TY - JOUR
T1 - Validity and reliability of critical power field testing
AU - Karsten, B.
AU - Jobson, S. A.
AU - Hopker, J.
AU - Stevens, L.
AU - Beedie, C.
PY - 2015/1/1
Y1 - 2015/1/1
N2 - Purpose: To test the validity and reliability of field critical power (CP). Method: Laboratory CP tests comprised three exhaustive trials at intensities of 80, 100 and 105 % maximal aerobic power and CP results were compared with those determined from the field. Experiment 1: cyclists performed three CP field tests which comprised maximal efforts of 12, 7 and 3 min with a 30 min recovery between efforts. Experiment 2: cyclists performed 3 × 3, 3 × 7 and 3 × 12 min individual maximal efforts in a randomised order in the field. Experiment 3: the highest 3, 7 and 12 min power outputs were extracted from field training and racing data. Results: Standard error of the estimate of CP was 4.5, 5.8 and 5.2 % for experiments 1–3, respectively. Limits of agreement for CP were −26 to 29, 26 to 53 and −34 to 44 W for experiments 1–3, respectively. Mean coefficient of variation in field CP was 2.4, 6.5 and 3.5 % for experiments 1–3, respectively. Intraclass correlation coefficients of the three repeated trials for CP were 0.99, 0.96 and 0.99 for experiments 1–3, respectively. Conclusions: Results suggest field-testing using the different protocols from this research study, produce both valid and reliable CP values.
AB - Purpose: To test the validity and reliability of field critical power (CP). Method: Laboratory CP tests comprised three exhaustive trials at intensities of 80, 100 and 105 % maximal aerobic power and CP results were compared with those determined from the field. Experiment 1: cyclists performed three CP field tests which comprised maximal efforts of 12, 7 and 3 min with a 30 min recovery between efforts. Experiment 2: cyclists performed 3 × 3, 3 × 7 and 3 × 12 min individual maximal efforts in a randomised order in the field. Experiment 3: the highest 3, 7 and 12 min power outputs were extracted from field training and racing data. Results: Standard error of the estimate of CP was 4.5, 5.8 and 5.2 % for experiments 1–3, respectively. Limits of agreement for CP were −26 to 29, 26 to 53 and −34 to 44 W for experiments 1–3, respectively. Mean coefficient of variation in field CP was 2.4, 6.5 and 3.5 % for experiments 1–3, respectively. Intraclass correlation coefficients of the three repeated trials for CP were 0.99, 0.96 and 0.99 for experiments 1–3, respectively. Conclusions: Results suggest field-testing using the different protocols from this research study, produce both valid and reliable CP values.
KW - Critical power
KW - Critical velocity
KW - Field-testing capacity
KW - Reliability
KW - Validity
KW - 2020
UR - http://www.scopus.com/inward/record.url?scp=84941102453&partnerID=8YFLogxK
U2 - 10.1007/s00421-014-3001-z
DO - 10.1007/s00421-014-3001-z
M3 - Article
C2 - 25260244
AN - SCOPUS:84941102453
VL - 115
SP - 197
EP - 204
JO - European Journal of Applied Physiology
JF - European Journal of Applied Physiology
SN - 1439-6319
IS - 1
ER -