Device Requirements
Before design prototyping, we developed a list of customer needs and wants to incorporate into our design. Along with each need and want is a metric with a goal to evaluate how successful our design is at meeting these requirements. These goals directed many of the design selections in our current prototype.
Customer Needs
| Customer Need | Metric | Goal |
|---|---|---|
| Activates Posterior Chain and Hip Muscles | % of Maximum Voluntary Isometric Contraction (MVIC) | 20-30% of MVIC (moderate activation) |
| Portable | Size of device (ft3) Weight (lb) Need for Power/Electricity | Under 1.6 ft3 Under 15 lbs No Power Needed |
| Affordable | Price ($) | Under $100 |
| Accesible | Variability of Sizes Variability of Resistance | 5 Sizes (XS, S, M, L, XL) 3 Levels (Beginner, Intermediate, Advanced) |
| Durable | Years Lasting | Device does not break after normal wear and tear of 5 years |
Customer Wants
| Customer Wants | Metric | Goal |
|---|---|---|
| Variability | Number of Exercises | More than 5 exercises |
| Easy Assembly and Disassembly | Time (s) | Under 1 minute |
| Cleanable | % Bacteria removed standard cleansing wipe | Over 90% bacteria reduction |
Our Design
CAD Prototype
Physical Prototype
Device Components
| Component | Description and function |
|---|---|
| Adjustable Bar | Tension bar with 5 adjustable heights levels (6, 9, 12, 15, 18 inches) to facilitate body-weight resistance based exercises for various size users. |
| Resistance Bands | 4 latex resistance bands with lengths of 4.4ft and pull resistance of 10lbs, 20lbs, 30lbs & 40lbs. Equipped with a carabiner clip at both ends for attachment. |
| Padded TPE Surface | Padded surface of the board protects user from the forces applied toward body during exercise. Closed-cell technology prevents absorption of sweat to make device easy to clean with standard cleansing wipe. TPE material exhibits high coefficient of friction with skin to minimize slipping during exercise. |
| Rubber Spacing Backing | Rubber spacer backing prevents device from slipping across various common floor surface, and provides protection from floor damage from device. |
| Resistance Band Attachment Points | Two locations for resistance band attachment points allows for various resistance based exercises while not overwhelming users with attachment points. |
Device In Use
Our device facilitates a number of various exercises strengthen and activate lower posterior chain and hip muscles. While some of these exercises are commonly used in knee pain rehabilitation protocols, others are used commonly in strength training programs.
Glute-Ham Raise
Activated Muscles: Hamstrings, Glutes, Lower Back
Banded Pull Through
Activated Muscles: Hamstrings, Glutes, Lower Back
Lateral Hip Abduction
Activated Muscles: Hip Abductors
Elevated Glute Bridge
Activated Muscles: Glutes, Hamstrings, Lower Back
Resisted Calf Flexion
Activated Muscles: Calves
Lateral Hip Adduction
Activate Muscles: Hip Adductor
Bulgarian Split Squat
Muscles Activated: Hamstrings, Glutes, Calves
Banded Glute Bridge
Muscles Activated: Glutes, Hamstrings, Lower Back
Banded Kickback
Muscles Activated: Glutes, Hamstrings