PERCENT-VO2MAX VERSUS PERCENT-HR(MAX) REGRESSIONS FOR 6 MODES OF EXERCISE

The purpose of the study was to compare the %VO2max versus %HR(max) re gression equations developed from data collected during incremental wo rk on six exercise modes: treadmill (T), cycle (C), skier (S), shuffle skier (SS), stepper (ST), and rower (R). Ten active males were habitu ated to all modes and then performed an incremental test to maximum on each mode. Mode order was assigned by Latin square sequences and the tests were separated by at least 72 h. VO2 and HR were recorded at eac h increment, Regression analyses were performed using SAS-GLM. Regress ions for T, S, SS, and ST were not significantly different. C had a lo wer intercept and higher slope, while R had a higher intercept and low er slope than the other exercise modes. These results suggest that wei ght bearing exercise modes have similar %VO2max-%HR(max) regressions. However, weight supported and arm exercise modes appear to have differ ent regressions.