Self-reported night activity score and its association with daytime orthostatic pulse rate, anthropometrical indices, hemoglobin genotypes and blood groups in apparently healthy young individuals

Studies have enumerated the heath adversities associated with night work. The study investigated whether self-reported night activity score was associated with daytime orthostatic pulse rate, anthropometric indices and inherent biological indices such as hemoglobin genotype and blood group in apparently healthy young individuals. 100 participants comprising of 48 males and 52 females and averaging 19.7± 0.22 12 years who satisfied the inclusion criteria were selected for the research. A well-structured questionnaire was designed to determine extent at which the participants engaged in night activity. Pulse rate and other parameters were determined using standard procedures. Although daytime orthostasis caused a significant increase in pulse rate when compared with baseline, it has no significant relationship with self-reported night score. Self-reported night score showed no relationship with body weight (r=0.003), body height (r=-0.026), body mass index (r=-0.012), age (r=-0.052), gender (x2=2.199) and hemoglobin genotype (x2=2.883). However, there was a significant association (x2=20.630, P