Key result
In adults with spinal cord injury, body composition characteristics showed significant moderate associations (r > 0.30) with cardiometabolic health biomarkers, whereas physical activity dimensions did not.
Cross-Sectional (n=33)
No
Effect estimate: r > 0.30
p-value: p=<0.04
In persons with spinal cord injury, body composition characteristics are more strongly associated with cardiometabolic health biomarkers than physical activity dimensions, highlighting the importance of managing adiposity and energy balance.
Body composition may guide cardiometabolic risk assessment in spinal cord injury; leaves open independent effects of physical activity.
Objective: To examine (i) the associations between physical activity dimensions, cardiorespiratory fitness and body composition and, (ii) the associations between physical activity dimensions, cardiorespiratory fitness, body composition and biomarkers of cardiometabolic health in persons with spinal cord injury (SCI).Methods: A cross-sectional prospective cohort study with 7-day follow-up was conducted. Body composition, cardiorespiratory fitness and biomarkers of cardiometabolic health were measured in thirty-three participants with SCI (> 1 year post injury). Physical activity dimensions were objectively assessed over 7-days.Results: Activity energy expenditure (r =.43), physical activity level (r =.39), and moderate-to-vigorous physical activity (MVPA) (r =.48) were significantly (P < 0.001) associated with absolute (L/min) peak oxygen uptake (⩒O2 peak). ⩒O2 peak was significantly higher in persons performing ≥150 MVPA minutes/week compared to <40 minutes/week (P = 0.003). Individual physical activity dimensions were not significantly associated with biomarkers of cardiometabolic health. However, body composition characteristics (BMI, waist and hip circumference) showed significant (P < 0.04), moderate (r >.30) associations with parameters of metabolic regulation, lipid profiles and inflammatory biomarkers. Relative ⩒O2 peak (ml/kg/min) was moderately associated with only insulin sensitivity (r = 0.37, P = 0.03).Conclusions: Physical activity dimensions are associated with cardiorespiratory fitness; however, stronger and more consistent associations suggest that poor cardiometabolic health is associated with higher body fat content. Given these findings, the regulation of energy balance should be an important consideration for researchers and clinicians looking to improve cardiometabolic health in persons with SCI.
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Nightingale et al. (2017) conducted a cross-sectional in Spinal cord injury (n=33). Physical activity and body composition vs. Lower physical activity or lower adiposity was evaluated on Association between body composition characteristics (BMI, waist and hip circumference) and biomarkers of cardiometabolic health (r > 0.30, p=<0.04). In adults with spinal cord injury, body composition characteristics showed significant moderate associations (r > 0.30) with cardiometabolic health biomarkers, whereas physical activity dimensions did not.
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