idemudia_nkem_Lab4

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University of Illinois, Urbana Champaign *

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150

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Aerospace Engineering

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Dec 6, 2023

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docx

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Nkem Idemudia Andy Askow Lab # 4 9 October 2020 Definitions: Isokinetic contraction: Isotonic contraction where rate of change in length is constant Margaria-Kalamen Stair Climb Test: A field task intended to measure an athlete's lower body power by running up stairs Immediate energy system: The system that the body uses to generate explosive energy Short-term energy system: The system that provides more energy to fuel muscle. Purpose: The purpose of this lab is to learn how to use the Wingate test for determining maximal anaerobic power and the difference between man and peak power. Results : Table 2. Data collected from the Wingate Anaerobic Test (WAnT). Age Height Weight Peak Power Average Power Power Drop (years) (cm) (kg) (W) (W/kg) (W) (W/kg) (W/s) Female 24 167.6 64.4 602.1 9.3 483.0 7.5 9.6 Male 25 180.3 82.8 916.5 11.1 726.0 8.8 15.3 Table 5. Subject Data for Margaria-Kalamen Test. Trial Time (s) between 3 rd & 9 th step 1 0.51 2 0.45 3 0.42 Table 1. Peak torque data from isokinetic strength testing. Angular Velocity ( o /sec) Extension (lb . ft) Flexion (lb . ft) 60 300 250 180 140 120 300 85 70
Vertical Distance (m) 1.143 m Body Weight (kg) 73.2 Vertical Jump Calculations: Trial 1: 13.5 x 0.0254 = 0.3429 Trial 2: 14.5 x 0.0254 = 0.3683 Trial 3: 15.5 x 0.0254 = 0.3937 Best Score: 15.5 x 0.0254 = 0.3937 Margaria-Kalamen Results: Trial 1: Average Trial 2: Average Trial 3: Good Discussion Questions : 1. Describe the relationship between peak torque and velocity (e.g. Margaria-Kalamen Power Calculations (Body mass x Gravitational constant x Displacement / Time): Trial 1: (73.2kg x 9.81m/s^2 x 1.143m) / 0.51s = 1609.37W Trial 2: (73.2kg x 9.81m/s^2 x 1.143m) / 0.45s = 1823.95W Trial 3: (73.2kg x 9.81m/s^2 x 1.143m) / 0.42s = 1954.24W Vertical Jump Power Calculations (2.21359 x Body mass (kg) x √ (CMVJ Height) (m) x 9.8): Trial 1: (2.21359 x 59.3kg x ( √ 0.3429m)) x 9.8 = 753.29W Trial 2: (2.21359 x 59.3kg x ( √ 0.3683m)) x 9.8 = 779.37W Trial 3 & Best Score: (2.21359 x 59.3kg x ( √ 0.3937m)) x 9.8 = 807.16W Table 4. Subject Data for Vertical Jump. Trial Vertical Jump (inches) Convert to meters (x 0.0254) 1 13.5 0.3429 2 14.5 0.3683 3 15.5 0.3937 Best score (m) 15.5 0.3937 Body Weight (kg) 59.3 60 180 300 Angula r Velocity (o/sec) 0 50 100 150 200 250 300 350 Angular Velocity for Extension vs Flexion Extension Flexion Angular Velocity (o/sec) Peak Torque (Ib x f)
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