Pendulum Resistance Core Exercise for Low-Load Rehabilitation
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Solution Overview
Problem
Current exercise apparatuses are ineffective in training the pelvis, waist, and abdominal regions of the human body, particularly for women and the elderly, due to high initial force requirements and lack of suitable methods for strengthening and rehabilitation, leading to chronic and inveterate regressive diseases.
Innovation Solution
A strengthening and rehabilitation exercise apparatus utilizing a pendulum motion and gravity principle, with a four-axis link mechanism and electromagnetic brake, to minimize initial exercise load and induce strong weight resistance, allowing for effective training of the pelvis, waist, and abdominal regions while reducing exercise burden.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conventional exercise apparatuses are used, then exercise resistance can be provided, but initial exercise load is too high for women and elderly people
Solution Approach 1:
The exercise apparatus uses a pendulum mechanism that dynamically adjusts the exercise load based on the user's movement. The initial phase of movement utilizes the pendulum's natural swing to minimize starting resistance, while the resistance increases as the movement progresses, providing adaptive force that matches the user's capability rather than requiring high initial strength
Solution Approach 2:
The apparatus changes the resistance parameter throughout the exercise cycle. By utilizing gravitational force and pendulum motion, the resistance is low at the beginning of each swing and progressively increases, transforming the exercise from requiring high initial force to providing progressive resistance that accommodates users with limited strength
2Productivity
If conventional exercise methods are used, then some muscle groups can be trained, but pelvis, waist, and abdominal regions are not effectively trained
Solution Approach 1:
The exercise apparatus is designed to simultaneously train multiple muscle groups including pelvis, waist, abdominal region, back, and shoulders through a single integrated movement. The pendulum mechanism and body positioning enable coordinated engagement of core muscles and upper body, providing multi-functional training that addresses the limitations of conventional single-focus exercise equipment
Solution Approach 2:
The apparatus segments the exercise into distinct phases and muscle group engagements. The movement pattern is divided to specifically target different regions: pelvis and waist during the swinging phase, abdominal region for stabilization, and shoulders for upper body engagement, ensuring comprehensive training coverage through structured segmentation of the exercise motion
3Force
If high exercise resistance is applied, then training effectiveness increases, but exercise repetitions and burden increase
Solution Approach 1:
The apparatus employs periodic pendulum swings that naturally cycle through low-resistance and high-resistance phases. Each swing provides intermittent bursts of strong resistance during the critical exercise portions, while the return swing allows recovery with minimal resistance. This periodic pattern delivers high training effectiveness in fewer repetitions compared to continuous high-resistance exercise
Solution Approach 2:
The pendulum mechanism maintains continuous motion through the exercise cycle, ensuring that the useful resistance training action occurs throughout each swing rather than being interrupted. The gravitational force and momentum keep the system in constant motion, maximizing the time under tension during each repetition and reducing the total number of repetitions needed for effective training
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus enables efficient and safe exercise of the pelvis, waist, and abdominal muscles, reducing the number of exercise repetitions and burden, and providing a stable exercise base for maximal resistance, thus addressing the limitations of existing methods.
Implementation Method 1
electromagnetic brake
Implementation Method 2
utilizing a pendulum motion and gravity principle
Implementation Method 3
utilizing a pendulum motion and gravity principle
Data Source
Figure 1~3
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AI summary
A strengthening and rehabilitation exercise apparatus includes a hip joint strengthening and rehabilitation exercise apparatus for strengthening a pelvis, an abdominal region, and a waist through exercise of a lower body symmetrically interlocking with a weight while fixing an upper body in a prone position, a hip joint strengthening and rehabilitation exercise apparatus for strengthening the pelvis, the abdominal region, and the waist through exercise of the upper body interlocking with the weight while fixing the lower body in a sitting position, a waist joint strengthening and rehabilitation exercise apparatus for strengthening the waist and the abdominal region through exercise of the upper body interlocking with the weight while fixing legs and the pelvis in a straight line in a supine position, and a stretching apparatus for performing muscle exercise of a back and shoulders using hands and arms in the sitting position.