Abstract
Our purpose was to examine the effects of altering cadence on 5-mile (8.045 km) time-trial (TT) performance in well-trained amateur male cyclists. Twelve cyclists (mean [SD] age: 24 [4] y; body mass: 70.9 [5.9] kg; and V·O2max: 4.56 [0.52] L · min-1) rode three 5-mile TT. The first was at their freely chosen or preferred cadence (PC); the other two, high cadence (HC; PC + 10.8 %) and low cadence (LC; PC - 9.2 %), were randomly assigned and completed in a counterbalanced crossover design. Subjects rode their own bicycles, fitted with a power meter, and attached to a windload simulator. Practice sessions were completed 2 d prior to each TT. Cadences for PC, LC, and HC were 92 (2), 83 (6), 101 (6) rpm, respectively; they were also significantly different from each other (p < 0.05). LC was 2.5 % faster than HC and more economical than HC and PC (66 [3], 69 [2], 71 [4 W · L-1O2 · min-1, respectively) (p ≤ 0.05). LC heart rate and ventilatory efficiency (V·E/V·O2-ratio) were lower than PC counterparts, while LC and HC minute ventilation (V·E) were less than PC V·E (p < 0.05). LC may be the optimal cadence for 5 mile TT in well-trained amateur male cyclists because LC was the most economical, was faster than HC, resulted in the greatest proportion of fastest times (58 % vs. 25 % and 17 % for PC and HC, respectively), and elicited less cardiorespiratory strain than PC.
Key words
Bicycling - pedaling - power - velocity - physiology
References
-
1
Ahlquist L E, Bassett Jr D R, Sufit R, Nagle F J, Thomas D P.
The effect of pedaling frequency on glycogen depletion rates in type I and type II quadriceps muscle fibers during submaximal cycling exercise.
Eur J Appl Physiol Occup Physiol.
1992;
65
360-364
-
2
Boning D, Gonen Y, Maassen N.
Relationship between work load, pedal frequency, and physical fitness.
Int J Sports Med.
1984;
5
92-97
-
3
Borg G, Hassmen P, Lagerstrom M.
Perceived exertion related to heart rate and blood lactate during arm and leg exercise.
Eur J Appl Physiol Occup Physiol.
1987;
56
679-685
-
4
Chavarren J, Calbet J A.
Cycling efficiency and pedalling frequency in road cyclists.
Eur J Appl Physiol Occup Physiol.
1999;
80
555-563
-
5
Coast J R, Cox R H, Welch H G.
Optimal pedalling rate in prolonged bouts of cycle ergometry.
Med Sci Sports Exerc.
1986;
18
225-230
-
6
Coast J R, Welch H G.
Linear increase in optimal pedal rate with increased power output in cycle ergometry.
Eur J Appl Physiol Occup Physiol.
1985;
53
339-342
-
7
Gardner A S, Stephens S, Martin D T, Lawton E, Lee H, Jenkins D.
Accuracy of SRM and power tap power monitoring systems for bicycling.
Med Sci Sports Exerc.
2004;
36
1252-1258
-
8
Hagberg J M, Mullin J P, Bahrke M, Limburg J.
Physiological profiles and selected psychological characteristics of national class American cyclists.
J Sports Med Phys Fitness.
1979;
19
341-346
-
9
Hagberg J M, Mullin J P, Giese M D, Spitznagel E.
Effect of pedaling rate on submaximal exercise responses of competitive cyclists.
J Appl Physiol.
1981;
51
447-451
-
10
Hull M L, Gonzalez H K, Redfield R.
Optimization of pedaling rate in cycling using a muscle stress-based objective function.
Int J Sport Biomechanics.
1988;
4
1-20
-
11
Lucia A, Hoyos J, Chicharro J L.
Preferred pedalling cadence in professional cycling.
Med Sci Sports Exerc.
2001;
33
1361-1366
-
12
Lucia A, Hoyos J, Perez M, Santalla A, Chicharro J L.
Inverse relationship between V·O2max and economy/efficiency in world-class cyclists.
Med Sci Sports Exerc.
2002;
34
2079-2084
-
13
Lucia A, Hoyos J, Santalla A, Perez M, Chicharro J L.
Kinetics of V·O(2) in professional cyclists.
Med Sci Sports Exerc.
2002;
34
320-325
-
14
Lucia A, San Juan A F, Montilla M, CaNete S, Santalla A, Earnest C, Perez M.
In professional road cyclists, low pedaling cadences are less efficient.
Med Sci Sports Exerc.
2004;
36
1048-1054
-
15
MacIntosh B R, Neptune R R, Horton J F.
Cadence, power, and muscle activation in cycle ergometry.
Med Sci Sports Exerc.
2000;
32
1281-1287
-
16
Marsh A P, Martin P E.
Effect of cycling experience, aerobic power, and power output on preferred and most economical cycling cadences.
Med Sci Sports Exerc.
1997;
29
1225-1232
-
17
Moritani T, Muro M.
Motor unit activity and surface electromyogram power spectrum during increasing force of contraction.
Eur J Appl Physiol Occup Physiol.
1987;
56 (3)
260-265
-
18
Moussay S, Bessot N, Gauthier A, Larue J, Sesboue B, Davenne D.
Diurnal variations in cycling kinematics.
Chronobiol Int.
2003;
20
879-892
-
19
Patterson R P, Moreno M I.
Bicycle pedalling forces as a function of pedalling rate and power output.
Med Sci Sports Exerc.
1990;
22
512-516
-
20
Seabury J J, Adams W C, Ramey M R.
Influence of pedalling rate and power output on energy expenditure during bicycle ergometry.
Ergonomics.
1977;
20
491-498
-
21
Sidossis L S, Horowitz J F, Coyle E F.
Load and velocity of contraction influence gross and delta mechanical efficiency.
Int J Sports Med.
1992;
13
407-411
-
22
Signorile J, Holden S, Coast J R.
The feasibility of the windload simulator as an alternative to on-road training.
J Appl Sport Sci Res.
1992;
4
5-8
-
23
Takaishi T, Yamamoto T, Ono T, Ito T, Moritani T.
Neuromuscular, metabolic, and kinetic adaptations for skilled pedaling performance in cyclists.
Med Sci Sports Exerc.
1998;
30
442-449
-
24
Zoladz J A, Rademaker A C, Sargeant A J.
Human muscle power generating capability during cycling at different pedalling rates.
Exp Physiol.
2000;
85
117-124
Greig Watson
Department of Kinesiology
University of Connecticut
Storrs
CT 06269
USA
Telefon: + 8604862649
eMail: greig.watson@huskymail.uconn.edu
