABSTRACT

This study aimed to investigate the feasibility of using deadlift load-velocity (L-V) relationship variables, specifically the load-intercept (L0), to monitor resistance training intensity. Fifteen well-trained male and fifteen well-trained female athletes completed two incremental load tests, recording movement mean velocity (MV) until reaching one repetition maximum (1RM) in two sessions. Although L0 (CV = 4.98%, ICC = 0.974) demonstrated lower between-session reliability than 1RM (CV = 3.48%, ICC = 0.989), its reliability was still at an acceptable level. Furthermore, the 1RM/L0 ratio showed acceptable between-subjects variability (CV = 6.39%). Consequently, L0 could serve as an alternative reference for prescribing training intensity in place of the 1RM. Both the %1RM-MV and %L0-MV relationships were found to be valid for monitoring training intensity in the high-intensity range (absolute error ≤ 4.05%, at around 80% and 90%1RM) but not in the low-intensity range (absolute error ≥ 6.31%, from 40% to 70%1RM). Although not a complete replacement for the 1RM, the %L0 - MV relationship still offers a practical and convenient method for monitoring deadlift training in high-intensity range (above 80%1RM), particularly in settings where frequent assessments are required.
Key words: Exercise intensity, neuromuscular function, physical training, training intensity, velocity-based training

Key Points
  • The one repetition maximum (1RM)/load-intercept () ratio demonstrates acceptable between-subject variability in deadlift, which supports its usefulness as a general reference metric for intensity prescription at high intensities (above 80%1RM and 65%).
  • Both the %1RM-mean velocity (MV) and %-MV relationships can be applied to accurately predict training intensity during the deadlift at higher intensities above 80%1RM and 65%, whereas their predictive accuracy diminishes at lower intensities
  • Although was not as reliable as the 1RM, can still be used to reliably and practically monitor training intensity in male and female athletes at high intensities, offering an alternative method to traditional 1RM testing.








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Monitoring Resistance Training Intensity Using Load-Intercept from The Load-Velocity Relationship Variables: The Case of Deadlift
Zhaoqian Li, Qingzhou Chang, Zongwei Chen, Litong Yang, Xing Zhang, Ruixuan Li, Hongzhen Zhang
2026(25), 282 - 290.
DOI: https://doi.org/10.52082/jssm.2026.282