I need help solving the three equations using the chart below and explaining if the physical therapist would have a more difficult rehabilitation problem with Joe or Sam and why?

Suppose that you are a physical therapist working Note that both Joe and Sam have the same AE, but that with Joe and Sam. You are working with them to . Joe has a high negative CE but a low VE, which maintain a consistent 50 cm stride length while walk- means that his 6 strides tend to be consistently ing. To determine the intervention approach each short of the target stride length for his stride of them will need, you have both of them walk six lengths. strides on a runway. The following illustration shows . Sam has a low positive CE but a high VE, which their performance for each stride. The 50 cm distance means that his 6 strides are inconsistently long and targets for each stride are marked as vertical lines short of the target stride length. across the runway; the numbers represent the location of the foot placement on each stride by showing the Discussion question: Based on the CE and VE differ- direction (+ = too far; - = too short) and distance ences, would the physical therapist have a more difficult (cm) Joe and Sam missed the target stride length. rehabilitation problem ahead with Joe or Sam? Why? Sam +15 -12 +10 -12 +12 +5 Joe -15 -12 -10 -12 -12 -5 Avg. AE = _ | x; - T| /K Calculating the average AE, average CE, and VE: AE AE CE CE Where Stride No. Joe Sam Joe Sam x = score for repetition i 1 15 15 -15 15 T = target score 2 12 12 -12 k = number of repetitions -12 3 10 10 -10 10 Avg. CE = E ( x-T) / k 4 12 12 -12 -12 VE = VE(x, -Avg. CE)2/ k 5 12 12 -12 12 6 5 5 -5 5 Total 66 66 -66 18 Avg 11 11 -11 3 VE 3.1 11.0