PMID- 33050362 OWN - NLM STAT- MEDLINE DCOM- 20201204 LR - 20201214 IS - 1660-4601 (Electronic) IS - 1661-7827 (Print) IS - 1660-4601 (Linking) VI - 17 IP - 20 DP - 2020 Oct 10 TI - Effects of Hyperbaric Oxygen Therapy on Inflammation, Oxidative/Antioxidant Balance, and Muscle Damage after Acute Exercise in Normobaric, Normoxic and Hypobaric, Hypoxic Environments: A Pilot Study. LID - 10.3390/ijerph17207377 [doi] LID - 7377 AB - The purpose of this study was to investigate the effects of hyperbaric oxygen therapy (HBOT) on inflammation, the oxidative/antioxidant balance, and muscle damage after acute exercise in normobaric, normoxic (NN) and hypobaric, hypoxic (HH) environments. Eighteen healthy males were selected and randomly assigned to three groups: exercise in NN conditions (NN group, n = 6), HBOT treatment after exercise in NN conditions (HNN group, n = 6), and HBOT treatment after exercise in HH conditions (HHH group, n = 6). All subjects performed treadmill running for 60 min at 75-80% maximum heart rate (HRmax) exercise intensity under each condition. The HBOT treatments consisted of breathing 100% oxygen at 2.5 atmosphere absolute (ATA) for 60 min. Blood samples were collected before exercise (BE), after exercise (AE), and after HBOT (AH) to examine inflammation (fibrinogen, interleukin-6 [IL-6], and tumor necrosis factor-alpha (TNF-alpha)), the oxidative/antioxidant balance (derivatives of reactive oxygen metabolites (d-ROMs) and the biological antioxidant potential (BAP)), and muscle damage (creatine kinase (CK) and lactate dehydrogenase (LDH)). Plasma fibrinogen, serum IL-6, CK, and LDH levels were significantly increased AE compared to BE in all groups (p < 0.05). Plasma fibrinogen levels were significantly decreased AH compared to AE in all groups (p < 0.05), and the HNN group had a significantly lower AH compared to BE (p < 0.05). Serum IL-6 levels were significantly decreased AH compared to AE in the HNN and HHH groups (p < 0.05). Serum CK levels were significantly decreased AH compared to AE in the HHH group (p < 0.05). Serum LDH levels were significantly decreased AH compared to AE in the HNN and HHH groups (p < 0.05), and the NN and HNN groups had significantly higher AH serum LDH levels compared to BE (p < 0.05). These results suggest that acute exercise in both the NN and HH environments could induce temporary inflammatory responses and muscle damage, whereas HBOT treatment may be effective in alleviating exercise-induced inflammatory responses and muscle damage. FAU - Woo, Jinhee AU - Woo J AD - Department of Physical Education, College of Arts and Physical Education, Dong-A University, Busan 49315, Korea. FAU - Min, Jae-Hee AU - Min JH AD - Department of Physical Education, College of Arts and Physical Education, Dong-A University, Busan 49315, Korea. FAU - Lee, Yul-Hyo AU - Lee YH AD - Department of Taekwondo, Youngsan University, Yangsan-si 50510, Korea. FAU - Roh, Hee-Tae AU - Roh HT AUID- ORCID: 0000-0002-3586-1666 AD - Department of Physical Education, College of Arts and Physical Education, Dong-A University, Busan 49315, Korea. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20201010 PL - Switzerland TA - Int J Environ Res Public Health JT - International journal of environmental research and public health JID - 101238455 RN - 0 (Antioxidants) SB - IM MH - *Antioxidants/metabolism MH - *Exercise/physiology MH - Humans MH - *Hyperbaric Oxygenation MH - *Inflammation/blood/therapy MH - Male MH - *Muscular Diseases/blood/therapy MH - *Oxidative Stress MH - Pilot Projects MH - Random Allocation PMC - PMC7601270 OTO - NOTNLM OT - acute exercise OT - healthy young individuals OT - hyperbaric oxygen therapy OT - hypoxia OT - inflammation OT - muscle damage OT - oxidative stress COIS- The authors declare no conflict of interest. EDAT- 2020/10/15 06:00 MHDA- 2020/12/15 06:00 PMCR- 2020/10/01 CRDT- 2020/10/14 01:04 PHST- 2020/09/14 00:00 [received] PHST- 2020/10/06 00:00 [revised] PHST- 2020/10/07 00:00 [accepted] PHST- 2020/10/14 01:04 [entrez] PHST- 2020/10/15 06:00 [pubmed] PHST- 2020/12/15 06:00 [medline] PHST- 2020/10/01 00:00 [pmc-release] AID - ijerph17207377 [pii] AID - ijerph-17-07377 [pii] AID - 10.3390/ijerph17207377 [doi] PST - epublish SO - Int J Environ Res Public Health. 2020 Oct 10;17(20):7377. doi: 10.3390/ijerph17207377.