give a full conclusion and evaluate this pratical in terms of reliablity,validity,limitations and improvements.

its about pulse rate

Name Love W00 Uow UI-X- F G H Before exer+1 min +2 mins +3 mins + 4 mins + 5 mins 1 min rest 2 mins rest 3 mins 82 91 107 96 103 99 81 79 69 76 101 87 94 95 88 78 90 93 94 109 110 122 103 94 71 85 87 90 95 102 74 73 63 71 88 83 82 74 66 62 81 111 109 107 106 110 105 98 65 93 101 102 96 138 64 66 80 105 103 116 115 118 89 90 85 88 106 110 119 123 73 81 78 82 87 90 94 95 87 82 68 57 47 46 74 73 51 42 66 82 88 92 139 141 92 68 J Average 74.83 86.17 93.17 94.00 102.25 107.50 81.08 76.08 79 Name Love W00 Uow UI-X- F G H Before exer+1 min +2 mins +3 mins + 4 mins + 5 mins 1 min rest 2 mins rest 3 mins 82 91 107 96 103 99 81 79 69 76 101 87 94 95 88 78 90 93 94 109 110 122 103 94 71 85 87 90 95 102 74 73 63 71 88 83 82 74 66 62 81 111 109 107 106 110 105 98 65 93 101 102 96 138 64 66 80 105 103 116 115 118 89 90 85 88 106 110 119 123 73 81 78 82 87 90 94 95 87 82 68 57 47 46 74 73 51 42 66 82 88 92 139 141 92 68 J Average 74.83 86.17 93.17 94.00 102.25 107.50 81.08 76.08 79