Abstract:
:The aim of this study was to investigate the effects of a weight loss intervention based on physical exercise on the relationship between energy cost and stride frequency during walking in obese teenagers. Participants aged 13-16 years old were assigned to a training (n = 14) and control (n = 10) groups. During eight weeks, the training group performed three 60-min weekly sessions of high-intensity intermittent activities coupled with aerobic training. Body composition, gait parameters and energy cost during 4-min walking bouts at participants' most comfortable speed and preferred stride frequency (PSF), PSF-10%, PSF + 10%, PSF-20% and PSF + 20% were measured before and after intervention. The effects of training and stride frequencies on the energy cost of walking were analysed by an ANOVA with repeated measures. The main results showed that the exercise intervention induced a significant increase in walking speed (+23.2%), and significant decreases in body mass (-1.4%), body fat percentage (-2.1%) and energy cost of walking at various frequencies (decreases ranging from -10.5% to -20.4%, p < .05). In addition, significantly greater decreases were shown at high frequencies (p < .05). No significant differences were shown in the control group (p > .05). These results suggest that this type of training is beneficial to reduce walking energy cost of obese teenagers, in particular at high frequencies. This should improve their well-being during daily activities.
journal_name
Eur J Sport Scijournal_title
European journal of sport scienceauthors
Delextrat A,Matthew D,Brisswalter Jdoi
10.1080/17461391.2015.1061058subject
Has Abstractpub_date
2015-01-01 00:00:00pages
727-35issue
8eissn
1746-1391issn
1536-7290journal_volume
15pub_type
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