TY - JOUR
T1 - Facial feature tracking
T2 - a psychophysiological measure to assess exercise intensity?
AU - Miles, Kathleen H
AU - Clark, Bradley
AU - Périard, Julien D
AU - Goecke, Roland
AU - Thompson, Kevin G
PY - 2018/4/18
Y1 - 2018/4/18
N2 - The primary aim of this study was to determine whether facial feature tracking reliably measures changes in facial movement across varying exercise intensities. Fifteen cyclists completed three, incremental intensity, cycling trials to exhaustion while their faces were recorded with video cameras. Facial feature tracking was found to be a moderately reliable measure of facial movement during incremental intensity cycling (intra-class correlation coefficient = 0.65–0.68). Facial movement (whole face (WF), upper face (UF), lower face (LF) and head movement (HM)) increased with exercise intensity, from lactate threshold one (LT1) until attainment of maximal aerobic power (MAP) (WF 3464 ± 3364mm, P < 0.005; UF 1961 ± 1779mm, P = 0.002; LF 1608 ± 1404mm, P = 0.002; HM 849 ± 642mm, P < 0.001). UF movement was greater than LF movement at all exercise intensities (UF minus LF at: LT1, 1048 ± 383mm; LT2, 1208 ± 611mm; MAP, 1401 ± 712mm; P < 0.001). Significant medium to large non-linear relationships were found between facial movement and power output (r
2 = 0.24–0.31), HR (r
2 = 0.26–0.33), [La
−] (r
2 = 0.33–0.44) and RPE (r
2 = 0.38–0.45). The findings demonstrate the potential utility of facial feature tracking as a non-invasive, psychophysiological measure to potentially assess exercise intensity.
AB - The primary aim of this study was to determine whether facial feature tracking reliably measures changes in facial movement across varying exercise intensities. Fifteen cyclists completed three, incremental intensity, cycling trials to exhaustion while their faces were recorded with video cameras. Facial feature tracking was found to be a moderately reliable measure of facial movement during incremental intensity cycling (intra-class correlation coefficient = 0.65–0.68). Facial movement (whole face (WF), upper face (UF), lower face (LF) and head movement (HM)) increased with exercise intensity, from lactate threshold one (LT1) until attainment of maximal aerobic power (MAP) (WF 3464 ± 3364mm, P < 0.005; UF 1961 ± 1779mm, P = 0.002; LF 1608 ± 1404mm, P = 0.002; HM 849 ± 642mm, P < 0.001). UF movement was greater than LF movement at all exercise intensities (UF minus LF at: LT1, 1048 ± 383mm; LT2, 1208 ± 611mm; MAP, 1401 ± 712mm; P < 0.001). Significant medium to large non-linear relationships were found between facial movement and power output (r
2 = 0.24–0.31), HR (r
2 = 0.26–0.33), [La
−] (r
2 = 0.33–0.44) and RPE (r
2 = 0.38–0.45). The findings demonstrate the potential utility of facial feature tracking as a non-invasive, psychophysiological measure to potentially assess exercise intensity.
KW - Facial expression
KW - facial movement
KW - exercise regulation
KW - perceived exertion
KW - affect
KW - Physical Exertion/physiology
KW - Heart Rate/physiology
KW - Humans
KW - Middle Aged
KW - Perception/physiology
KW - Facial Expression
KW - Bicycling/physiology
KW - Exercise/physiology
KW - Lactic Acid/blood
KW - Face/physiology
KW - Video Recording
KW - Adult
KW - Time and Motion Studies
KW - Head/physiology
KW - Movement/physiology
KW - Psychophysiology
UR - http://www.scopus.com/inward/record.url?scp=85021629313&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/facial-feature-tracking-psychophysiological-measure-assess-exercise-intensity-1
U2 - 10.1080/02640414.2017.1346275
DO - 10.1080/02640414.2017.1346275
M3 - Article
C2 - 28665235
SN - 0264-0414
VL - 36
SP - 934
EP - 941
JO - Journal of Sports Sciences
JF - Journal of Sports Sciences
IS - 8
ER -