Aquatic Weight Training Device with Water-Filled Eccentric Resistance
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Solution Overview
Problem
Current weight training devices fail to provide effective resistance, especially for eccentric training, in aquatic environments due to the lack of resistance when lifted out of the water and the inability to perform eccentric movements underwater, limiting the benefits for injured and elderly individuals.
Innovation Solution
A weight training device comprising hollow bars and end weights with adjustable water-filled compartments that allow for both concentric and eccentric training by controlling the amount of water inside the weights, enabling resistance adjustment during exercises.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a foam rubber weight device is used in water, then the device provides support and reduces injury risk, but the device provides no resistance when lifted out of the water
Solution Approach 1:
The weight device incorporates a water-filled chamber that dynamically adjusts resistance based on the device's position. When lifted out of water, the chamber remains filled providing maximum resistance; when submerged, water can enter or leave the chamber to maintain appropriate resistance levels, enabling continuous force application throughout the exercise range.
Solution Approach 2:
The device utilizes hydraulic principles by employing a water-filled chamber with controlled water flow. The water acts as a dynamic weight that can be added or removed from the chamber based on the device's immersion status, providing consistent resistance force whether the device is in air or water.
2Object-affected harmful factors
If water is used as the training environment, then support and injury reduction are provided, but eccentric training cannot be performed as water negates gravity
Solution Approach 1:
The device employs a water-filled chamber that acts as a counterweight system. The chamber is positioned and sized to provide sufficient weight to overcome water buoyancy forces during the eccentric (lowering) phase of exercises, enabling controlled resistance movements that would otherwise be impossible in water.
Solution Approach 2:
The resistance mechanism dynamically adapts to the training phase. During concentric (lifting) movements, the fixed weight provides resistance; during eccentric (lowering) movements, the water-filled chamber maintains full weight to provide resistance against muscle lengthening, enabling complete eccentric training capability in water.
3Device complexity
If fixed weight is used, then simple structure is maintained, but user control over resistance adjustment is limited
Solution Approach 1:
The device transitions from fixed weight to dynamic weight adjustment through a water-filled chamber. The chamber volume can be varied by controlling water input/output, allowing users to adjust resistance levels to match their strength and training needs while maintaining a relatively simple overall device structure.
Solution Approach 2:
The resistance parameter is made adjustable by changing the volume of water in the chamber. Users can control the amount of water added or removed to precisely tune the weight resistance, providing flexibility without requiring complex mechanical adjustment mechanisms.
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
Enables effective weight training, including eccentric training, in aquatic environments by providing adjustable resistance, enhancing user control and allowing for longer repetitions before muscle exhaustion, thus benefiting injured and elderly users.
Implementation Method 1
water provides support to individuals while they exercise, helps with back problems, reduces the possibility of injury
Implementation Method 2
eccentric training is resistance to gravity, such as when the lowering of the dumbbell is resisted
Data Source
AI summary
The invention presented is an aquatic weight training device that enables weight training in an aquatic environment while allowing eccentric weight training. The inventive device includes at least one hollow bar with hollow weights attached at each end. The end weights each include a plurality of holes that allow a user to fill the end weights under water then controllably empty the end weights while exercising. The end weights may be fixedly or releasably attached to the bar.