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OMNI rate of perceived exertion color-face scale
Author
Boey, Peggy Peck Kay
Supervisor
Balasekaran, Govindasamy
Abstract
The OMNI Rate of Perceived Exertion (RPE) scale developed by Robertson is well established as a valid tool to estimate perceived exertion and has been validated with different pictorials and descriptors for different exercise types and age groups. However, a more inclusive single OMNI RPE scale suitable for any age group and exercise type if developed, may increase universal utility.
Purpose: To develop and validate the OMNI RPE Color-Face Scale (CFS) on healthy male and female adults.
Methods: A total of 28 healthy participants were recruited for the study which involved two phases – scale development and validation. For the scale development, all participants were given cut-outs of facial illustrations of the picture system, verbal descriptors and color blocks. Participants matched each item to a corresponding RPE value on a vertical 0 – 10 scale and semantic differential analysis (SDA) was used to determine the appropriate descriptors. In the validation segment, participants were randomly assigned to either experimental (EG) or control group (CG). They completed two laboratory and one outdoor session. The OMNI RPE CFS and OMNI RPE Adult- Walk/run scale was used by EG and CG respectively. In the estimation trial (ET), participants ran a discontinuous graded submaximal treadmill test that involved a 4- minute work-rest cycle. Treadmill gradient was maintained at 1% throughout and speed increased at 0.5km·h-1 per work stage. In the production trial (PT), participants ran three counterbalanced trials (RPE 2, 5 and 7) for 8-minute each. Participants had 3-minutes to adjust the speed and maintain their self-selected speed for the next 5-minutes. Between each trial was a 1-minute active rest at 1km·h-1 with treadmill gradient at 1%. In ET and PT, heart rate (HR) and RPE were recorded during each work stage. In the 3rd session, participants played a two-a-side 30-minutes (5-minutes warm-up, 20-minutes game and 5-minutes cool down) modified soccer game. Participants had to regulate their perceived exertion at RPE 1 – 4 for both warm-up and cool down, and RPE 5 – 7 during the game. RPE and HR were recorded after each segment.
Results: SDA revealed no further changes needed to the pre-designed OMNI RPE CFS. Ventilatory breakpoint (Vpt) was identified at 69.44% for the cohort. Normalized RPE for Vpt was identified at RPE 5. Concurrent validity was obtained with strong positive correlation with OMNI RPE Adult-Walk/run scale for VO2 (r = 0.80, p = 0.00) and HR (r = 0.69, p = 0.00). Construct validity indicated positive linear regression of OMNI RPE CFS against OMNI RPE Adult-Walk/run scale (r = 0.88, p = 0.00). Prescription congruence was attained with no significant difference between ET and PT in HR (p = 0.49) and VO2 (p = 0.97) by cohort. Intensity discrimination indicated significant difference in VO2 (p = 0.65) and HR (p = 0.86) between each increasing RPE during PT. Significant differences was obtained from warm up and cool down with activity in HR (p = 0.17) and RPE (p = 0.05) .
Conclusion: Validation of the OMNI RPE CFS was well established with the validation criteria of OMNI RPE CFS for self-regulation. Validation during outdoor games field settings was also established.
Purpose: To develop and validate the OMNI RPE Color-Face Scale (CFS) on healthy male and female adults.
Methods: A total of 28 healthy participants were recruited for the study which involved two phases – scale development and validation. For the scale development, all participants were given cut-outs of facial illustrations of the picture system, verbal descriptors and color blocks. Participants matched each item to a corresponding RPE value on a vertical 0 – 10 scale and semantic differential analysis (SDA) was used to determine the appropriate descriptors. In the validation segment, participants were randomly assigned to either experimental (EG) or control group (CG). They completed two laboratory and one outdoor session. The OMNI RPE CFS and OMNI RPE Adult- Walk/run scale was used by EG and CG respectively. In the estimation trial (ET), participants ran a discontinuous graded submaximal treadmill test that involved a 4- minute work-rest cycle. Treadmill gradient was maintained at 1% throughout and speed increased at 0.5km·h-1 per work stage. In the production trial (PT), participants ran three counterbalanced trials (RPE 2, 5 and 7) for 8-minute each. Participants had 3-minutes to adjust the speed and maintain their self-selected speed for the next 5-minutes. Between each trial was a 1-minute active rest at 1km·h-1 with treadmill gradient at 1%. In ET and PT, heart rate (HR) and RPE were recorded during each work stage. In the 3rd session, participants played a two-a-side 30-minutes (5-minutes warm-up, 20-minutes game and 5-minutes cool down) modified soccer game. Participants had to regulate their perceived exertion at RPE 1 – 4 for both warm-up and cool down, and RPE 5 – 7 during the game. RPE and HR were recorded after each segment.
Results: SDA revealed no further changes needed to the pre-designed OMNI RPE CFS. Ventilatory breakpoint (Vpt) was identified at 69.44% for the cohort. Normalized RPE for Vpt was identified at RPE 5. Concurrent validity was obtained with strong positive correlation with OMNI RPE Adult-Walk/run scale for VO2 (r = 0.80, p = 0.00) and HR (r = 0.69, p = 0.00). Construct validity indicated positive linear regression of OMNI RPE CFS against OMNI RPE Adult-Walk/run scale (r = 0.88, p = 0.00). Prescription congruence was attained with no significant difference between ET and PT in HR (p = 0.49) and VO2 (p = 0.97) by cohort. Intensity discrimination indicated significant difference in VO2 (p = 0.65) and HR (p = 0.86) between each increasing RPE during PT. Significant differences was obtained from warm up and cool down with activity in HR (p = 0.17) and RPE (p = 0.05) .
Conclusion: Validation of the OMNI RPE CFS was well established with the validation criteria of OMNI RPE CFS for self-regulation. Validation during outdoor games field settings was also established.
Date Issued
2022
Call Number
QP301 Boe
Date Submitted
2022