Quantitative Analysis of Core Muscle Strengthening, Body Composition Changes, and Metabolism After High-Energy
Pei-Han Liu1,2, Pei-Hsuan Liu2, Chang-Cheng Chang3,4
1Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan.
Introduction:
This study evaluated the impact of high-energy magnetism inductive therapy (HEIT) on body composition, muscle endurance, and metabolic biomarkers in healthy adults.
Methods:
This open-label prospective study enrolled 27 participants, who were stratified by body fat percentage. Each participant received eight 40 minute HEIT sessions over 4 weeks. Assessments included body composition measurements, ultrasonography, McGill endurance tests, and blood biomarker level examination.
Result:
The participants exhibited significant reductions in body fat percentage (-2.55% ± 6.66%; p=0.041) and increases in muscle mass ratio (0.83% ± 2.21%; p=0.028). The core endurance improved significantly across all McGill endurance tests, which included an increase in squat performance from 36.89 ± 8.40 to 42.67 ± 9.61 (p < 0.001). At the end of the trial, both the low (from 1.27 ± 1.97 ng/mL to 10.12 ± 9.59 ng/mL; p=0.039) and high body fat groups (from 0.42 ± 0.62 ng/mL to 3.94 ± 4.12 ng/mL; p=0.018) showed increases in growth hormone (GH) levels. Triglyceride (TG) levels showed a nonsignificant downward trend (p=0.184), while testosterone remained stable. Ultrasound assessments showed an increasing trend in the rectus abdominis muscle area, from 16.00 ± 5.42% to 16.73 ± 4.30% (p=0.166), alongside a significant reduction in subcutaneous fat area (p=0.010). Transient muscle soreness was the most common side effect (29.6%). No serious adverse events were reported.
Conclusion:
HEIT effectively improved body composition, muscular performance, and metabolic biomarkers (e.g., GH and TG levels) across all groups. Notably, core endurance measured by McGill tests significantly improved in all groups, with particularly pronounced gains in the high body fat percentage group. Overall, the high body fat percentage group demonstrated the most pronounced response to HEIT. Future studies with larger cohorts, longer interventions, and controlled designs are needed to validate HEIT's long-term efficacy.
Level Of Evidence Iii:
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