hypothesis question: to what extent does changing speed (4mph, 8mph, 12mph) when running at a constant time (8min) affect the body temperature (°C) and heart rate (bpm) of a 15 yr old female?
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hypothesis question: to what extent does changing speed (4mph, 8mph, 12mph) when running at a constant time (8min) affect the body temperature (°C) and heart rate (bpm) of a 15 yr old female?
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- The following graph is simulated (but realistic) data from a VO₂max trial of a human athlete running (no gait changes). Estimate and label the following variables: VO2 (ml/kg/min) 1. VO₂max 2. Incremental cost of locomotion 3. Maximum aerobic speed 4. RMR + postural costs 70 60 50 40 30 20 10 0 2 3 4 5 6 7 8 9 10 11 12 13 MPHPlease answer fast How would the relationship between VE /VO₂ under the following conditions? A .An aging person who remains sedentary versus an aging person who performs regular aerobic activities? B.During transition from adolescence to young adulthood?How does investigating the homeostasis changes during exercise illustrate homeostatic feedback mechanisms in three ways? Note - Please put emphasis on homeostasis changes during exercise and don't bring much of chemistry into it.
- Exercise increases MAP. True or Falserespectively. Speculate about what this ratio difference means in terms of muscle activity potential and a possible evolutionary significance of this difference. 4. Fleas can jump up to 40 times their body length. However, calculation on the biomechanics of the leg extensor muscles, do not provide enough force to account for such jumps. If the flea's ability to jump high is not reliant upon muscle strength, how else could the leg structure be modified to assist in the flea jumping mechanism? How would you test your idea? Search.entries or author Unread Edit View Insert Format Tools Table 12pt v Paragraph v B I A 1) 2$ & 4 6 dele E T Y U H J K L Dz * 00Now, the bears I live with average, the males, eight to twelve hundred pounds [360 to 540 kg]. They're the largest bears in the world. They've been clocked at 41 [mph] and they've run a hundred meter dash in 5.85 seconds, which a human on steroids doesn't even approach. 1. Compute the speed of a grizzly bear using Mr. Treadwell's hundred meter dash statement. 2. Compute the momentum of a grizzly bear using the speed you calculated in part 1 and the average mass of 450kg. 3. How fast would a 250 lb man have to run to have the same momentum you calculated in part 2? (You may have to convert units first). 4. How fast would a 4000 lb car have to drive to have the same momentum you calculated in part 2? (You may have to convert units first)
- ngs. QUESTION 25 What is the difference between ballistic and proprioceptive neuromuscular facilitation (PNF)? Ballistic stretching involves moving quickly, bouncing, or using momentum to produce a stretch. This type of stretch is often viewed as necessary for sport movements and should be reserved for coaching and conditioning athletes and not used in general physical education. An example would be bouncing down repeatedly to touch the toes. Proprioceptive Neuromuscular Facilitation (PNF) is a static stretch using combinations of active and passive stretching techniques. This specialized static stretch uses a contraction-relaxation combination of movements, taking advantage of reflexes and neuromuscular principles to relax the muscles being stretched. Proprioceptive Neuromuscular Facilitation (PNF) involves moving quickly, bouncing, or using momentum to produce a stretch. This type of stretch is often viewed as necessary for sport movements and should be reserved for coaching and…10) Suppose the fish could not keep pace with the highest speed tested and collapsed during the last minute of a 15-minute trial. Would the first 14 minutes be an accurate reflection of its metabolic swimming costs? Explain.Muscle Contraction In an experiment, the strength of a neural stimulus and the resulting muscle contraction are compared. A single motor neuron that synapses with one muscle fibre is observed in this experiment. One end of the muscle fibre is attached to a mass. The following data were obtained from the experiment. Analyze the data and answer the following questions. Number of Trials Strength of Stimulus (mV) Mass Lifted by Muscle Contraction (g) 1 20 2 40 3 60 50 4 80 50 100 Not Tested 120 50 *note that the voltage applied is positive in order to raise potential from resting to threshold Identify the manipulated, responding and controlled variables in the experiment described above. Strength of Stimulus Number of Muscle Fibre Stimulated Mass Lifted by Muscle Contraction
- Muscle Contraction In an experiment, the strength of a neural stimulus and the resulting muscle contraction are compared. A single motor neuron that synapses with one muscle fibre is observed in this experiment. One end of the muscle fibre is attached to a mass. The following data were obtained from the experiment. Number of Trials Strength of Stimulus (mV) Mass Lifted by Muscle Contraction (g) 1 20 0 2 40 0 3 60 50 4 80 50 5 100 Not Tested 6 120 50 *note that the voltage applied is positive in order to raise potential from resting to threshold Identify the manipulated, responding and controlled variables in the experiment described above. Strength of Stimulus Number of Muscle Fibre Stimulated Mass Lifted by Muscle ContractionConflicting Claims About the Effect of Exercise on the Rate of Clothespin Squeezing Student A claims that a person will be able to squeeze a clothespin more times in a minute if the person exercises first. Student A suggests that exercising produces a faster pulse rate, which indicates that the blood is getting to the muscles faster. Student B claims that a person will be able to squeeze the clothespin more times in a minute if the person does not exercise first. Student B suggests that exercise takes energy away from the muscles, and a person who has been resting will have more energy. Which of the two students do you agree with? How could you find out for sure which claim is correct ?For an animal engaging in sustained exercise, why is there notone single ideal speed?
