Lumbar Exercise Machine Multifidus Muscle Isolation
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Solution Overview
Problem
There is a need for a portable exercise device that effectively exercises, stretches, and strengthens the multifidus muscle to prevent, reduce, and cure back pain, as weak multifidus muscles are commonly associated with back pain and account for eighty percent of back pain cases.
Innovation Solution
The exercise machine features an adjustable footrest that supports the feet in a position that forces the lower back against a stationary pad, isolating the multifidus muscle from larger muscle groups. The machine also includes an adjustable handle for isometric exercises, allowing users to statically contract the multifidus muscle against resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a portable exercise device is designed to target the multifidus muscle, then the effectiveness of exercising this specific muscle is improved, but the device complexity increases to isolate this muscle from larger muscle groups
Solution Approach 1:
The exercise device is divided into distinct functional segments: a seat portion, a backrest portion with stationary pad, and a footrest portion with independent movement capability. This segmentation allows the footrest to move independently to apply specific forces while the backrest provides stable support, thereby isolating the multifidus muscle without requiring complex overall device structure
Solution Approach 2:
The invention extracts and isolates the specific function of multifidus muscle engagement from general back exercise functions. By designing the footrest to move independently and the stationary pad to remain fixed, the device separates the multifidus targeting function from other back muscle engagement, achieving muscle isolation through functional extraction rather than complex mechanisms
2Reliability
If the footrest is made movable to isolate the multifidus muscle, then the muscle isolation effectiveness is improved, but the stability of the exercise position may deteriorate
Solution Approach 1:
Different parts of the device have different mobility characteristics: the footrest portion is designed to be movable to provide dynamic stimulation to the multifidus muscle, while the backrest and stationary pad are designed to be fixed to provide stable support. This local differentiation of quality (movable vs. fixed) allows muscle isolation without compromising overall exercise position stability
Solution Approach 2:
The stationary pad acts as an intermediary element between the user's back and the fixed backrest structure. It provides a stable contact point that mediates the forces generated by the moving footrest, ensuring that the dynamic footrest movement translates effectively to multifidus engagement while the back remains stabilized against the fixed backrest
Data Source
AI summary
A portable exercise machine useable for isometric exercise and conditioning of the multifidus muscle has a seat with an adjustable upwardly inclined arm member and an adjustable downwardly inclined leg member. A handle connected to the arm member is adapted to be gripped by the user to perform static muscle contraction and stretching. A foot rest connected to the leg member allows the user's heels to rotate downwardly forcing the pelvis to lock and isolate the multifidus muscle for stretching and strengthening.