Abstract
Exercise prior to body composition measures using air displacement plethysmography (ADP) and bioelectrical impedance (BIA) is generally contraindicated. Blood flow redistribution varies when using modalities such as treadmill walking (TW), leg cycling (LC) and arm cycling (AC) that may contribute to inaccuracies. Understanding the effect of physical activity using modalities on the accuracy of these devices have practical benefits. PURPOSE: To determine the effect of moderate intensity physical activity using different exercise modalities on body fat percent (BF%) measured by ADP, whole body bioelectrical impedance (WBIA), upper body bioelectrical impedance (UBIA), and lower body bioelectrical impedance (LBIA). METHODS: Seventeen male participants (33.1 ± 9.3 y; 23.0%-49.0% body fat) were included in the study. Participants exercised using TW, LC, and AC (45%-55% heart rate reserve) for 30 minutes on different days including a control condition. BF% was measured pre exercise (PreE), immediately post-exercise (PE0), 15 minutes post-exercise (PE15), 30 minutes post-exercise (PE30), 45 minutes post-exercise (PE45), and 60 minutes post-exercise (60PE) using ADP, WBIA, UBIA and LBIA at each time point. RESULTS: No differences were found during the control for PreE BF% for ADP (18.2 ± 9.9%), WBIA (17.8 ± 7.6%), UBIA (17.8 ± 6.5%), and LBIA (15.6 ± 8.0%). There was no effect of time during the control on BF% except when using UBIA (p=0.03). Using ADP, BF% at PE0 was significantly less than all other time points following TW and LC (p<0.05). Following AC, PE0 was significantly different from PE15-PE60, but not PreE (p=0.06). Using LBIA, after TW only BF% measured at PE15 and PE45 was significantly less than PreE (p<0.05). CONCLUSION: BF% measured by ADP after exercise decreases with all modalities, but generally returns to PreE measures within PE15. WBIA and UBIA BF% are not affected by exercise modality over time. However, LBIA BF% tends to decrease following TM but returns to PreE measures within 60 minutes.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
