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Purpose <p>Resistance training (RT) configurations can influence psycho-affective responses, potentially affecting exercise adherence. However, the impact of RT protocols with equalized volume load and intensity on affective valence and enjoyment remains unclear. This study aimed to investigate the effect of two RT protocols with distinct repetition schemes and rest intervals on psycho-affective responses in physically active individuals.</p> Methods <p>Twelve participants completed two RT sessions: (i) 3 × 10 with 60-s rest intervals and (ii) 8 × 3 with 120-s rest intervals. Both protocols maintained equalized relative intensity (85% of 10RM or 3RM) and volume load. Affective valence (feeling scale) was assessed pre-, during, and post-exercise. Heart rate variability (HRV) metrics were measured before and 30&#xa0;min after exercise. The ratings of perceived exertion (RPE) and enjoyment (PACES-8 scale) were assessed immediately after exercise.</p> Results <p>The 3 × 10–60&#xa0;s protocol resulted in significantly lower affective valence and enjoyment compared to the 8 × 3–120&#xa0;s protocol (p &lt; 0.05). Significant correlations were observed only in the 8 × 3–120&#xa0;s protocol. A negative correlation was found between RPE and both affective valence (r = – 0.65, p = 0.02) and enjoyment (r = – 0.52, p = 0.05), suggesting that higher RPE was associated with reduced pleasure. In addition, ΔStress Index and ΔRoot Mean Square of Successive Differences between normal heartbeats (ΔRMSSD) were correlated with psycho-affective variables.</p> Conclusion <p>RT protocols with higher perceived exertion negatively impact affective valence and enjoyment, regardless of equalized intensity and volume load. These findings highlight the importance of considering psycho-affective responses in RT prescription to enhance exercise adherence.</p>

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Assessment of affective valence and enjoyment across a single resistance training session with different protocols: association with heart rate variability metrics

  • 期刊论文

  • 发表日期：

    2026年1月5日

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  • Helyel Rodrigues Gobbo,
  • Lucas Cezar de Oliveira,
  • Gabriel Marcelino Barbosa,
  • Kelly Monteiro de Barros Vargas,
  • Gustavo Vieira de Oliveira

摘要

Purpose

Resistance training (RT) configurations can influence psycho-affective responses, potentially affecting exercise adherence. However, the impact of RT protocols with equalized volume load and intensity on affective valence and enjoyment remains unclear. This study aimed to investigate the effect of two RT protocols with distinct repetition schemes and rest intervals on psycho-affective responses in physically active individuals.

Methods

Twelve participants completed two RT sessions: (i) 3 × 10 with 60-s rest intervals and (ii) 8 × 3 with 120-s rest intervals. Both protocols maintained equalized relative intensity (85% of 10RM or 3RM) and volume load. Affective valence (feeling scale) was assessed pre-, during, and post-exercise. Heart rate variability (HRV) metrics were measured before and 30 min after exercise. The ratings of perceived exertion (RPE) and enjoyment (PACES-8 scale) were assessed immediately after exercise.

Results

The 3 × 10–60 s protocol resulted in significantly lower affective valence and enjoyment compared to the 8 × 3–120 s protocol (p < 0.05). Significant correlations were observed only in the 8 × 3–120 s protocol. A negative correlation was found between RPE and both affective valence (r = – 0.65, p = 0.02) and enjoyment (r = – 0.52, p = 0.05), suggesting that higher RPE was associated with reduced pleasure. In addition, ΔStress Index and ΔRoot Mean Square of Successive Differences between normal heartbeats (ΔRMSSD) were correlated with psycho-affective variables.

Conclusion

RT protocols with higher perceived exertion negatively impact affective valence and enjoyment, regardless of equalized intensity and volume load. These findings highlight the importance of considering psycho-affective responses in RT prescription to enhance exercise adherence.