Effect of Reformer Spring Resistance Modifications on Core Muscle Activity During Basic Core Muscle Exercises.

Autor:	Kim HJ; Graduate School of Physical Education, Kyung Hee University, Yongin 17104, Republic of Korea., Sung JH; Graduate School of Physical Education, Kyung Hee University, Yongin 17104, Republic of Korea., Ryu JK; Graduate School of Physical Education, Kyung Hee University, Yongin 17104, Republic of Korea.; Department of Sports Coaching, College of Physical Education, Kyung Hee University, Yongin 17104, Republic of Korea., Jung HC; Graduate School of Physical Education, Kyung Hee University, Yongin 17104, Republic of Korea.; Department of Sports Coaching, College of Physical Education, Kyung Hee University, Yongin 17104, Republic of Korea., Wang J; Graduate School of Physical Education, Kyung Hee University, Yongin 17104, Republic of Korea.; Department of Sports Medicine, College of Physical Education, Kyung Hee University, Yongin 17104, Republic of Korea.
Jazyk:	angličtina
Zdroj:	Healthcare (Basel, Switzerland) [Healthcare (Basel)] 2024 Dec 05; Vol. 12 (23). Date of Electronic Publication: 2024 Dec 05.
DOI:	10.3390/healthcare12232447
Abstrakt:	Background: Core muscles serve as a central group within the functional kinetic chain, stabilizing the spine during movement. The Reformer is one of the most popular and primary pieces used in Pilates core exercises, requiring effective control of core muscles. The purpose of this study was to investigate the effect of Reformer spring resistance on core muscle activity. Method: 18 healthy adult females (age: 29.83 ± 4.22 years, body height: 164.98 ± 4.14 cm, body mass: 53.67 ± 5.32 kg) participated in this study. Surface electromyography was recorded from six muscles: rectus abdominis, internal oblique, erector spinae, multifidus, rectus femoris, and biceps femoris during core exercises. Participants performed three core exercises (hip roll, knee-off, and elephant) under three different Reformer spring conditions (fixed platform, platform connected to springs with moderate resistance, platform connected to springs with low resistance). Results: During the hip roll exercise, mean muscle activity of the rectus abdominis, erector spinae, multifidus, and biceps femoris was significantly increased on the low-resistance spring platform compared to the moderate-resistance platform and fixed platform conditions ( p < 0.001). During the knee-off exercise, mean muscle activity of the rectus abdominis, internal oblique, erector spinae, and multifidus significantly increased on the low-resistance platform compared to the fixed platform ( p < 0.001). Furthermore, during the elephant exercise, mean muscle activity of the rectus abdominis, internal oblique, and rectus femoris significantly increased on the low-resistance spring platform compared to the fixed platform ( p < 0.001). Conclusions: These findings suggest the unstable platform caused by the Reformer spring modification impacts core muscle activity during basic core exercises. Therefore, when designing core exercise programs using the Reformer, platform instability should be considered a key factor for rehabilitation and core stability.
Databáze:	MEDLINE
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