Effect of Ziziphus Jujube Supplementation on Anti-Fatigue among Elite Endurance Athletes

Chin, Yi (2020) Effect of Ziziphus Jujube Supplementation on Anti-Fatigue among Elite Endurance Athletes. Final Year Project (Bachelor), Tunku Abdul Rahman University College.

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Abstract

The aim of this study was to determine the effect of Ziziphus Jujube on anti-fatigue among elite endurance athletes. Fourteen male elite endurance athletes (age=24.0±4.6years; height=169±4.0cm;weight=62.43±6.57kg;VO2max=57.83±6.52ml.kg.min-1) participated in this study. Subjects were assigned to experimental (n=7) and control (n=7) groups using a systematic counter balancing method. Both groups undertook a preliminary and two experimental trials (PET1 & 2). Experimental group was required to consume 14 days of Ziziphus Jujube with a dosage of 0.5g/kg of body weight per day, whilst the control group did not receive any intervention throughout the testing period. PET 1 & PET 2 were conducted after 7 days and 14 days of Ziziphus Jujube ingestion or no ingestion. During preliminary testing, subjects underwent a submaximal graded run test followed by a modified Astrand incremental run test. During PET 1 & 2, subjects performed a 45 minutes of constant run at 65% of VO2max followed by an incremental run test. Results showed that there was a significant increase in time to exhaustion (TTE) (time=12.96±1.51min; p=.011) in the experimental group. VO2 in the experimental group was significantly lower at time point time point V1@S3-V2@S3 (VO2=39.26±5.28ml.kg.min-1; p=.009), V1@S4-V2@S4 (VO2=43.53±4.85ml.kg.min-1; p=.009) and V1@S5-V2@S5 (VO2=47.43±5.11 ml.kg.min-1; p=.014). However, there was no significant difference in TTE during prolonged exercise testing (PET 1 & 2) between experimental and control groups. Also, there was no significant difference in physiological measurements (heart rate, VO2, RPE, haemoglobin, hematocrit, lactate and glucose levels) during prolonged exercise testings (PET1 & 2) between Ziziphus Jujube group and control group. In conclusion, there was a favourable outcome shown in experimental group through ingestion of Ziziphus Jujube on TTE and VO2 during experimental trials. However, the dosage prescribed for Ziziphus Jujube supplementation in experimental group was insufficient to show a significant result while compared to control group on all variables measured.