The 6th Congress of Exercise and Sport Sciences

A Comparison of Bioelectrical Impedance Analysis: Phase Angle Between Physically Active and Inactive Undergraduates of Sri Lanka – A Cross-Sectional Study

Kushani Jayasinghe 1 T.S.H. Perera 1 D.S.L. Perera 1 H.M.S.U. Bandara 2
1Sport Sciences and Physical Education, Sabaragamuwa University of Sri Lanka, Balangoda, Sabaragamuwa, Sri Lanka
2Discipline of Sport and Exercise Sciences, Faculty of Health, University of Canberra, Bruce, Canberra, Australia

The Phase angle (PhA) is the ratio of entire body reactance (XC) to the resistance that has been measured by Bioelectrical Impedance Analysis (BIA). PhA is a prognostic indicator of medical disorders of cellular health and cellular integrity. Lack of physical activity is a risk factor for many diseases among undergraduates. The objective of this study was to evaluate PhA between physically active and inactive undergraduates of the Faculty of Applied Sciences in Sabaragamuwa University of Sri Lanka. The cross-sectional study design was implemented and participants were selected using a stratified sampling method among undergraduates. Fifty-eight males (mean age 23.5±1.5 years, mean height 170.1±7.7 cm, mean weight 64.7±14.2kg) and 69 females (mean age 23.4±1.3 years, mean height 158.2±5.5cm, mean weight 51.9±8.9kg) were tested for Physical Activity Level by the International Physical Activity Questionnaire (IPAQ) and PhA by utilizing Multifrequency Tanita Body Composition Analyzer (MC-780). BIA was performed at a frequency of 50 kHz for two minutes. Statistical analysis was performed by Minitab version 18. Within this cohort, 23% (n =29) males and 29% (n =37) females were identified as physically inactive undergraduates. According to the two-sample t-test, the significantly different (P0.05) mean values of PhA between physically active and inactive undergraduates (6.10±0.6 and 5.80±0.7) were identified. Higher mean PhA values were observed in both physically active male (6.30±0.6) and female undergraduates (5.70±0.5) compared to physically inactive male (6.20±0.6) and female (5.30 ± 0.5) undergraduates. The mean of Total Body Water (TBW) percentage was higher in physically active undergraduates (51.9±8.1) than inactive undergraduates (49.0±5.2), and mean of Intracellular Water (ICW) in physically active undergraduates was higher (17.6±3.6kg) than inactive undergraduates (16.3±3.7kg). According to the Pearson correlation test, a significant (P0.05) positive relationship was observed of Fat-Free Mass, TBW, Extracellular Water, ICW in all participants despite their physical activity level with PhA value. Undergraduates were in the preferred PhA range. However, physically inactive undergraduates should be concerned about their physical activity level and hydration status which affects cellular health and integrity. Further prospective studies on similar areas are warranted.

Keywords: BIA, Cellular Health, Cellular Integrity, Phase Angle, Undergraduate

Kushani  Jayasinghe
Kushani Jayasinghe
Sabaragamuwa University








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