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The Nordic hamstring exercise (NHE) is particularly effective in an enhancing performance and reducing the risk of hamstring injuries. Therefore, we examine and compare the changes in heel contact force and muscle activation between different variations of dynamic and static break points in collegiate soccer players. Twelve healthy collegiate soccer players (mean ± SD age 20.15 ± 1.1 yrs, height 171.8 ± 4.9 cm, and body mass 66.1 ± 6.1 kg) who had not experienced hamstring strain injuries participated in the study. A one-way repeated measures ANOVA was conducted to determine whether there was a statistically significant difference in heel contact force and electromyographic activity in difference variations of dynamic and static break points (40°, 50° and 60°). The NHE at the isometric 40° breaking point resulted in significantly higher peak force variables in both the dominant (p < 0.001; η2 = 0.39) and non-dominant lower limbs (p < 0.001; η2 = 0.27), as well as increased iEMG activity in the biceps femoris long head (p < 0.001; η2 = 0.22), and semitendinosus (p < 0.001; η2 = 0.71) were statistically significant higher than the other static break points angle and dynamic free fall. The static NHE offers several advantages, particularly in terms of hamstring strength, enhance muscular endurance which is beneficial for activities requiring sustained hamstring activation.

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Comparative Analysis of Heel Contact Force and Electromyographic Activity Among Different Nordic Hamstring Exercises

  • 会议论文

  • 发表日期：

    2026年

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  • Tibeth Sukantameth,
  • Jutharat Promson,
  • Nawarat janpolsaen,
  • Prisana phonhan,
  • Sirinya Audonphon,
  • Radomyos Matjiur,
  • Siwakorn Akkaneekool,
  • Rodrigo Zacca,
  • Phornpot Chainok

摘要

The Nordic hamstring exercise (NHE) is particularly effective in an enhancing performance and reducing the risk of hamstring injuries. Therefore, we examine and compare the changes in heel contact force and muscle activation between different variations of dynamic and static break points in collegiate soccer players. Twelve healthy collegiate soccer players (mean ± SD age 20.15 ± 1.1 yrs, height 171.8 ± 4.9 cm, and body mass 66.1 ± 6.1 kg) who had not experienced hamstring strain injuries participated in the study. A one-way repeated measures ANOVA was conducted to determine whether there was a statistically significant difference in heel contact force and electromyographic activity in difference variations of dynamic and static break points (40°, 50° and 60°). The NHE at the isometric 40° breaking point resulted in significantly higher peak force variables in both the dominant (p < 0.001; η2 = 0.39) and non-dominant lower limbs (p < 0.001; η2 = 0.27), as well as increased iEMG activity in the biceps femoris long head (p < 0.001; η2 = 0.22), and semitendinosus (p < 0.001; η2 = 0.71) were statistically significant higher than the other static break points angle and dynamic free fall. The static NHE offers several advantages, particularly in terms of hamstring strength, enhance muscular endurance which is beneficial for activities requiring sustained hamstring activation.