RESULTS	No clinically relevant or statistically significant ( P < 0.05 ) differences were observed in the primary efficacy parameter : mean changes ( s ) in exercise tolerance were +8.6 , +8.2 , +2.2 , and +7.1 for the telmisartan 10 - , 20 - , 40 - , and 80-mg groups , respectively , and +1.4 for enalapril .\