Höchsmann C Meister S Gehrig D Gordon E Li Y Nussbaumer M Rossmeissl A Schäfer J Hanssen H Schmidt-Trucksäss A 2018 OBJECTIVE To assess if active commuting with an electrically assisted bicycle (e-bike) during a 4-week period can induce increases in cardiorespiratory fitness measured as peak oxygen uptake (V[Combining Dot Above]O2peak) in untrained, overweight individuals, and if these changes are comparable with those induced by a conventional bicycle. DESIGN Four-week randomized pilot study. SETTING Controlled laboratory. PARTICIPANTS Thirty-two volunteers (28 men) participated. Seventeen {median age 37 years [interquartile range (IQR) 34, 45], median body mass index [BMI] 29 kg/m [IQR 27, 31]} were randomized to the E-Bike group and 15 [median age 43 years (IQR 38, 45), median BMI 28 kg/m (IQR 26, 29)] to the Bike group. INTERVENTIONS Participants in both groups were instructed to use the bicycle allocated to them (e-bike or conventional bicycle) for an active commute to work in the Basel (Switzerland) area at a self-chosen speed on at least 3 days per week during the 4-week intervention period. MAIN OUTCOME MEASURES V[Combining Dot Above]O2peak was assessed before and after the intervention in an all-out exercise test on a bicycle ergometer. RESULTS V[Combining Dot Above]O2peak increased by an average of 3.6 mL/(kg·min) [SD 3.6 mL/(kg·min)] in the E-Bike group and by 2.2 mL/(kg·min) [SD 3.5 mL/(kg·min)] in the Bike group, with an adjusted difference between the 2 groups of 1.4 mL/(kg·min) [95% confidence interval, -1.4-4.1; P = 0.327]. CONCLUSIONS E-bikes may have the potential to improve cardiorespiratory fitness similar to conventional bicycles despite the available power assist, as they enable higher biking speeds and greater elevation gain. https://sonar.ch/global/documents/53667 eng info:eu-repo/semantics/altIdentifier/doi/10.1097/JSM.0000000000000438 info:eu-repo/semantics/altIdentifier/pmid/29095201 Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine. - 2018 Adult Bicycling Cardiorespiratory Fitness Female Humans Male Middle Aged Overweight Oxygen Consumption Sports Equipment Switzerland Transportation Effect of E-Bike Versus Bike Commuting on Cardiorespiratory Fitness in Overweight Adults: A 4-Week Randomized Pilot Study. http://purl.org/coar/resource_type/c_6501