What are we supposed to do with the data?
C1 = readcell('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1250767/AC.xlsx')
T1 = 5001×11 cell array
{'subj item' } {'subj value' } {'Cal item' } {'Cal value' } {'Time (ms)'} {'LEFT_Fz (N)'} {'RIGHT_Fz (N)'} {'LEFT_Contact'} {'RIGHT_Contact'} {'Single Contact'} {'Double Contact'}
{'last name' } {'CARRIEL' } {'Date' } {[21-Nov-2022]} {[ 0]} {[ 0]} {[ 896.6305]} {[ 0]} {[ 1]} {[ 1]} {[ 0]}
{'first name' } {'Alfonso' } {'Time' } {[ 0.4811]} {[ 2]} {[ 0]} {[ 893.2404]} {[ 0]} {[ 1]} {[ 1]} {[ 0]}
{'sex' } {'M' } {'Sampling Freq (Hz)' } {[ 500]} {[ 4]} {[ 0]} {[ 889.6016]} {[ 0]} {[ 1]} {[ 1]} {[ 0]}
{'weight (kg)' } {[ 79]} {'# points' } {[ 5000]} {[ 6]} {[ 0]} {[ 885.8262]} {[ 0]} {[ 1]} {[ 1]} {[ 0]}
{'height (cm)' } {[ 165.3000]} {'start trigger' } {'yes' } {[ 8]} {[ 0]} {[ 882.0458]} {[ 0]} {[ 1]} {[ 1]} {[ 0]}
{'birth date' } {[04-May-1984 ]} {'cells_dist (m)' } {[ 0]} {[ 10]} {[ 0]} {[ 878.4049]} {[ 0]} {[ 1]} {[ 1]} {[ 0]}
{'age (years)' } {[ 38.5500]} {'<Reserved>' } {1×1 missing } {[ 12]} {[ 0]} {[ 875.0555]} {[ 0]} {[ 1]} {[ 1]} {[ 0]}
{'extra comment' } {'Marcha normal - marcha inclinado'} {'PGA_V(z)' } {[ 8]} {[ 14]} {[ 0]} {[ 872.1480]} {[ 0]} {[ 1]} {[ 1]} {[ 0]}
{'Plate weight (kg)'} {[ 78.9900]} {'PGA_H(y)' } {[ 16]} {[ 16]} {[ 0]} {[ 869.8227]} {[ 0]} {[ 1]} {[ 1]} {[ 0]}
{1×1 missing } {1×1 missing } {'PGA_L(x)' } {[ 16]} {[ 18]} {[ 0]} {[ 868.1986]} {[ 0]} {[ 1]} {[ 1]} {[ 0]}
{1×1 missing } {1×1 missing } {'referential orientation'} {[ -1]} {[ 20]} {[ 0]} {[ 867.3644]} {[ 0]} {[ 1]} {[ 1]} {[ 0]}
{1×1 missing } {1×1 missing } {'Direction' } {[ 1]} {[ 22]} {[ 0]} {[ 867.3719]} {[ 0]} {[ 1]} {[ 1]} {[ 0]}
{1×1 missing } {1×1 missing } {'Slope (deg)' } {[ 0]} {[ 24]} {[ 0]} {[ 868.2339]} {[ 0]} {[ 1]} {[ 1]} {[ 0]}
{1×1 missing } {1×1 missing } {'Forces Filtering' } {'no' } {[ 26]} {[ 0]} {[ 869.9253]} {[ 0]} {[ 1]} {[ 1]} {[ 0]}
{1×1 missing } {1×1 missing } {'Filter_Z_cutoff (Hz)' } {1×1 missing } {[ 28]} {[ 0]} {[ 872.3884]} {[ 0]} {[ 1]} {[ 1]} {[ 0]}
T2 = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1250772/AC_nor_4km_Plot_and_Store_Rep_1.0.xlsx','VariableNamingRule','preserve')
T2 = 20201×10 table
X[s] R TIBIALIS ANTERIOR: EMG 2 X[s]_1 R VASTUS MEDIALIS: EMG 7 X[s]_2 R GASTROCNEMIUS LATERAL HEAD: EMG 14 (IM) X[s]_3 R VASTUS LATERALIS: EMG 15 (IM) X[s]_4 R GASTROCNEMIUS MEDIAL HEAD: EMG 16 (IM)
__________ __________________________ __________ ________________________ ______ _________________________________________ ______ _______________________________ ______ ________________________________________
0 0 0 0 0 0 0 0 0 0
0.00051923 0 0.00051923 0 0.0009 0 0.0009 0 0.0009 0
0.0010385 0 0.0010385 0 0.0018 0 0.0018 0 0.0018 0
0.0015577 0 0.0015577 0 0.0027 0 0.0027 0 0.0027 0
0.0020769 0 0.0020769 0 0.0036 0 0.0036 0 0.0036 0
0.0025962 0 0.0025962 0 0.0045 0 0.0045 0 0.0045 0
0.0031154 0 0.0031154 0 0.0054 0 0.0054 0 0.0054 0
0.0036346 0 0.0036346 0 0.0063 0 0.0063 0 0.0063 0
0.0041538 0 0.0041538 0 0.0072 0 0.0072 0 0.0072 0
0.0046731 0 0.0046731 0 0.0081 0 0.0081 0 0.0081 0
0.0051923 0 0.0051923 0 0.009 0 0.009 0 0.009 0
0.0057115 0 0.0057115 0 0.0099 0 0.0099 0 0.0099 0
0.0062308 0 0.0062308 0 0.0108 0 0.0108 0 0.0108 0
0.00675 0 0.00675 0 0.0117 0 0.0117 0 0.0117 0
0.0072692 0 0.0072692 0 0.0126 0 0.0126 0 0.0126 0
0.0077885 0 0.0077885 0 0.0135 0 0.0135 0 0.0135 0
.