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Table 4 Baseline to Week 16 Body Composition Changes

From: The role of age in the physiological adaptations and psychological responses in bikini-physique competitor contest preparation: a case series

Body Composition Recommended Range Baseline Pre-Contest (Week 16) Δ Change Δ% Change
Bikini Competitor Contest Preparation
Weight (kg) 55.90 51.50 −4.40 −4.10
BMI (kg∙m−2) 18.5–24.9 20.99 19.34 −1.65 −4.10
Fat Mass (kg) 11.71 7.394 −4.32 − 22.59
Body Fat (%) ≥12 21.8 14.9 −6.90 −18.80
SAT Total (mm) 49.19 24.36 24.83 −33.76
LBM (kg) 42.14 42.301 0.16 0.19
SKMM (kg) 21.22 20.84 −0.38 −0.90
DeltCSA (cm2) 33.62 36.51 2.89 4.12
GMMT (cm) 4.21 3.284 −0.93 −12.36
BMC Total (kg) 2.25 2.241 − 0.01 −0.20
BMD Total (g∙cm−2) 1.119 1.090 −0.03 −1.31
TBW (L) 32.28 32.39 0.11 0.17
ECF (L) 11.81 12.02 0.21 0.88
ICF (L) 20.41 20.41 0.00 0.00
Masters Bikini Competitor Contest Preparation
Weight (kg) 53.07 48.7 −4.37 −4.29
BMI (kg∙m-2) 18.5–24.9 21.75 19.96 −1.79 −4.29
Fat Mass (kg) 9.98 6.77 −3.21 −19.14
Body Fat (%) ≥12 19.5 14.4 −5.10 −15.04
SAT Total (mm) 33.54 26.07 −7.47 −12.52
LBM (kg) 41.27 40.23 −1.04 −1.28
SKMM (kg) 19.6 18.66 −0.94 −2.46
DeltCSA (cm2) 26.71 29.60 2.89 5.14
GMMT (cm) 3.97 2.29 −1.68 −26.77
BMC Total (kg) 2.12 2.098 −0.02 −0.52
BMD Total (g∙cm-2) 1.101 1.114 0.01 0.59
TBW (L) 32.79 31.89 −0.90 −1.39
ECF (L) 12.72 12.11 −0.61 −2.46
ICF (L) 20.32 19.82 −0.50 −1.25
  1. Subcutaneous adipose tissue (SAT); Lean body mass (LBM); Skeletal muscle mass (SKMM);
  2. Deltoid cross-sectional area (DeltCSA); Gluteus maximus muscle thickness (GMMT)
  3. Bone mineral content (BMC); Bone mineral density (BMD); Total body water (TBW);
  4. Extracellular fluid (ECF); Intracellular fluid (ICF)