Assessment of physiological demand in kitesurfing.
To evaluate the physiological demands of kitesurfing, ten elite subjects performed an incremental running test on a 400-m track and a 30-min on-water crossing trial during a light crosswind (LW, 12-15 knots). Oxygen uptake (V(O)(2)) was estimated from the heart rate (HR) recorded during the crossing trial using the individual HR-V(O)(2) relationship determined during the incremental test. Blood lactate concentration [La(b)] was measured at rest and 3 min after the exercise completion. Mean HR and estimated V(O)(2) values represented, respectively 80.6 +/- 7.5% of maximal heart rate and 69.8 +/- 11.7% of maximal oxygen uptake for board speeds ranging from 15 to 17 knots. Low values for [La(b)] were observed at the end of crossing trial (2.1 +/- 1.2 mmol l(-1). This first analysis of kitesurfing suggests that the energy demand is mainly sustained by aerobic metabolism during a LW condition.
Laboratoire Handibio, groupe Mouvement altéré et efficience énergétique, UFR STAPS, Université de Toulon-Var, 83957, La Garde Cedex, France. vercruyssen@univ-tln.fr
F
F
Vercruyssen
N
N
Blin
D
D
L'huillier
J
J
Brisswalter
D000328:Adult; D005080:Exercise Test; D017079:Exercise Tolerance; D005260:Female; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008297:Male; D010101:Oxygen Consumption / Q000502:physiology*; D013177:Sports / Q000502:physiology*