The effects of kinesio taping on the color intensity of superficial skin hematomas: A pilot study  Stefano Vercelli, Claudio Colombo, Francesca Tolosa, Andrea Moriondo, Elisabetta Bravini, Giorgio Ferriero, Sartorio Francesco  Physical Therapy in Sport  Volume 23, Pages 156-161 (January 2017) DOI: 10.1016/j.ptsp.2016.06.005 Copyright © 2016 Elsevier Ltd Terms and Conditions

Fig. 1 The standardized digital system used to capture images. Physical Therapy in Sport 2017 23, 156-161DOI: (10.1016/j.ptsp.2016.06.005) Copyright © 2016 Elsevier Ltd Terms and Conditions

Fig. 2 The figure shows how areas were selected at T0 (left) and T1 (right) to compare color intensity changes (Δ) for the treated (KT1, KT2, KT3, representing the three different degrees of strain applied) and control (non-KT) areas. Physical Therapy in Sport 2017 23, 156-161DOI: (10.1016/j.ptsp.2016.06.005) Copyright © 2016 Elsevier Ltd Terms and Conditions

Fig. 3 The figure shows how areas were selected at T0 (left) and T1 (right) to compare color intensity changes (Δ) between the edges and centers of the tails. Physical Therapy in Sport 2017 23, 156-161DOI: (10.1016/j.ptsp.2016.06.005) Copyright © 2016 Elsevier Ltd Terms and Conditions

Fig. 4 The figure shows how areas were selected at T1 from the edge (Kase et al., 2003) and the center (Tsai et al., 2009) of each KT tail, applied with different degrees of strain. Physical Therapy in Sport 2017 23, 156-161DOI: (10.1016/j.ptsp.2016.06.005) Copyright © 2016 Elsevier Ltd Terms and Conditions

Fig. 5 Box plot for ΔL*a*b* values (black lines are means, boxes are 25th and 75th percentiles, whiskers are min and max) from pre/post comparison. SN = no strain; SL = paper-off (light) strain; SF = full longitudinal stretch. Physical Therapy in Sport 2017 23, 156-161DOI: (10.1016/j.ptsp.2016.06.005) Copyright © 2016 Elsevier Ltd Terms and Conditions

Fig. 6 Box plot of ΔL*a*b* values (black lines are means, boxes are 25th and 75th percentiles, whiskers are min and max) obtained at T1 comparing the area under the edges with area under the center of all tails. Physical Therapy in Sport 2017 23, 156-161DOI: (10.1016/j.ptsp.2016.06.005) Copyright © 2016 Elsevier Ltd Terms and Conditions

Fig. 7 Box plot of ΔL*a*b* values (black lines are means, boxes are 25th and 75th percentiles, whiskers are min and max) obtained at T1 between edge and central area under different degrees of strain applied. SN = no strain; SL = paper-off (light) strain; SF = full longitudinal stretch. Physical Therapy in Sport 2017 23, 156-161DOI: (10.1016/j.ptsp.2016.06.005) Copyright © 2016 Elsevier Ltd Terms and Conditions

Fig. 8 Graphical representation of the Cornsweet effect. The two areas in the upper image have the same hue and brightness, but are perceived by the human eye as two different shades of gray, a darker (A) and a lighter one (B), due to the presence of the central ‘ridge,’ which consists of two rows of pixels of different shades of gray. When the central ridge is hidden by a black band (lower image) this effect is no longer evident. Physical Therapy in Sport 2017 23, 156-161DOI: (10.1016/j.ptsp.2016.06.005) Copyright © 2016 Elsevier Ltd Terms and Conditions

Fig. 9 Representation of the Cornsweet effect on an image from a patient. Observing the picture on the left (A) one perceives the area under the KT tail as lighter than the surrounding skin. This perceived difference in chromatic intensity is reduced when the areas near the margins are hidden (B). Physical Therapy in Sport 2017 23, 156-161DOI: (10.1016/j.ptsp.2016.06.005) Copyright © 2016 Elsevier Ltd Terms and Conditions