Adjustable Biomechanical Model for Squat Mechanics Analysis
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Solution Overview
Problem
Current biomechanical models fail to effectively demonstrate the combined influences of skeletal proportions, joint limitations, and external loading on human movement during exercises like squats and daily activities, limiting the understanding and improvement of exercise mechanics.
Innovation Solution
A biomechanical model system comprising adjustable torso, upper leg, and lower leg segments connected by multiaxial and single-axis joints, with a pedestal for varying positions and load placement, allowing manipulation of segmental proportions and joint mobility to simulate human movement and external influences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If biomechanical models use fixed skeletal proportions and joint limitations, then the model structure is simple, but the model cannot demonstrate variations in individual mechanical ability and segmental proportions
Solution Approach 1:
The biomechanical model is divided into separate adjustable segments (torso, upper leg, lower leg) that can be independently modified. Each segment can be adjusted for length and connected through articulated joints, allowing the model to represent different skeletal proportions while maintaining structural simplicity through modular design.
Solution Approach 2:
The model incorporates dynamic adjustment capabilities where segment lengths and joint mobilities can be changed to reflect individual variations. The multiaxial hip joint and single-axis knee and ankle joints allow dynamic manipulation of movement ranges, enabling the model to adapt to different mechanical scenarios without requiring a completely different structure for each case.
2Measurement precision
If the model includes multiple adjustable variables for segmental proportions and joint mobility, then the demonstration capability improves, but the manipulation complexity increases
Solution Approach 1:
By segmenting the model into distinct adjustable components (torso length, upper leg length, lower leg length, hip joint mobility, knee joint mobility, ankle joint mobility), each variable can be manipulated independently and precisely. This segmentation allows for systematic adjustment of multiple variables while maintaining ease of operation through localized control of each segment.
Solution Approach 2:
The model serves multiple functions by combining segmental proportion adjustment with joint mobility manipulation and external load application. This multi-functionality allows a single model to demonstrate various biomechanical scenarios without requiring separate models for each variable, simplifying operation while maintaining precision.
3Adaptability or versatility
If the model demonstrates external influences like load placement and foot positioning, then the comprehensiveness of exercise mechanics demonstration improves, but the device complexity increases
Solution Approach 1:
External loads are applied through intermediary elements such as weight plates and positioning devices that interface with the model's segments. These intermediaries allow for the demonstration of external influences without requiring complex integrated systems, as the loads can be independently positioned and adjusted on the model's segments.
Solution Approach 2:
The model's segments and joints serve multiple functions by simultaneously supporting anatomical representation and external load application. The same hip, knee, and ankle joints that demonstrate natural movement also support external loads, eliminating the need for separate mechanisms and reducing overall device complexity while maintaining comprehensiveness.
Data Source
AI summary
A biomechanical system for illustrating body mechanics. The system includes components representing the torso, upper leg, and lower leg which can be altered in length to represent the variations in human segmental proportions and their combined influences on an individual's mechanical ability to move between a standing position and a seated or squatting position. Manipulation of these variables is further influenced by a range of available mobility of respective joints interconnecting the body segments. Outcomes of permutations of both the variations in segmental proportions and joint mobility is further influenced by variations in the relative plane of gross lower extremity motion as demonstrated by manipulation of a secondary hip axis. The system also incorporates various muscle segments to demonstrate impact of body movements on muscles and restrictions that muscles may present for body movements.