Especially, LBP I-Zer exercise type showed more effectiveness in reducing pain degree and enhancing muscle activity. Therefore, LBP patients performed isometric exercise may have positive effect to reduce pain degree and to increase muscle activity. LBP I-Zer exercise group and LBP mat exercise group showed increased mean frequency in LT, IL, M, and RA muscles than the LBP control group.

The present results showed that muscle activity in the LBP I-Zer exercise group was increased compared to the LBP mat exercise group and LBP control group ( P<0.05). The two-way ANOVA with repeated measure was used to check the pain degree and muscle activity. LBP mat exercise program and LBP I-Zer exercise program were conducted 5 sets once time, 3 times per week during 6 weeks. Root mean square (RMS), median frequency (MDF), and mean frequency (MNF) were checked by EMG power spectrum analysis on longissimus thoracic (LT), iliocostalis lumborum (IL), mulitifidus (M), and rectus abdominis (RA). Visual analogue scale (VAS) and electromyography (EMG) were used to evaluate the degree of pain and the muscle activity in LBP patients. Subjects were divided into 3 groups: LBP control group, LBP mat exercise group, and LBP I-Zer exercise group in 23–25 aged men.

Isometric exercise types were mat exercise and I-Zer exercise. The purpose of the present study is to evaluate the effects of isometric exercise types on low back pain (LBP) patients.

Do isometric exercises