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Physiological and biomechanical responses of running with and without a stroller : sport and physical activity

Even though the three-wheeled baby strollers that are widely used during jogging (JS) have been available for almost twenty years, limited information regarding the physiological and biomechanical effects of jogging with a stroller is available. Therefore, the purpose of this study was to determine the impact of jogging / running with a stroller on oxygen consumption, heart rate (HR), step length and step frequency. Following testing for body composition and maximal oxygen consumption (VO2max), eight experienced female runners completed two supervised, randomized, self-paced 2.4 kilometre (km) running trials while pushing (JS) or not pushing (CON) a stroller on a concrete sidewalk. The time to complete the 2.4 km run was not different between JS and CON (687 ± 30 versus 660 ± 18 seconds). Mean steady state HR (173.0 ± 5.0 versus 167.0 ± 5.1 beats / min) and oxygen consumption (VO2) (40.1 ± 3.1 versus 36.1 ± 2.8 m l / kg / min) were higher (p < 0.05) in JS than CON, respectively. JS resulted in a greater (p < 0.05) number of steps taken (1969 ± 78 versus 1886 ± 74) and reduced (p < 0.05) step length (1.24 ± 0.06 versus 1.29 ± 0.06 metres) compared to CON. The use of a JS resulted in an approximate 4% increase in HR and an approximate 11% increase in VO2, perhaps due to changes in the normal running stride pattern and the application of an external load from the jogging stroller.