Fatma Rhibi1, Jacques Prioux2, Mossadok Ben Attia3, Anthony C Hackney4, Hassane Zouhal2, Abderraouf Ben Abderrahman5. 1. Laboratory of Biomonitoring of the Environment, Faculty of Science of Bizerte, University of Carthage, Tunisia; Laboratory of Movement, Sport and Health (M2S) - EA 1274, University of Rennes 2, F-35000, France. 2. Laboratory of Movement, Sport and Health (M2S) - EA 1274, University of Rennes 2, F-35000, France. 3. Laboratory of Biomonitoring of the Environment, Faculty of Science of Bizerte, University of Carthage, Tunisia. 4. Department of Exercise & Sport Science, University of North Carolina, Chapel Hill, NC, United States. 5. Laboratory of Biomonitoring of the Environment, Faculty of Science of Bizerte, University of Carthage, Tunisia; High Institute of Sports and Physical Education (ISSEP) Ksar Saïd, University of Manouba, Tunisia. Electronic address: benabderrahmanabderraouf@gmail.com.
Abstract
PURPOSE: We studied the effect of two interval training programs of varying intensities (100% vs. 110% of maximal aerobic velocity [MAV]) on hematocrit (Ht), hemoglobin (Hb), and plasma volume variations (PVV) in young men. METHODS:Thirty-nine male volunteered were assigned to two control groups (CG100, n = 9 and CG110, n = 10), and two training groups (one with 100% MAV [EG100, n = 10] and one with 110% MAV [EG110, n = 10]). All participants performed a maximal graded exercise test and an intermittent exercise (IE) protocol. Blood was collected at rest, at the end of the IE and after 15 min of recovery, before and after 8-weeks-training. Interval training (IT) sessions consist of 30s IE run at 100% or 110% MAV with 30s recovery at 50% MAV. RESULTS: After training, time to exhaustion (TTE) was improved in EG110 (+613.7) and EG100 (+397.5). This improvement was greater in EG110 than EG100 (p < 0.005). After training, Hb deceased in EG100 and EG110 at rest (p < 0.01), at the end of IE (p = 0.000) and after 15 min of recovery (p = 0.01). This decrease was more slightly more substantial at rest in EG100 (-0.6%) than EG110 (-0.3%). After training, Ht decreased in EG100 and EG110 at rest (p = 0.001), at the end of IE (p = 0.000) and at 15 min of recovery (p = 0.01). This decrease was more important in EG110 than EG100 at rest (-2.7%), at the end of IE (-2.1%) and after 15 min recovery. After training, PVVrest and PVVend increased in EG100 (+2.2%) and EG110 (+3.2%). No significant difference between EG100 and EG110 was observed. CONCLUSION: Increasing IT intensity by 10% MAV increases PVVrest and PVVend. Despite the fact that EG100 and EG110 had the same PVVend after training, greater performances were recorded in EG110.
RCT Entities:
PURPOSE: We studied the effect of two interval training programs of varying intensities (100% vs. 110% of maximal aerobic velocity [MAV]) on hematocrit (Ht), hemoglobin (Hb), and plasma volume variations (PVV) in young men. METHODS: Thirty-nine male volunteered were assigned to two control groups (CG100, n = 9 and CG110, n = 10), and two training groups (one with 100% MAV [EG100, n = 10] and one with 110% MAV [EG110, n = 10]). All participants performed a maximal graded exercise test and an intermittent exercise (IE) protocol. Blood was collected at rest, at the end of the IE and after 15 min of recovery, before and after 8-weeks-training. Interval training (IT) sessions consist of 30s IE run at 100% or 110% MAV with 30s recovery at 50% MAV. RESULTS: After training, time to exhaustion (TTE) was improved in EG110 (+613.7) and EG100 (+397.5). This improvement was greater in EG110 than EG100 (p < 0.005). After training, Hb deceased in EG100 and EG110 at rest (p < 0.01), at the end of IE (p = 0.000) and after 15 min of recovery (p = 0.01). This decrease was more slightly more substantial at rest in EG100 (-0.6%) than EG110 (-0.3%). After training, Ht decreased in EG100 and EG110 at rest (p = 0.001), at the end of IE (p = 0.000) and at 15 min of recovery (p = 0.01). This decrease was more important in EG110 than EG100 at rest (-2.7%), at the end of IE (-2.1%) and after 15 min recovery. After training, PVVrest and PVVend increased in EG100 (+2.2%) and EG110 (+3.2%). No significant difference between EG100 and EG110 was observed. CONCLUSION: Increasing IT intensity by 10% MAV increases PVVrest and PVVend. Despite the fact that EG100 and EG110 had the same PVVend after training, greater performances were recorded in EG110.
Authors: Nourhen Ghazel; Amine Souissi; Iyed Salhi; Ismail Dergaa; Hugo Cesar Martins-Costa; Sarah Musa; Helmi Ben Saad; Abderraouf Ben Abderrahman Journal: PLoS One Date: 2022-06-03 Impact factor: 3.752
Authors: Jèssica B Bonet; Casimiro Javierre; João Tiago Guimarães; Sandra Martins; David Rizo-Roca; Jorge Beleza; Ginés Viscor; Teresa Pagès; José Magalhães; Joan R Torrella Journal: Int J Environ Res Public Health Date: 2022-01-03 Impact factor: 3.390
Authors: Urs Granacher; Hassane Zouhal; Fatma Rhibi; Abderraouf Ben Abderrahman; Jacques Prioux; Cain C T Clark; Benoît Bideau; Sophia Besbes; Anthony C Hackney Journal: BMC Sports Sci Med Rehabil Date: 2022-08-22