PMID- 35627465 OWN - NLM STAT- MEDLINE DCOM- 20220531 LR - 20230308 IS - 1660-4601 (Electronic) IS - 1661-7827 (Print) IS - 1660-4601 (Linking) VI - 19 IP - 10 DP - 2022 May 13 TI - Assessing Physical Fitness of Athletes in a Confined Environment during Prolonged Self-Isolation: Potential Usefulness of the Test of Maximal Number of Burpees Performed in 3 Minutes. LID - 10.3390/ijerph19105928 [doi] LID - 5928 AB - Due to a prolonged period of quarantine during the COVID-19 pandemic, it is essential to monitor the physical condition of athletes isolated at home with a fitness tool that measures various aspects of physical fitness, which does not require any special equipment, and can be performed within a small space. This study assessed the reliability and validity of the test of performing the maximal number of burpees in 3 min (or 3-MBT) to monitor strength, power, and aerobic endurance in trained athletes. For Part I (reliability of the 3-MBT), 20 (10 male, 10 female) national athletes from various sports performed the 3-MBT on two separate test sessions. Athletes performed as many burpees as possible within 3 min and the primary performance criteria was the number of burpees completed (where a higher number reflected a better performance). The 3-MBT displayed excellent relative reliability in the athletes, with an intraclass correlation coefficient (ICC) and coefficient of variation (CV %) of >0.92, and <3.0%, respectively. For Part II (validity of the 3-MBT), 40 (20 M, 20 F) athletes performed the 3-MBT, and the countermovement jump (CMJ), isometric mid-thigh pull (IMTP), seated medicine ball throw (SMBT), isometric bench (IBP) and maximal aerobic power (VO2max) tests on separate sessions. When data of male and female athletes were pooled, there were significant correlations between relative 3-MBT and relative CMJ height (r = 0.65, large; p < 0.001), relative IMPT peak force (r = 0.50, large; p < 0.001), relative IBP peak force (r = 0.36, moderate, p = 0.02), and relative VO2max (r = 0.50, large; p < 0.001). In conclusion, the 3-MBT is a reliable and reasonably useful test and is a valid assessment of lower body power and strength, upper body strength and aerobic fitness in trained male and female athletes. FAU - Tai, Joshua Qi Jun AU - Tai JQJ AD - Sport Science and Sport Medicine, Singapore Sport Institute, Sport Singapore, Singapore 397630, Singapore. FAU - Wong, Shu Fen AU - Wong SF AD - Sport Science and Sport Medicine, Singapore Sport Institute, Sport Singapore, Singapore 397630, Singapore. FAU - Chow, Steve Kin Ming AU - Chow SKM AUID- ORCID: 0000-0003-1390-2161 AD - Sport Science and Sport Medicine, Singapore Sport Institute, Sport Singapore, Singapore 397630, Singapore. FAU - Choo, Darine Hui Wen AU - Choo DHW AD - Sport Science and Sport Medicine, Singapore Sport Institute, Sport Singapore, Singapore 397630, Singapore. FAU - Choo, Hui Cheng AU - Choo HC AD - Sport Science and Sport Medicine, Singapore Sport Institute, Sport Singapore, Singapore 397630, Singapore. FAU - Sahrom, Sofyan AU - Sahrom S AD - Sport Physiology, Sport Science, National Youth Sport Institute, Singapore 397778, Singapore. FAU - Aziz, Abdul Rashid AU - Aziz AR AUID- ORCID: 0000-0002-7727-7484 AD - Sport Science and Sport Medicine, Singapore Sport Institute, Sport Singapore, Singapore 397630, Singapore. LA - eng PT - Journal Article DEP - 20220513 PL - Switzerland TA - Int J Environ Res Public Health JT - International journal of environmental research and public health JID - 101238455 SB - IM MH - Athletes MH - *COVID-19 MH - Female MH - Humans MH - Male MH - *Muscle Strength MH - Pandemics MH - Physical Fitness MH - Reproducibility of Results PMC - PMC9142106 OTO - NOTNLM OT - 3-MBT OT - COVID-19 OT - home-based testing OT - isolation OT - maximal exercise OT - quarantined OT - self-testing tool COIS- The authors declare no conflict of interest. EDAT- 2022/05/29 06:00 MHDA- 2022/06/01 06:00 PMCR- 2022/05/13 CRDT- 2022/05/28 01:17 PHST- 2022/04/09 00:00 [received] PHST- 2022/05/11 00:00 [revised] PHST- 2022/05/11 00:00 [accepted] PHST- 2022/05/28 01:17 [entrez] PHST- 2022/05/29 06:00 [pubmed] PHST- 2022/06/01 06:00 [medline] PHST- 2022/05/13 00:00 [pmc-release] AID - ijerph19105928 [pii] AID - ijerph-19-05928 [pii] AID - 10.3390/ijerph19105928 [doi] PST - epublish SO - Int J Environ Res Public Health. 2022 May 13;19(10):5928. doi: 10.3390/ijerph19105928.