Title

The Effect of Force and Time on Chicken Tibias

Author(s)

Abby Thorsland

School Name

Hamilton Career Center

Grade Level

11th Grade

Presentation Topic

Physiology and Health

Presentation Type

Non-Mentored

Abstract

The purpose of this study was to determine which variable(s) affect the frequency of running related leg (specifically tibia) fractures and breaks by experimenting on chicken tibias with different levels of force for different amounts of time. By repetitively striking a chicken tibia on a force plate to emulate the running impact, this study will record when cracks or breaks occur. A Fatigue Testing Machine, or a homemade device designed to repetitively strike an object on a surface, in this case, a force plate, was used to stress each tibia. After testing, X-ray imaging was used to capture fractures and/or breaks in the chicken tibias. Results show an increasing number of cracks with increasing force and time. An increase of 132.8 grams of force yields an average of 1 additional crack in the bone and increases the largest crack by an average of 5 mm. An increase of 9 minutes exerted on the bone yields an average of 1.5 additional cracks and increases the largest crack by an average of 11.5 mm. Statistical analysis #1 compares bones exerted for an equal amount of time with differing forces. Results are not statistically significant. Statistical analysis #2 compares bones with an equal amount of additional force applied for differing amounts of time. Results are statistically significant. This means amount of time exerted on the tibial bone is more likely the cause for cracks or stress fractures.

Start Date

3-28-2020 10:00 AM

Presentation Format

Written Only

Group Project

No

COinS
 
Mar 28th, 10:00 AM

The Effect of Force and Time on Chicken Tibias

The purpose of this study was to determine which variable(s) affect the frequency of running related leg (specifically tibia) fractures and breaks by experimenting on chicken tibias with different levels of force for different amounts of time. By repetitively striking a chicken tibia on a force plate to emulate the running impact, this study will record when cracks or breaks occur. A Fatigue Testing Machine, or a homemade device designed to repetitively strike an object on a surface, in this case, a force plate, was used to stress each tibia. After testing, X-ray imaging was used to capture fractures and/or breaks in the chicken tibias. Results show an increasing number of cracks with increasing force and time. An increase of 132.8 grams of force yields an average of 1 additional crack in the bone and increases the largest crack by an average of 5 mm. An increase of 9 minutes exerted on the bone yields an average of 1.5 additional cracks and increases the largest crack by an average of 11.5 mm. Statistical analysis #1 compares bones exerted for an equal amount of time with differing forces. Results are not statistically significant. Statistical analysis #2 compares bones with an equal amount of additional force applied for differing amounts of time. Results are statistically significant. This means amount of time exerted on the tibial bone is more likely the cause for cracks or stress fractures.