الإنتاج البحثي لأعضاء هيئة التدريس بالكلية V.8 - Flipbook - Page 158
ﺟﻮرج ﺟﺒﻮر ﺟﺒﻮر.د
ﺟﺎﻣﻌﺔ ﻗﻄﺮ-أﺳﺘﺎذ ﻣﺸﺎرك ﺑﻘﺴﻢ اﻟﺘﺮﺑﯿﺔ اﻟﺒﺪﻧﯿﺔ – ﻛﻠﯿﺔ اﻟﺘﺮﺑﯿﺔ
gjabbour@qu.edu.qa
ORCID
0000-0003-4758-8772
Scopus ID
36008561200
(1) Majed, L., Ibrahim, R., Jean Lock, M., Jabbour G. (2024) Walking around the preferred
speed: examination of metabolic, perceptual, spatiotemporal and stability parameters. Front.
Physiol (15) 1357172. https://doi.org/10.3389/fphys.2024.1357172
Abstract:
Walking is the most accessible and common type of physical activity. Exercising at one’s selfselected intensity could provide long-term benefits as compared to following prescribed intensities.
The aim of this study was to simultaneously examine metabolic, perceptual, spatiotemporal and
stability parameters at an absolute 3 km·h−1 speed range around the individual preferred walking
speed (PWS). Thirty-four young sedentary adults (18 women) volunteered to walk at seven speeds
relative to their PWS in 3-min trials interspaced with 3-min rest intervals. Results indicated a
significant main effect of speed on all studied variables. While metabolic, perceptual and
spatiotemporal values were sensitive to the smallest change in speed (i.e., 0.5 km·h−1), a significant
increase in the rate of carbohydrate oxidation and decrease in %fat oxidation were only observed
at speeds above PWS. Results also revealed significantly higher coefficients of variation for stride
characteristics at speeds below PWS only. Moreover, analyses of best fit models showed a
quadratic relationship between most variables and speed, with the exceptions of metabolic cost of
transport, rating of perceived exertion and stride duration that changed exponentially with speed.
PWS coincided with optimized mechanical efficiency, fuel oxidation and gait stability. This
indicated that walking below PWS decreased both mechanical efficiency and stability of gait, while
walking above PWS increased carbohydrate oxidation. Those factors seem to play an important
role as determinants of PWS. We suggest that walking at PWS may provide benefits in terms of fat
oxidation while optimizing gait stability.
(2) Jabbour, G., Hermassi., S. (2024). Hypoglycemia avoidance behaviour in active Qatari
adults with type 1 diabetes under blood glucose monitoring device. Diabetes Epidemiology and
Management
(13), 100176.https://doi.org/10.1016/j.deman.2023.100176
The present study aimed to explore the relationship between fear of hypoglycemia and exercise
management strategies in active Qatari adults with T1D during the COVID-19 pandemic, and to
explore the potential role of continuous glucose monitoring (CGM) devices in promoting safe
physical activity practices.Participants completed the Hypoglycemia Fear Survey (HFS)
questionnaire and the International Physical Activity Questionnaire (IPAQ). Out of the 102
participants, 41 were considered "active" and under CGM and were included in the
analysis.Multiple linear regression analysis revealed a significant positive correlation between the
behavior dimension of the HFS scores and both vigorous physical activity and MET-minutes per
week (R2 adj. = 0.055; β = 0.56; p = 0.05 and R2 adj. = 0.039; β = 0.38; p = 0.04). The results
showed a significant positive association between HbA1c levels and the behavior dimension of the
HFS (R = 0.39, p = 0.005), as well as between the number of episodes of severe hypoglycemia and
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