TY - JOUR
T1 - The Effects of a 90-km Outdoor Cycling Ride on Performance Outcomes Derived from Ramp-Incremental and 3-Minute All-Out Tests
AU - Bitel, Michael
AU - Keir, Daniel A.
AU - Grossman, Kevin
AU - Barnes, Mikaela
AU - Murias, Juan M.
AU - Belfry, Glen R.
N1 - Publisher Copyright:
© 2024 NSCA National Strength and Conditioning Association. All rights reserved.
PY - 2024/3/1
Y1 - 2024/3/1
N2 - Bitel, M, Keir, DA, Grossman, K, Barnes, M, Murias, JM, and Belfry, GR. The effects of a 90-km outdoor cycling ride on performance outcomes derived from ramp-incremental and 3-minute all-out tests. J Strength Cond Res 38(3): 540-548, 2024 - The purpose of this study was to determine whether laboratory-derived exercise intensity and performance demarcations are altered after prolonged outdoor cycling. Male recreational cyclists (n = 10; RIDE) performed an exhaustive ramp-incremental test (RAMP) and a 3-minute all-out test (3MT) on a cycle ergometer before and after a 90-km cycling ride. RAMP-derived maximal oxygen uptake (VO2max), gas exchange threshold (GET), respiratory compensation point (RCP), and associated power output (PO), as well as 3MT-derived critical power (CP) and work performed above CP, were compared before and after ∼3 hours of outdoor cycling. Six active men served as "no-exercise" healthy controls (CON), who, instead, rested for 3 hours between repeated RAMP and 3MT tests. During the 90-km ride, the duration within the moderate-intensity, heavy-intensity, and severe-intensity domains was 59 ± 24%, 40 ± 24%, and 1 ± 1%, respectively. Compared with pre-90 km, post-RAMP exhibited reductions in (a) VO2max(4.04 ± 0.48 vs. 3.80 ± 0.38 L·min-1; p = 0.026) and associated PO (392 ± 30 W vs. 357 ± 26 W; p = 0.002); (b) the VO2and PO at RCP (3.49 ± 0.46 vs. 3.34 ± 0.43 L·min-1; p = 0.040 and 312 ± 40 W vs. 292 ± 24 W; p = 0.023); and (c) the PO (214 ± 32 W vs. 198 ± 25 W; p = 0.027), but not the VO2at GET (2.52 ± 0.44 vs. 2.44 ± 0.38 L·min-1; p = 0.388). Pre-90 km vs. post-90 km 3MT variables showed reduced W′ (9.8 ± 3.4 vs. 6.8 ± 2.6 kJ; p = 0.002) and unchanged CP (304 ± 26 W and 297 ± 34 W; p = 0.275). In the CON group, there were no differences in VO2max, GET, RCP, W′, CP, or associated power outputs (p > 0.05) pre-to-post 3 hours of rest. The preservation of critical power demonstrates that longer-duration maximal efforts may be sustained after long-duration cycle. However, shorter sprints and higher-intensity efforts eliciting VO2maxwill exhibit decreased PO after 3 hours of a predominantly moderate-intensity cycle.
AB - Bitel, M, Keir, DA, Grossman, K, Barnes, M, Murias, JM, and Belfry, GR. The effects of a 90-km outdoor cycling ride on performance outcomes derived from ramp-incremental and 3-minute all-out tests. J Strength Cond Res 38(3): 540-548, 2024 - The purpose of this study was to determine whether laboratory-derived exercise intensity and performance demarcations are altered after prolonged outdoor cycling. Male recreational cyclists (n = 10; RIDE) performed an exhaustive ramp-incremental test (RAMP) and a 3-minute all-out test (3MT) on a cycle ergometer before and after a 90-km cycling ride. RAMP-derived maximal oxygen uptake (VO2max), gas exchange threshold (GET), respiratory compensation point (RCP), and associated power output (PO), as well as 3MT-derived critical power (CP) and work performed above CP, were compared before and after ∼3 hours of outdoor cycling. Six active men served as "no-exercise" healthy controls (CON), who, instead, rested for 3 hours between repeated RAMP and 3MT tests. During the 90-km ride, the duration within the moderate-intensity, heavy-intensity, and severe-intensity domains was 59 ± 24%, 40 ± 24%, and 1 ± 1%, respectively. Compared with pre-90 km, post-RAMP exhibited reductions in (a) VO2max(4.04 ± 0.48 vs. 3.80 ± 0.38 L·min-1; p = 0.026) and associated PO (392 ± 30 W vs. 357 ± 26 W; p = 0.002); (b) the VO2and PO at RCP (3.49 ± 0.46 vs. 3.34 ± 0.43 L·min-1; p = 0.040 and 312 ± 40 W vs. 292 ± 24 W; p = 0.023); and (c) the PO (214 ± 32 W vs. 198 ± 25 W; p = 0.027), but not the VO2at GET (2.52 ± 0.44 vs. 2.44 ± 0.38 L·min-1; p = 0.388). Pre-90 km vs. post-90 km 3MT variables showed reduced W′ (9.8 ± 3.4 vs. 6.8 ± 2.6 kJ; p = 0.002) and unchanged CP (304 ± 26 W and 297 ± 34 W; p = 0.275). In the CON group, there were no differences in VO2max, GET, RCP, W′, CP, or associated power outputs (p > 0.05) pre-to-post 3 hours of rest. The preservation of critical power demonstrates that longer-duration maximal efforts may be sustained after long-duration cycle. However, shorter sprints and higher-intensity efforts eliciting VO2maxwill exhibit decreased PO after 3 hours of a predominantly moderate-intensity cycle.
KW - VO
KW - anaerobic capacity
KW - cycling on the open road
KW - long-duration exercise
KW - peak power
UR - http://www.scopus.com/inward/record.url?scp=85186526546&partnerID=8YFLogxK
U2 - 10.1519/JSC.0000000000004650
DO - 10.1519/JSC.0000000000004650
M3 - Article
C2 - 38039445
AN - SCOPUS:85186526546
SN - 1064-8011
VL - 38
SP - 540
EP - 548
JO - Journal of Strength and Conditioning Research
JF - Journal of Strength and Conditioning Research
IS - 3
ER -