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Mailing Address: Ricardo Stein Hospital de Clínicas de Porto Alegre (HCPA), Universidade Federal do Rio Grande do Sul (UFRGS) Largo Eduardo Zaccaro Faraco, Rua Ramiro Barcelos 2350 Serviço de Fisiatria,Térreo. Postal Code: 90035-903, Porto Alegre, RS Brazil. E-mail: rstein@cardiol.br Speed and Grade Increment During Cardiopulmonary Treadmill Testing: Impact on Exercise Prescription Karlyse C. Belli,1 Paula F. Da Silva,1 Leandro T. Franzoni,2 Jonathan Myers,3,4 Ricardo Stein,2,5 Jorge P. Ribeiro†5 Hospital de Clínicas de Porto Alegre,1 Porto Alegre, RS Brazil Study Group in Exercise Cardiology (CardioEx),2 Porto Alegre, RS Brazil Stanford University,3 Palo Alto, California USA VA Palo Alto Health Care System,4 Palo Alto, California USA Federal University of Rio Grande do Sul,5 Porto Alegre, RS Brazil