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Purpose <p>We evaluated whether different shoulder flexion angles during prone-bridge exercise (PBE) promote differential electromyographic activity (EMG) and rating of perceived exertion (RPE) responses.</p> Methods <p>Fourteen nationally competitive Brazilian young men of sprint, middle-distance, and endurance were recruited. We assessed the maximum voluntary isometric contraction (MVIC) of the rectus abdominis (RA), external oblique (EO), lumbar spinal erectors (LSE), and latissimus dorsi (LD) muscles. Seventy-two hours later, subjects performed the protocol (four sets; 60&#xa0;s length of PBE; 60&#xa0;s of rest between sets) with EMG amplitudes obtained for each muscle. PBE was performed randomly either at 90° or 110° of shoulder flexion with 48&#xa0;h separating trials. We assessed participants’ RPE at the end of each set.</p> Results <p>The shoulder angle from 90 to 110° substantially increased the activation of the RA and OE muscles as well as the RPE. However, LSE and LD muscles demonstrated low levels of activation in both conditions. The increase in the PBE angle from 90 to 110° substantially increases muscle activation of the RA and EO muscles as well as the RPE over performance of four sets. Also, there is an increase in the activation of the RA and EO muscles within each angle across the four sets.</p> Conclusion <p>The PBE at 110° promotes greater activation of the RA and OE muscles as well as the RPE.</p>

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Influence of shoulder angle on trunk muscle activation and perceived effort during prone-bridge exercise

  • 期刊论文

  • 发表日期：

    2025年10月3日

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  • Miller P. Guimarães,
  • Rafael C. Teodoro,
  • Leandro R. di Moraes,
  • Yuri A. C. Campos,
  • Sandro F. da Silva,
  • Paulo H. S. M. de Azevedo

摘要

Purpose

We evaluated whether different shoulder flexion angles during prone-bridge exercise (PBE) promote differential electromyographic activity (EMG) and rating of perceived exertion (RPE) responses.

Methods

Fourteen nationally competitive Brazilian young men of sprint, middle-distance, and endurance were recruited. We assessed the maximum voluntary isometric contraction (MVIC) of the rectus abdominis (RA), external oblique (EO), lumbar spinal erectors (LSE), and latissimus dorsi (LD) muscles. Seventy-two hours later, subjects performed the protocol (four sets; 60 s length of PBE; 60 s of rest between sets) with EMG amplitudes obtained for each muscle. PBE was performed randomly either at 90° or 110° of shoulder flexion with 48 h separating trials. We assessed participants’ RPE at the end of each set.

Results

The shoulder angle from 90 to 110° substantially increased the activation of the RA and OE muscles as well as the RPE. However, LSE and LD muscles demonstrated low levels of activation in both conditions. The increase in the PBE angle from 90 to 110° substantially increases muscle activation of the RA and EO muscles as well as the RPE over performance of four sets. Also, there is an increase in the activation of the RA and EO muscles within each angle across the four sets.

Conclusion

The PBE at 110° promotes greater activation of the RA and OE muscles as well as the RPE.