Bi-directional Resistance Exercise Device with Eddy Current Braking
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Solution Overview
Problem
Current exercise machines limit the range of motion to one set of limbs, restricting high-intensity interval training and failing to engage multiple muscle groups simultaneously, which is essential for effective cardio-respiratory exercise and muscle development.
Innovation Solution
An exercise apparatus with bi-directional resistance elements allowing near-complete joint range of motion in elbows, shoulders, knees, and hips, utilizing eddy current braking for frictionless resistance that adjusts with user speed, enabling synchronized movement of arms and legs in a gait-like pattern without weight-bearing stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If exercise machines are designed to provide resistance, then muscle strength and endurance are improved, but the range of motion is limited to one set of limbs
Solution Approach 1:
The exercise machine is divided into separate resistance elements for different limb groups (arms and legs), each capable of independent movement and resistance application. This segmentation allows each limb group to move through full range of motion while receiving appropriate resistance, resolving the contradiction between strength training and range of motion.
Solution Approach 2:
The machine is designed to simultaneously exercise multiple limb groups (arms and legs) with full range of motion capability. The universal design allows users to perform synchronized movements across different body parts, enabling comprehensive muscle engagement without limiting any single limb's range of motion.
2Device complexity
If exercise machines limit range of motion to one set of limbs, then device complexity is reduced, but high-intensity interval training effectiveness is compromised
Solution Approach 1:
The machine merges multiple resistance elements and movement capabilities into a single integrated system that can simultaneously exercise arms and legs. This combination enables high-intensity interval training by engaging multiple muscle groups at once, achieving both comprehensive training effectiveness and manageable device complexity through unified design.
Solution Approach 2:
The machine incorporates dynamic resistance elements that can adjust and synchronize movements across different limb groups. The dynamic capability allows the system to adapt to user movements in real-time, providing appropriate resistance while maintaining full range of motion, thus supporting high-intensity training without excessive complexity.
3Reliability
If exercise machines require seated position, then safety is improved, but range of motion and muscle engagement are limited
Solution Approach 1:
The machine allows users to assume various positions (seated, lying down, or standing) while maintaining safety through controlled resistance elements. The dynamic positioning capability enables full range of motion in arms and legs regardless of user posture, resolving the contradiction between safety and range of motion by making the machine adaptable to different user needs.
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
This design allows for a full-body, high-intensity workout that quickly reaches cardio-respiratory fatigue, enhancing muscle activation, mitochondrial function, and metabolic efficiency, while minimizing the risk of injury and maintaining muscle efficiency over time.
Implementation Method 1
utilizing eddy current braking for frictionless resistance that adjusts with user speed
Data Source
AI summary
An exercise apparatus having a frame with attachments to multiple independent bidirectional resistance devices used by arms and/or legs of a user to provide resistance against movement of the user's appendages in two substantially opposed directions. The resistance devices may have a mechanism to control bi-directional resistance. The movement of the user's appendages in bi-directional resistance offers near full body exercise of agonist/antagonist muscles using flexion and extension action of larger muscle groups in a gait pattern, simultaneously. Hand engaging members attach to arm resistance devices and foot engaging members attach to leg resistance devices. The exercise apparatus may include an attached inclined backboard, mat, bench, or cushion to fully or partially support the user. The exercise apparatus may have separate height and/or length adjustment mechanisms for adjusting a range of motion of the user's appendages.