Eleventh Grade, Human Biology & Health Science Projects (14 results)

"Flu season" is something we deal with every winter. Cyclical or seasonal outbreaks of an infectious disease can occur for a variety of reasons, such as seasonal changes in host behavior (for example, more people staying indoors), the seasonal abundance of disease carriers (for example, mosquitos), and many others. Another factor that can play a role in cyclical outbreaks occurs when the natural immunity to a disease has a short duration. This enables each individual in the population to… Read more

Have you ever noticed that your heart beats faster when you’re nervous before a big event? How and when does your heart rate slow down back to normal? In this science experiment, you will see if you can use different stress reduction techniques (meditation, yoga, breathing techniques) to determine which type works best for different kinds and intensities of stressors (physical or mental). You can also record other physiological measures, such as blood oxygen and blood pressure, to see how… Read more

The way humans walk—our gait—is usually fairly symmetrical. Each step we take with the left foot is similar in length and timing to the step with the right foot. This symmetry makes walking efficient and reduces stress on the muscles and joints. But what happens when the body is challenged by an uneven load, such as carrying groceries in one hand or holding a backpack on one shoulder? Biomechanics research shows that unequal weight distribution can disrupt gait symmetry, forcing one… Read more

​​Walking may seem simple, but it is actually a carefully coordinated process involving balance, rhythm, and efficiency. The way we walk—our gait—changes depending on speed. At slower speeds, people tend to take shorter, more careful steps. At faster speeds, stride length usually increases and step frequency (cadence) rises to keep up. Biomechanics researchers study these patterns to understand how speed influences gait mechanics and stability, since walking is one of the most… Read more