Within‐subject variability in body composition using dual‐energy X‐rayabsorptiometry

Lorenzo, Antonino De; Andréoli, A.; Candeloro, N

doi:10.1046/j.1365-2281.1997.04242.x

Cited by 46 publications

(26 citation statements)

References 9 publications

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“…Body weight and height were measured to the nearest 0.1 kg and 0.5 cm respectively, and BMI was calculated. Total body fat mass and fat-free mass were determined by dual-energy X-ray absorptiometry (model DPX-MD software version 3.6; Lunar) [20].…”

Section: Volunteers and Preliminary Testingmentioning

confidence: 99%

A single bout of whole-body resistance exercise augments basal VLDL-triacylglycerol removal from plasma in healthy untrained men

et al. 2008

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A single bout of prolonged aerobic exercise lowers plasma TAG (triacylglycerol) concentrations the next day by increasing the efficiency of VLDL (very-low-density lipoprotein)-TAG removal from the circulation. The effect of resistance exercise on VLDL-TAG metabolism is not known. Therefore we evaluated VLDL-TAG kinetics by using stable isotope-labelled tracers in eight healthy untrained men (age, 25.3+/-0.8 years; body mass index, 24.5+/-0.6 kg/m(2)) in the post-absorptive state in the morning on two separate occasions: once after performing a single 90-min bout of strenuous isokinetic resistance exercise (three sets x ten repetitions, 12 exercises at 80% of maximum peak torque production, with a 2-min rest interval between exercises) on the preceding afternoon and once after an equivalent period of rest. Fasting plasma VLDL-TAG concentrations in the morning after exercise were significantly lower than in the morning after rest (0.23+/-0.04 compared with 0.33+/-0.06 mmol/l respectively; P=0.001). Hepatic VLDL-TAG secretion rate was not different (P=0.31), but plasma clearance rate of VLDL-TAG was significantly higher (by 26+/-8%) after exercise than rest (31+/-3 compared with 25+/-3 ml/min respectively; P=0.004), and the mean residence time of VLDL-TAG in the circulation was significantly shorter (113+/-10 compared with 144+/-18 min respectively; P=0.02). Fasting plasma NEFA (non-esterified fatty acid; 'free' fatty acid) and serum beta-hydroxybutyrate concentrations were both significantly higher after exercise than rest (P<0.05), whereas plasma glucose and serum insulin concentrations were not different (P>0.30). We conclude that, in healthy untrained men, a single bout of whole-body resistance exercise lowers fasting plasma VLDL-TAG concentrations by augmenting VLDL-TAG removal from plasma. The effect appears to be qualitatively and quantitatively similar to that reported previously for aerobic exercise.

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Section: Volunteers and Preliminary Testingmentioning

confidence: 99%

A single bout of whole-body resistance exercise augments basal VLDL-triacylglycerol removal from plasma in healthy untrained men

et al. 2008

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“…Body mass index was obtained by the formula BMI = weight (kg)/height 2 (m 2 ). Total body measurements of fat mass and lean mass were made by dualenergy x-ray absorptiometry (model DPX, Lunar, Madison, WI, software version 3.6) [26].…”

Section: Subjects and Preliminary Testingmentioning

confidence: 99%

A single bout of brisk walking increases basal very low-density lipoprotein triacylglycerol clearance in young men

Yiannis¹,

Amalia²,

Bougatsas³

et al. 2007

Metabolism

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“…The precision of DXA (coefficient of variation) for BMC, lean tissue and fat mass is 0.7, 0.8 and 1.6 %, respectively. More information concerning the DXA measurement can be obtained elsewhere (De Lorenzo et al 1997). …”

Section: Anthropometric and Body Composition Measurementsmentioning

confidence: 99%

The anthropometrical and physiological characteristics of elite water polo players

et al. 2005

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In order to examine the physical and physiological demands of water polo, we assessed the profile of elite water polo players. Nineteen male professional water polo players (age: 25.5+/-5.0 years, height: 184.5+/-4.3 cm body mass: 90.7+/-6.4 kg) underwent body composition assessment by dual-energy X-ray absorptiometry. We also evaluated peak oxygen consumption VO2peak, lactate threshold (LT), energy cost of swimming (C s), anaerobic capacity and isokinetic shoulder strength. Body fat (%) was 16.8+/-4.4, lean mass (LM) 75.1+/-4.9 kg and bone mineral density (BMD) 1.37+/-0.07 g.cm(-2) . VO2peak was 57.9+/-7 ml.kg(-1). min(-1) . LT was identified at 3.9+/-0.7 mmol.l(-1) at a swimming velocity (v) of 1.33+/-0.05 m.s(-1) with a heart rate of 154+/-7 bpm, corresponding to an intensity of 83+/-9 of VO2peak. The average C s of swimming at the LT was 1.08+/-0.04 kJ.m(-1).C s at LT was correlated to body mass index (BMI) (r=0.22, P=0.04) and to swimming performance at 400 m (r=0.86, P=0.01) and 4 x 50 m (r=0.84, P<0.01). Internal rotator muscles were stronger compared to the external rotators by a 2:1 ratio. This study provides a quantitative representation of both physical and physiological demands of water polo and proposes a comprehensive battery of tests that can be used for assessing the status of a team.

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Within‐subject variability in body composition using dual‐energy X‐rayabsorptiometry

Cited by 46 publications

References 9 publications

A single bout of whole-body resistance exercise augments basal VLDL-triacylglycerol removal from plasma in healthy untrained men

A single bout of whole-body resistance exercise augments basal VLDL-triacylglycerol removal from plasma in healthy untrained men

A single bout of brisk walking increases basal very low-density lipoprotein triacylglycerol clearance in young men

The anthropometrical and physiological characteristics of elite water polo players

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