Solution 3.3 Change in Stride Length & Stride Rate with running velocity1- Aim of exterminateTo understand how Stride Rate (SR) and Stride Length (SL) change over different speeds oflocomotion2- Introduction:Stride length and stride rate are among the most commonly studied linear kinematic parameters.The distance covered by one stride is the stride length. A stride is defining as the time between twoconsecutive specific discrete events as shown in Fig. 1 and the number of strides per minute is thestride rate (frequency). Running and walking velocity is the result of the relationship between striderate and stride length. That is:Running Speed = Stride Length * Stride rateStep length4.5-4.03.5-Fig.1. Stride Parameters during gait.Many studies have shown that in running, both stride rate and stride length increase with increasingvelocity, but the adjustment is not proportional at higher velocities as shown in fig.2. for velocitiesup to 7 m/s, increases are linear, but at higher speeds, there is a smaller increment in stride lengthand a greater increment in stride rate. This indicates that when sprinting, runners increase theirvelocity by increasing their stride rate more than their stride length. A runner initially increasesvelocity by increasing stride length. However, there is a physical limit to how much an individual canincrease stride length. To run faster, Therefore, the runner must increase his or her stride rate.3.02.5SR(H₂)Gait cycleStride lengthStep length3- Experimental Procedure:Stride lengthStride rate1Step orbase width44Running velocity (m/s)10SL(m)2.01.S1.0Fig. 2. Changes in stride length (SL) and Stride Rate (SR) as a function of running velocity. 3.2. Part B1- Prepare stopwatch and a treadmill keeping in mind attaching the magnetic safety piece to therunner2- The person running will select a comfortable running speed3- once the speed is selected, the person measuring will time how long it takes to complete 20right foot strikes. Be sure to count the very first foot strike as '0' as the timer starts and thenstop the timer when you count to '20' foot strikes.4-record the running speed5- Repeat for at least four different running speeds3.2.1 Calculations:1- Calculate SF by dividing 20 by the time to complete the 20 strides2- Calculate SL by dividing running speed by SF3- plot velocity vs. SF and velocity vs. SL.TrailTreadmillTreadmillSpeed (Km/hr) Speed (m/s)Table 2Time tocomplete 20strides (s)StrideFrequency (Hz)Stride Length(m)3.3 Discussion1- What are the factors that affect running speed for healthy persons?2- Discuss the difference between the results obtained from part (a) and part (b).3-Based on your intuition, make a hypothesis for how increased speed is achieved in running.

The provided solution seem to be appropriate to solve the concern raised. However this can better…

Change in Stride Length & Stride Rate with running velocity 1- Aim of exterminate To understand how Stride Rate (SR) and Stride Length (SL) change over different speeds of locomotion 2- Introduction: Stride length and stride rate are among the most commonly studied linear kinematic parameters. The distance covered by one stride is the stride length. A stride is defining as the time between two consecutive specific discrete events as shown in Fig. 1 and the number of strides per minute is the stride rate (frequency). Running and walking velocity is the result of the relationship between stride rate and stride length. That is: Running Speed = Stride Length * Stride rate Step length Stride length Step length Gait cycle 1 Step or base width

Change in Stride Length & Stride Rate with running velocity 1- Aim of exterminate To understand how Stride Rate (SR) and Stride Length (SL) change over different speeds of locomotion 2- Introduction: Stride length and stride rate are among the most commonly studied linear kinematic parameters. The distance covered by one stride is the stride length. A stride is defining as the time between two consecutive specific discrete events as shown in Fig. 1 and the number of strides per minute is the stride rate (frequency). Running and walking velocity is the result of the relationship between stride rate and stride length. That is: Running Speed = Stride Length * Stride rate Step length Stride length Step length Gait cycle 1 Step or base width

Biology: The Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter33: Sensory Perception

Section: Chapter Questions

Problem 1CT: Like other nocturnal carnivores, the ferret shown in FIGURE 33.13 has light-reflecting material in...

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