Intensidad del ejercicio en ciclismo indoor / Exercise intensity during indoor cycling

El objetivo de este estudio fue cuantificar la intensidad de una sesión de ciclismo indoor. 300 sujetos experimentados realizaron una sesión en la que se registró la FC media entre el minuto 1-15 (FCmedia1), minuto 16-30 (FCmedia2), y minuto 31-intensidad pico de la sesión (FCmedia3). Se obtuvieron valores de RPE en el minuto 15 (RPE15), 30 (RPE30), y 45 (RPE45). La FC media de la sesión fue 144.84 ± 15.59 lpm. La FCmedia1, FCmedia2 y FCmedia3 fue 135.37 ± 16.50 lpm, 148.84 ± 15.85 lpm, y 153.79 ± 16.66 lpm, respectivamente. La RPE15, RPE30 y RPE45 fue 5.39 ± 1.72, 7.14 ± 1.34 y 7.14 ± 2.44, respectivamente. Las correlaciones bivariadas entre la FC y la RPE mostraron correlación significativa en el minuto 15 (r=0.336; p<0.01), 30 (r=0.291; p<0.01), y 45 (r=0.459; p<0.01). Estos datos sugieren que el ciclismo indoor puede ser una actividad de alta intensidad (AU)

The aim of this study was to quantify the intensity linked to an indoor cycling session. 300 healthy experienced subjects performed an indoor cycling session while HR was recorded between minute 1-15 (HRmean1), 16-30 min (HRmean2) and 31 min to the peak intensity of the session (HRmean3). RPE values were obtained at 15 min (RPE15), 30 min (RPE30) and 45 min (RPE45). Mean HR of the session was 144.84 ± 15.59 bpm. HRmean1, HRmean2 and HRmean3 were 135.37 ± 16.50 bpm, 148.84 ± 15.85 bpm, and 153.79 ± 16.66 bpm, respectively. RPE15, RPE30 and RPE45 values were 5.39 ± 1.72, 7.14 ± 1.34 and 7.14 ± 2.44, respectively. Bivariate correlations made between HR and RPE values showed significant correlation at 15 (r=0.336; p<0.01), 30 (r=0.291; p<0.01), and 45 (r=0.459; p<0.01) min. These data suggest that indoor cycling can be a vigorous intensity activity (AU)

Lactate minimum test during incremental running after a submaximal cycling exercise: a novel test with training applications for triathletes.

AIM: The purpose of the present study was to determine whether running speed determined in a lactate minimum test (lactate minimum intensity, LMI) during a treadmill incremental exercise performed just after submaximal cycling corresponds to the speed of a respiratory exchange ratio of 1.00 (RER-1) and, by extension, to the maximal lactate steady state (MLSS) previously obtained in a standard incremental exercise test. METHODS: Eighteen moderately trained triathletes (15 men, 3 women) underwent two exercise sessions 72 h apart in random order: 1) a standard incremental treadmill test to identify the speed corresponding to RER-1, and 2) a submaximal exercise test on a bicycle-ergometer to obtain the LT (lactate threshold) followed by the incremental portion of the lactate minimum test on the treadmill. RESULTS: No significant differences were detected between running speed and heart rate at RER-1 and LMI (14.44±1.24 vs. 14.11±1.36 km·h-1 and 166.38±9.30 vs. 169.55±8.97 beats·min-1, respectively). Moreover, 95% of the differences between the results of the two incremental tests for running speed and heart rate were within the limits of agreement. CONCLUSION: These findings suggest the possibility of obtaining a valid physiological profile of a triathlete using a single test to assess the level of training in both cycling and running.