Applying a systems model of training to a patient with coronary artery disease.
OBJECTIVE
The aim of the present study was to apply a systems model of training for athletes to a patient with coronary artery disease (CAD) undergoing phase 3 rehabilitation.


METHODS
A patient with CAD underwent 14 wk of training during which exercise was quantified using intensity and duration. Real exercise tolerance was assessed twice a week during this period using a constant-load test. The model exercise tolerance was obtained by convolving the quantified training to real exercise tolerance. The model parameters were obtained by fitting the real exercise tolerance to model exercise tolerance by the least square method. These parameters were then used to calculate the time needed after a training impulse to reach maximal tolerance (tg) and then to return to the pretraining level of tolerance (ti).


RESULTS
The results showed that: 1) the fit between real and model exercise tolerances was significant (r = 0.73, P < 0.05), and 2) tg and ti were predicted 17 and 120 d posttraining, respectively.


CONCLUSIONS
The application of a systems model of training for athletes to a patient with CAD was successful. We were able to predict the maximal exercise tolerance and the duration of increased tolerance subsequent to the training period.
Le Bris
Stephanie
S
UPRES EA 2991 Sports, Performance and Health Laboratory, School of Sports Sciences, University of Montpellier I, France. lebris@univ-montp1.fr
Ledermann
Bertrand
B
Candau
Robin
R
Davy
Jean Marc
JM
Messner-Pellenc
Patrick
P
Le Gallais
Daniel
D
D000222:Adaptation, Physiological; D000328:Adult; D003324:Coronary Artery Disease / Q000503:physiopathology* / Q000534:rehabilitation / Q000628:therapy; D015444:Exercise; D006801:Humans; D008297:Male; D008962:Models, Theoretical