Subjective perception of effort and lactacidemia. Study in young university students
Percepción subjetiva del esfuerzo y lactacidemia. Estudio en jóvenes universitarios.
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Alba Ospina, D., Betancur Pérez, J. F., & Osorio, J. H. . (2025). Subjective perception of effort and lactacidemia. Study in young university students. Archivos De Medicina , 25(2). https://doi.org/10.30554/archmed.25.2.5461.2025
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Alba Ospina, D., Betancur Pérez, J. F., & Osorio, J. H. . (2025). Subjective perception of effort and lactacidemia. Study in young university students. Archivos De Medicina , 25(2). https://doi.org/10.30554/archmed.25.2.5461.2025
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Introduction: Lactate and subjective perception of effort (SPE) are common markers of internal load; however, their convergence in maximal anaerobic efforts and in the Latin American university population is limited. Objective: To evaluate the association between subjective perception of effort (SPE) and post-exercise lactacidemia in healthy young people. Methods: Observational, prospective, cross-sectional, and analytical study in 211 participants (18-53 years) who completed a 60-second continuous jump test (CJ60). Capillary lactate was measured before and 5 minutes after exercise; SPE was recorded at the end. Spearman's correlations and multiple linear regression were applied for Δ lactate, with number of jumps, sex, age, basal lactate, and PSE as predictors. Results: Δ lactate was not associated with PSE (ρ=0.07; p=0.298), but it was associated with the number of jumps (ρ=0.57; p<0.001). Men showed higher Δ lactate than women (10.0±2.63 vs. 7.36±3.04 mmol/L). The number of jumps (β=0.107; p<0.001) and male sex (β=1.52; p<0.001) were independent predictors, while age, basal lactate, and PSE were not significant. Conclusions: During brief maximal effort, RPE appears to saturate and does not reflect metabolic load; its use in isolation may underestimate individual differences. It is recommended to supplement subjective monitoring with objective measurements (e.g., lactate).
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