ABSTRACT
Core muscles play a fundamental role both in exercises and daily routines. Strong core muscles can enhance the Trunk stability and transition of strength. However, due to the weakness, most rookies can hardly feel the recruitment of core muscles and start compensating or using the wrong form. This may lead to cumulative fatigue in the short term and improper postures or spinal injuries in a long time. Thus, monitoring and protecting the unit for early core-muscle training is necessary. The study focuses on fitness rookies and designs an innovative waistband. High-density electromyography (HD-sEMG) can provide real-time monitoring of muscle conditions once it censors fatigue. The band will remind the user to take a break. And the shape memory polymer (SMP) can protect the waist and back from potential injury if necessary. With the continuous impact of the coronavirus, trainers spend more time at home and face the limitation of space and equipment. Nonetheless, isometric and simplified isotonic training will be enough for starters for core-muscle exercise. The study lists core-muscle strength exercises for athletes and core-muscle stability prescriptions for medical care, then reorganize them for rookies at home. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.