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Myllyaho MM, Ihalainen JK, Hackney AC, Valtonen M, Nummela A, Vaara E, Häkkinen K, Kyröläinen H, Taipale RS. Hormonal Contraceptive Use Does Not Affect Strength, Endurance, or Body Composition Adaptations to Combined Strength and Endurance Training in Women. J Strength Cond Res 2021; 35:449-457. [PMID: 29927884 DOI: 10.1519/jsc.0000000000002713] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
ABSTRACT Myllyaho, MM, Ihalainen, JK, Hackney, AC, Valtonen, M, Nummela, A, Vaara, E, Häkkinen, K, Kyröläinen, H, and Taipale, RS. Hormonal contraceptive use does not affect strength, endurance, or body composition adaptations to combined strength and endurance training in women. J Strength Cond Res 35(2): 449-457, 2021-This study examined the effects of a 10-week period of high-intensity combined strength and endurance training on strength, endurance, body composition, and serum hormone concentrations in physically active women using hormonal contraceptives (HCs, n = 9) compared with those who had never used hormonal contraceptives (NHCs, n = 9). Training consisted of 2 strength training sessions and 2 high-intensity running interval sessions per week. Maximal bilateral isometric leg press (Isom), maximal bilateral dynamic leg press (one repetition maximum [1RM]), countermovement jump (CMJ), a 3,000-m running test (3,000 m), body composition, and serum hormone levels were measured before and after training between days 1-5 of each subject's menstrual cycle. Both groups increased 1RM and CMJ: HC = 13.2% (p < 0.001) and 9.6% (p < 0.05), and NHC = 8.3% (p < 0.01) and 8.5% (p < 0.001). Hormonal contraceptive improved 3,000 m by 3.5% (p < 0.05) and NHC by 1% (n.s.). Never used hormonal contraceptive increased lean mass by 2.1% (p < 0.001), whereas body fat percentage decreased from 23.9 ± 6.7 to 22.4 ± 6.0 (-6.0%, p < 0.05). No significant changes were observed in body composition in HC. No significant between-group differences were observed in any of the performance variables. Luteinizing hormone concentrations decreased significantly (p < 0.05) over 10 weeks in NHC, whereas other hormone levels remained statistically unaltered in both groups. It seems that the present training is equally appropriate for improving strength, endurance, and body composition in women using HC as those not using HC without disrupting hypothalamic-pituitary-gonadal axis function.
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Affiliation(s)
- Moona M Myllyaho
- Biology of Physical Activity, Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
| | - Johanna K Ihalainen
- Biology of Physical Activity, Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
| | - Anthony C Hackney
- Department of Exercise & Sport Science, University of North Carolina, Chapel Hill, North Carolina
- Department of Nutrition, University of North Carolina, Chapel Hill, North Carolina
| | | | - Ari Nummela
- Research Institute for Olympic Sport, Jyväskylä, Finland
| | - Elina Vaara
- JAMK University of Applied Sciences, Jyväskylä, Finland ; and
| | - Keijo Häkkinen
- Biology of Physical Activity, Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
| | - Heikki Kyröläinen
- Biology of Physical Activity, Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
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202
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Berge J, Hjelmesæth J, Hertel JK, Gjevestad E, Småstuen MC, Johnson LK, Martins C, Andersen E, Helgerud J, Støren Ø. Effect of Aerobic Exercise Intensity on Energy Expenditure and Weight Loss in Severe Obesity-A Randomized Controlled Trial. Obesity (Silver Spring) 2021; 29:359-369. [PMID: 33491314 PMCID: PMC7898283 DOI: 10.1002/oby.23078] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 10/16/2020] [Accepted: 10/27/2020] [Indexed: 12/25/2022]
Abstract
OBJECTIVE This study aimed to compare the effects of two aerobic exercise programs of different intensities on energy expenditure. METHODS This was a single-center randomized controlled trial of patients with severe obesity allocated to a 24-week moderate-intensity continuous training (MICT) program or a combined MICT with high-intensity interval training (HIIT/MICT) program. The primary outcome was energy expenditure during exercise (EEDE). Secondary outcomes included resting metabolic rate, cardiorespiratory fitness, and body composition. RESULTS A total of 82 (56% females) patients were screened, and 71 (55% females) patients were allocated to HIIT/MICT (n = 37) or MICT (n = 34). Per-protocol analysis showed that EEDE increased by 10% (95% CI: 3%-17%) in the HIIT/MICT group (n = 16) and 7.5% (95% CI: 4%-10%) in the MICT group (n = 24), with no differences between groups. In the 8- to 16- week per-protocol analysis, the HIIT/MICT group had a significantly larger increase in EEDE compared with the MICT group. Resting metabolic rate remained unchanged in both groups. HIIT/MICT and MICT were associated with significant weight loss of 5 kg and 2 kg, respectively. CONCLUSIONS Patients completing a 24-week combined HIIT/MICT program did not achieve a higher EEDE compared with those who completed a 24-week MICT program. The HIIT/MICT group experienced, on average, a 3-kg-larger weight loss than the MICT group.
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Affiliation(s)
- Jarle Berge
- Morbid Obesity CentreVestfold Hospital TrustTønsbergNorway
- Clinic of Medicine and RehabilitationVestfold Hospital TrustStavernNorway
- Nature, Health and EnvironmentUniversity of South‐Eastern NorwayBøNorway
| | - Jøran Hjelmesæth
- Morbid Obesity CentreVestfold Hospital TrustTønsbergNorway
- Department of Endocrinology, Morbid Obesity and Preventive MedicineInstitute of Clinical MedicineUniversity of OsloOsloNorway
| | - Jens K. Hertel
- Morbid Obesity CentreVestfold Hospital TrustTønsbergNorway
| | - Espen Gjevestad
- Morbid Obesity CentreVestfold Hospital TrustTønsbergNorway
- Clinic of Medicine and RehabilitationVestfold Hospital TrustStavernNorway
- Norwegian Police University CollegeStavernNorway
| | | | | | - Catia Martins
- Obesity Research GroupDepartment of Cancer Research and Molecular MedicineNorwegian University of Science and TechnologyTrondheimNorway
- Center for ObesityDepartment of SurgerySt. Olav HospitalTrondheim University HospitalTrondheimNorway
| | - Eivind Andersen
- Department of SportPhysical Education and Outdoor Life StudiesUniversity of South‐Eastern NorwayBøNorway
| | - Jan Helgerud
- Department of Circulation and Medical ImagingNorwegian University of Science and TechnologyTrondheimNorway
- MyworkoutMedical Rehabilitation ClinicTrondheimNorway
| | - Øyvind Støren
- Nature, Health and EnvironmentUniversity of South‐Eastern NorwayBøNorway
- Department of SportPhysical Education and Outdoor Life StudiesUniversity of South‐Eastern NorwayBøNorway
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203
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The Effect of High-Intensity Intermittent Training on the Acute Gait Plantar Pressure in Healthy Young Adults. JOURNAL OF BIOMIMETICS BIOMATERIALS AND BIOMEDICAL ENGINEERING 2021. [DOI: 10.4028/www.scientific.net/jbbbe.49.21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High-intensity intermittent training (HIIT) has been successfully applied in various sports activities, as HIIT was considered as one of the most efficient training methods of exercise for improving physical performance and reducing the weight of overweight individuals. However, its acute effects of HIIT on gait and balance performance were not addressed. Thus, in this study we examined the acute effects of HIIT on dynamic postural control compared with steady-state training (SST) by analyzing plantar pressure parameters. In this study, sixteen healthy male adults were examined in 3 days. After exhaustive ramp-like cycle ergometer testing, the maximal heart rate (HRmax) of each participant was determined on the first day, then either a 20 minutes HIIT at 80–90% of HRmax or a 20 minutes SST at 60% of HRmax was randomly performed on the second and third day, respectively. Plantar pressure parameters were collected at comfortable walking velocity immediately after HIIT and SST respectively, and compared with the baseline data of plantar pressure gathered before maximal ramp test on the first day. The results showed significant differences in the plantar pressure in these three conditions of gait. Compared to pre-intervention and pre-SST, peak pressure and maximum force in the middle and lateral metatarsal increased significantly in post-HIIT. Meanwhile, the foot balance data indicate that post-HIIT exhibits more foot pronation than baseline. The center of pressure (COP) trajectory was medially shifted during the stance phase in post-SST, and noticeably in post-HIIT. The displacement and velocity of medial-lateral COP in the initial contact phase were greater in post-HIIT; while during the forefoot contact phase, post-HIIT showed fewer time percentages and greater velocity of medial-lateral COP. In conclusion, a single high-intensity intermittent training session adversely affected the acute dynamic postural control than steady-state training in healthy male adults.
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204
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Papandreou A, Philippou A, Zacharogiannis E, Maridaki M. Physiological Adaptations to High-Intensity Interval and Continuous Training in Kayak Athletes. J Strength Cond Res 2021; 34:2258-2266. [PMID: 29952869 DOI: 10.1519/jsc.0000000000002710] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Papandreou, A, Philippou, A, Zacharogiannis, E, and Maridaki, M. Physiological adaptations to high-intensity interval and continuous training in kayak athletes. J Strength Cond Res 34(8): 2258-2266, 2020-High-intensity interval training (HIIT) seems to be more effective than continuous training (CT) for the improvement of physical condition and sports performance. This study compared physiological adaptations with HIIT and CT in flat water kayak athletes. Twenty-four national-class kayakists were divided into 3 groups (n = 8 per group), 2 of which participated in an 8-week CT or HIIT program, whereas the third one served as control (C). An incremental maximum oxygen uptake (V[Combining Dot Above]O2max), a maximal anaerobic Wingate-type, as well as 1,000-m (T1,000 m) and 200-m (T200 m) time test were performed before and after the training period on a kayak ergometer, to determine changes in V[Combining Dot Above]O2max, peak blood lactate ([La]peak), paddling speed at V[Combining Dot Above]O2max ((Equation is included in full-text article.)), heart rate at V[Combining Dot Above]O2max (HRpeak), paddling economy speed (PEs; speed at 75% of V[Combining Dot Above]O2max), paddling speed at anaerobic ventilatory threshold (PSVT2), maximal paddling speed (PSpeak), and reduction of PSpeak (PSR). V[Combining Dot Above]O2max, [La]peak, HRpeak, and PSR did not change after the 8-week training compared with baseline in either training group (p > 0.05). However, significant changes were found in PSVT2 and T200 m (HIIT), (Equation is included in full-text article.), PEs, PSpeak, and T1,000 m (CT and HIIT) (p < 0.05-0.0001) as compared to baseline. Moreover, percent changes were different between the training groups in PEs, and between control and training groups in PSpeak and (Equation is included in full-text article.)(p < 0.05-0.01). Both training programs improved physiological and performance variables; however, HIIT resulted in significant changes of PSVT2 and T200 m and higher improvement of PEs with 15 times less training time compared with CT. Thus, HIIT seems more time-efficient than CT for improving paddling economy of kayaking performance.
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Affiliation(s)
- Apostolos Papandreou
- School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece; and
| | - Anastassios Philippou
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Elias Zacharogiannis
- School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece; and
| | - Maria Maridaki
- School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece; and
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205
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Sotiridis A, Debevec T, Ciuha U, McDonnell AC, Mlinar T, Royal JT, Mekjavic IB. Aerobic but not thermoregulatory gains following a 10-day moderate-intensity training protocol are fitness level dependent: A cross-adaptation perspective. Physiol Rep 2021; 8:e14355. [PMID: 32061183 PMCID: PMC7023889 DOI: 10.14814/phy2.14355] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 10/28/2019] [Indexed: 11/24/2022] Open
Abstract
Moderate‐intensity exercise sessions are incorporated into heat‐acclimation and hypoxic‐training protocols to improve performance in hot and hypoxic environments, respectively. Consequently, a training effect might contribute to aerobic performance gains, at least in less fit participants. To explore the interaction between fitness level and a training stimulus commonly applied during acclimation protocols, we recruited 10 young males of a higher (more fit‐MF, peak aerobic power [VO2peak]: 57.9 [6.2] ml·kg−1·min−1) and 10 of a lower (less fit‐LF, VO2peak: 41.7 [5.0] ml·kg−1·min−1) fitness level. They underwent 10 daily exercise sessions (60 min@50% peak power output [Wpeak]) in thermoneutral conditions. The participants performed exercise testing on a cycle ergometer before and after the training period in normoxic (NOR), hypoxic (13.5% FiO2; HYP), and hot (35°C, 50% RH; HE) conditions in a randomized and counterbalanced order. Each test consisted of two stages; a steady‐state exercise (30 min@40% NOR Wpeak to evaluate thermoregulatory function) followed by incremental exercise to exhaustion. VO2peak increased by 9.2 (8.5)% (p = .024) and 10.2 (15.4)% (p = .037) only in the LF group in NOR and HE, respectively. Wpeak increases were correlated with baseline values in NOR (r = −.58, p = .010) and HYP (r = −.52, p = .018). MF individuals improved gross mechanical efficiency in HYP. Peak sweat rate increased in both groups in HE, whereas MF participants activated the forehead sweating response at lower rectal temperatures post‐training. In conclusion, an increase in VO2peak but not mechanical efficiency seems probable in LF males after a 10‐day moderate‐exercise training protocol.
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Affiliation(s)
- Alexandros Sotiridis
- Department of Automation, Biocybernetics and Robotics, Jozef Stefan Institute, Ljubljana, Slovenia
| | - Tadej Debevec
- Department of Automation, Biocybernetics and Robotics, Jozef Stefan Institute, Ljubljana, Slovenia.,Faculty of Sports, University of Ljubljana, Ljubljana, Slovenia
| | - Urša Ciuha
- Department of Automation, Biocybernetics and Robotics, Jozef Stefan Institute, Ljubljana, Slovenia
| | - Adam C McDonnell
- Department of Automation, Biocybernetics and Robotics, Jozef Stefan Institute, Ljubljana, Slovenia
| | - Tinkara Mlinar
- Department of Automation, Biocybernetics and Robotics, Jozef Stefan Institute, Ljubljana, Slovenia.,Jozef Stefan International Postgraduate School, Ljubljana, Slovenia
| | - Joshua T Royal
- Department of Automation, Biocybernetics and Robotics, Jozef Stefan Institute, Ljubljana, Slovenia.,Jozef Stefan International Postgraduate School, Ljubljana, Slovenia
| | - Igor B Mekjavic
- Department of Automation, Biocybernetics and Robotics, Jozef Stefan Institute, Ljubljana, Slovenia
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206
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Berg OK, Paulsberg F, Brabant C, Arabsolghar K, Ronglan S, Bjørnsen N, Tørhaug T, Granviken F, Gismervik S, Hoff J. High-Intensity Shoulder Abduction Exercise in Subacromial Pain Syndrome. Med Sci Sports Exerc 2021; 53:1-9. [PMID: 32555026 DOI: 10.1249/mss.0000000000002436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Subacromial pain syndrome (SAPS) defined as pain of nontraumatic origin localized around the acromion, is a debilitating, common, and often chronic condition. Among many proposed underlying causes of SAPS, hypoperfusion and hypoxic conditions in and around the tendons may be an intrinsic cause of SAPS. PURPOSE This study aimed to determine if adding high-intensity aerobic interval training (HIIT) of the rotator cuff to usual care was feasible in SAPS and improved shoulder endurance more than usual care alone, as well as to examine the influence on shoulder pain and disability and the response of tendinous microcirculation after HIIT. METHODS Twenty-one subjects with chronic SAPS were randomized to two groups: experimental group (EG; n = 13) receiving HIIT in addition to treatment as usual and control group (CG; n = 8) receiving treatment as usual. Before and after 8 wk of exercise therapy, endurance performance was assessed by an incremental abduction exercise of the arm to exhaustion (TTE). Pain and disability was assessed by the shoulder pain and disability index (SPADI). Contrast-enhanced ultrasound of the musculus supraspinatus and tendon was utilized to indicate tendon blood flow. RESULTS Endurance in the TTE test improved by an estimated 233 s more on average in EG than in CG (P = 0.001; 95% confidence interval, 102 to 363). The SPADI score was reduced 22 points more on average in EG (P = 0.017; 95% confidence interval, -40 to -5). The change from pretest to posttest was significant in EG for both TTE test and SPADI improvement (P < 0.001). EG also experienced less pain during exercise after the intervention compared with CG (P < 0.001). Contrast-enhanced ultrasound indicated an increase in tendinous blood flow in EG (P = 0.019). CONCLUSIONS HIIT rotator cuff exercise seems to be a feasible intervention in SAPS, increasing endurance performance more than usual care alone.
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Affiliation(s)
- Ole Kristian Berg
- Faculty of Health and Social Sciences, Molde University College, Molde, NORWAY
| | | | | | - Keyvan Arabsolghar
- Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, NORWAY
| | - Sigrid Ronglan
- Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, NORWAY
| | - Nina Bjørnsen
- Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, NORWAY
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207
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Gasser B, Fitze D, Franchi M, Frei A, Niederseer D, Schmied CM, Catuogno S, Frey W, Flück M. The Cardiovascular Response to Interval Exercise Is Modified by the Contraction Type and Training in Proportion to Metabolic Stress of Recruited Muscle Groups. SENSORS 2020; 21:s21010173. [PMID: 33383837 PMCID: PMC7795051 DOI: 10.3390/s21010173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 12/23/2020] [Accepted: 12/23/2020] [Indexed: 01/20/2023]
Abstract
Background: Conventional forms of endurance training based on shortening contractions improve aerobic capacity but elicit a detriment of muscle strength. We hypothesized that eccentric interval training, loading muscle during the lengthening phase of contraction, overcome this interference and potentially adverse cardiovascular reactions, enhancing both muscle metabolism and strength, in association with the stress experienced during exercise. Methods: Twelve healthy participants completed an eight-week program of work-matched progressive interval-type pedaling exercise on a soft robot under predominately concentric or eccentric load. Results: Eccentric interval training specifically enhanced the peak power of positive anaerobic contractions (+28%), mitigated the strain on muscle’s aerobic metabolism, and lowered hemodynamic stress during interval exercise, concomitant with a lowered contribution of positive work to the target output. Concentric training alone lowered blood glucose concentration during interval exercise and mitigated heart rate and blood lactate concentration during ramp exercise. Training-induced adjustments for lactate and positive peak power were independently correlated (p < 0.05, |r| > 0.7) with indices of metabolic and mechanical muscle stress during exercise. Discussion: Task-specific improvements in strength and muscle’s metabolic capacity were induced with eccentric interval exercise lowering cardiovascular risk factors, except for blood glucose concentration, possibly through altered neuromuscular coordination.
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Affiliation(s)
- Benedikt Gasser
- Departement für Sport, Bewegung und Gesundheit—Abteilung Rehabilitative und Regenerative Sportmedizin—Universität Basel—Birsstrasse, 320B CH, 4052 Basel, Switzerland;
| | - Daniel Fitze
- Laboratory for Muscle Plasticity, Departement of Orthopaedics Balgrist Campus, University of Zurich Lengghalde, 8008 Zürich, Switzerland; (D.F.); (A.F.); (S.C.); (W.F.)
- Balgrist University Hospital Forchstrasse 319, 8008 Zürich, Switzerland
| | - Martino Franchi
- Department of Biomedical Sciences, University of Padova, 35131 Padua, Italy;
| | - Annika Frei
- Laboratory for Muscle Plasticity, Departement of Orthopaedics Balgrist Campus, University of Zurich Lengghalde, 8008 Zürich, Switzerland; (D.F.); (A.F.); (S.C.); (W.F.)
- Balgrist University Hospital Forchstrasse 319, 8008 Zürich, Switzerland
| | - David Niederseer
- Sports Cardiology Section, Department of Cardiology, University Heart Center Zurich, University Hospital Zurich, University of Zurich, 8091 Zurich, Switzerland; (D.N.); (C.M.S.)
| | - Christian M. Schmied
- Sports Cardiology Section, Department of Cardiology, University Heart Center Zurich, University Hospital Zurich, University of Zurich, 8091 Zurich, Switzerland; (D.N.); (C.M.S.)
| | - Silvio Catuogno
- Laboratory for Muscle Plasticity, Departement of Orthopaedics Balgrist Campus, University of Zurich Lengghalde, 8008 Zürich, Switzerland; (D.F.); (A.F.); (S.C.); (W.F.)
- Balgrist University Hospital Forchstrasse 319, 8008 Zürich, Switzerland
| | - Walter Frey
- Laboratory for Muscle Plasticity, Departement of Orthopaedics Balgrist Campus, University of Zurich Lengghalde, 8008 Zürich, Switzerland; (D.F.); (A.F.); (S.C.); (W.F.)
- Balgrist University Hospital Forchstrasse 319, 8008 Zürich, Switzerland
| | - Martin Flück
- Laboratory for Muscle Plasticity, Departement of Orthopaedics Balgrist Campus, University of Zurich Lengghalde, 8008 Zürich, Switzerland; (D.F.); (A.F.); (S.C.); (W.F.)
- Balgrist University Hospital Forchstrasse 319, 8008 Zürich, Switzerland
- Correspondence:
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208
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Taipale RS, Forssell J, Ihalainen JK, Kyröläinen H, Häkkinen K. A 10-Week Block of Combined High-Intensity Endurance and Strength Training Produced Similar Changes in Dynamic Strength, Body Composition, and Serum Hormones in Women and Men. Front Sports Act Living 2020; 2:581305. [PMID: 33345149 PMCID: PMC7739745 DOI: 10.3389/fspor.2020.581305] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 08/19/2020] [Indexed: 11/23/2022] Open
Abstract
Purpose: To examine the potential sex differences in adaptations to combined endurance and strength training in recreationally endurance trained (eumenorrheic) women (n = 9) and men (n = 10). Methods: Isometric (ISOMmax) and dynamic bilateral leg press (1RM), countermovement jump (CMJ), running performance (3,000 m time trial), lean mass and body fat % (LEAN and FAT% determined by dual X-ray absorptiometry) as well as serum testosterone and cortisol (TES and COR, respectively, measured using hormone-specific immunoassay kits) were examined before a control period and pre, mid, and post a supervised 10-week combined high-intensity interval endurance training (4 × 4 min intervals and 3 × 3 × 100 m repeated sprints) and mixed maximal and explosive strength training. No more than 2 weeks separated training and testing for either women or men and all women were tested in the early follicular phase of the menstrual cycle to minimize the possible influence of menstrual cycle phase on performance measures. Results: Absolute and relative changes in 1RM, CMJ, 3,000 m, LEAN, and FAT% were similar between groups. The only statistically significant differences observed between groups were observed at post and included a larger Δ% increase in ISOMmax force in men and a relatively greater Δ% decrease in serum TES in women. Conclusion: Women and men can achieve similar relative adaptations in dynamic maximal strength and CMJ as well as endurance performance gains and body composition over the same high-intensity 10-week combined program, although relative adaptations in TES may differ.
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Affiliation(s)
- Ritva S Taipale
- Sports Technology Unit, Faculty of Sport and Health Sciences, University of Jyväskylä, Vuokatti, Finland.,Neuromuscular Research Center, Biology of Physical Activity, Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
| | - Jaakko Forssell
- Neuromuscular Research Center, Biology of Physical Activity, Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
| | - Johanna K Ihalainen
- Neuromuscular Research Center, Biology of Physical Activity, Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
| | - Heikki Kyröläinen
- Neuromuscular Research Center, Biology of Physical Activity, Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
| | - Keijo Häkkinen
- Neuromuscular Research Center, Biology of Physical Activity, Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
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209
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Kim SK, Avila JJ, Massett MP. Interaction of genetic background and exercise training intensity on endothelial function in mouse aorta. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2020; 24:53-68. [PMID: 31908575 PMCID: PMC6940500 DOI: 10.4196/kjpp.2020.24.1.53] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 10/18/2019] [Accepted: 11/07/2019] [Indexed: 01/22/2023]
Abstract
The purpose of this study was to characterize the genetic contribution to endothelial adaptation to exercise training. Vasoreactivity was assessed in aortas from four inbred mouse strains (129S1, B6, NON, and SJL) after 4 weeks of moderate intensity continuous exercise training (MOD), high intensity interval training (HIT) or in sedentary controls (SED). Intrinsic variations in endothelium-dependent vasorelaxation (EDR) to acetylcholine (ACh) as well as vasocontractile responses were observed across SED groups. For responses to exercise training, there was a significant interaction between mouse strain and training intensity on EDR. Exercise training had no effect on EDR in aortas from 129S1 and B6 mice. In NON, EDR was improved in aortas from MOD and HIT compared with respective SED, accompanied by diminished responses to PE in those groups. Interestingly, EDR was impaired in aorta from SJL HIT compared with SED. The transcriptional activation of endothelial genes was also influenced by the interaction between mouse strain and training intensity. The number of genes altered by HIT was greater than MOD, and there was little overlap between genes altered by HIT and MOD. HIT was associated with gene pathways for inflammatory responses. NON MOD genes showed enrichment for vessel growth pathways. These findings indicate that exercise training has non-uniform effects on endothelial function and transcriptional activation of endothelial genes depending on the interaction between genetic background and training intensity.
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Affiliation(s)
- Seung Kyum Kim
- Department of Sports Science, Seoul National University of Science and Technology, Seoul 01811, Korea
| | - Joshua J Avila
- Department of Health and Kinesiology, Texas A&M University, College Station, TX, USA
| | - Michael P Massett
- Department of Health and Kinesiology, Texas A&M University, College Station, TX, USA
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210
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Cardiovascular fitness and health effects of various types of team sports for adult and elderly inactive individuals - a brief narrative review. Prog Cardiovasc Dis 2020; 63:709-722. [PMID: 33328098 DOI: 10.1016/j.pcad.2020.11.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Indexed: 11/24/2022]
Abstract
Recreational team sports offer an alternative form of exercise to inactive individuals across the lifespan and sexes. Soccer is the most investigated recreational team sport reporting a wide range of health benefits, including cardiovascular (CV) health. The quest for novel paradigms to promote exercise in the general population, recently extended its interest to other team sports besides soccer. The available research supports the importance of recreational team handball, floorball, basketball, touch rugby, futsal and volleyball as training paradigms to improve CV fitness and other health-related variables in inactive individuals across ages and sexes. In most cases, recreational team sports programs assume the form of small-sided games, eliciting mean heart rates of 72-85% of the individual maximal. The majority of the training interventions were carried out for 12weeks with a reported mean attendance of 2 times 40-60min per week. Maximal oxygen uptake improvements were different in magnitude across the recreational team sports, with recreational team handball providing significant and clinically relevant increases (>3.5ml·kg-1·min-1). Game format, training exposure and pre-intervention health and fitness status are issues that need further investigation with the aim to optimize recreational team sports exercise programs implementation. Furthermore, the nature and effects of grassroots team sports should be further studied in order to provide as many as possible effective training tools for former practitioners and for the general population that has none or little experience of sport. Given the potential positive impact of recreational team sports practice on world population's health, large-scale randomized controlled trials are warranted.
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211
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Dauty M, Menu P, Fouasson-Chailloux A. Effects of the COVID-19 confinement period on physical conditions in young elite soccer players. J Sports Med Phys Fitness 2020; 61:1252-1257. [PMID: 33269885 DOI: 10.23736/s0022-4707.20.11669-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND The rapid spread of the SARS-CoV-2 infection required general confinement measures reducing or even preventing sport practice, which was a risk of detraining in athletes. In adolescents, detraining is poorly known as well as its prevention by home-exercises. This article aimed to assess the effects of COVID-19 confinement on detraining in young high-level soccer players despite a multimodal training program conducted at home. METHODS Twenty-five elite soccer players, aged 14, were included to perform physical exercises at home during the COVID-19 confinement. Two cardio-training sessions and two upper and lower limb muscle strengthening sessions were performed per week. The exercise program was monitored remotely via the web. Hooper, training and mental indexes allowed a psychological follow-up. The effect of COVID-19 confinement on aerobic capacity was measured using a pre- and postconfinement Yo-Yo Test. RESULTS Out of the 25 adolescences who completed the exercises program, 19 performed the postconfinement Yo-Yo Test. The running distance decreased by 614+/-630 m (-25%) (P=0001) and the maximal running speed by 0.97+/-1 km/h (-5%) (P=0.001), confirming detraining. Hooper, training and mental indexes remained stable showing a well-supported home COVID-19 confinement. CONCLUSIONS The 2-month period of strict home confinement due to the SARS-CoV-2 pandemic was responsible for a decrease of aerobic abilities in adolescent soccer players, despite a remotely monitored multimodal exercises program.
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Affiliation(s)
- Marc Dauty
- Department of Sports Medicine, Pole of Physical Medicine and Rehabilitation, CHU Nantes, Nantes, France.,Department of Physical Medicine and Locomotor and Respiratory Rehabilitation, CHU Nantes, Nantes, France.,Department of Regenerative Medicine and Skeleton (RMeS), Inserm - UMR 1229, ONIRIS, University of Nantes, Nantes, France
| | - Pierre Menu
- Department of Sports Medicine, Pole of Physical Medicine and Rehabilitation, CHU Nantes, Nantes, France.,Department of Physical Medicine and Locomotor and Respiratory Rehabilitation, CHU Nantes, Nantes, France.,Department of Regenerative Medicine and Skeleton (RMeS), Inserm - UMR 1229, ONIRIS, University of Nantes, Nantes, France
| | - Alban Fouasson-Chailloux
- Department of Sports Medicine, Pole of Physical Medicine and Rehabilitation, CHU Nantes, Nantes, France - .,Department of Physical Medicine and Locomotor and Respiratory Rehabilitation, CHU Nantes, Nantes, France.,Department of Regenerative Medicine and Skeleton (RMeS), Inserm - UMR 1229, ONIRIS, University of Nantes, Nantes, France
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212
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Burzynska AZ, Voss MW, Fanning J, Salerno EA, Gothe NP, McAuley E, Kramer AF. Sensor-measured sedentariness and physical activity are differentially related to fluid and crystallized abilities in aging. Psychol Aging 2020; 35:1154-1169. [PMID: 32969693 PMCID: PMC8415093 DOI: 10.1037/pag0000580] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Aerobic exercise and physical activity (PA) are known to benefit cognition in adulthood. However, a typical older adult spends most of the day sedentary or in light PA, behaviors that are typically poorly captured by questionnaires. To better understand the associations between time spent in different intensities of lifestyle PA and cognition, we measured average time spent daily in sedentariness, light, and moderate to vigorous PA using hip-worn sensors (ActiGraph accelerometers). We studied baseline data from 228 cognitively normal adults (Age 60-80) who took part in a clinical trial (clinical study identifier: NCT01472744). Fluid (processing speed, memory, and reasoning) and crystallized abilities (vocabulary knowledge) were assessed with the Virginia Cognitive Aging Battery. Adjusting for age, sex, and several modifiable socioeconomic, physical and functional health factors, time spent daily in moderate to vigorous PA was positively related with fluid abilities (perceptual speed and reasoning). Furthermore, we found that those spending more time sedentary performed better on vocabulary knowledge and reasoning tasks. In contrast, time spent in light PA was not related to either fluid or crystallized abilities. Our results add to the previous literature by providing the first sensor-based evidence that crystallized and fluid abilities in older age may be associated with engagement in different intensities of daily activity. Moreover, our findings suggest that the behavior of moderate to vigorous PA is at least as important in relation to cognition as the desirable long-term physiological effects of higher intensity PA and exercise. (PsycInfo Database Record (c) 2020 APA, all rights reserved).
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Affiliation(s)
- Agnieszka Z Burzynska
- Department of Human Development and Family Studies/Molecular, Cellular and Integrative Neurosciences
| | | | - Jason Fanning
- Department of Internal Medicine and Health and Exercise Sciences
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Nuñez TP, Amorim FT, Beltz NM, Mermier CM, Moriarty TA, Nava RC, VanDusseldorp TA, Kravitz L. Reply to "Programming may matter most." Response to "Metabolic effects of two high-intensity circuit training protocols: Does sequence matter?". J Exerc Sci Fit 2020; 19:49-50. [PMID: 33204282 PMCID: PMC7649493 DOI: 10.1016/j.jesf.2020.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Tony P Nuñez
- Human Performance and Sport, Metropolitan State University of Denver, Denver, CO, USA
| | - Fabiano T Amorim
- Health, Exercise and Sports Sciences, University of New Mexico, Albuquerque, NM, USA
| | - Nicholas M Beltz
- Department of Kinesiology, University of Wisconsin-Eau Claire, Eau Claire, WI, USA
| | - Christine M Mermier
- Health, Exercise and Sports Sciences, University of New Mexico, Albuquerque, NM, USA
| | - Terence A Moriarty
- Department of Kinesiology, University of Northern Iowa, Cedar Falls, IA, USA
| | - Roberto C Nava
- Health, Exercise and Sports Sciences, University of New Mexico, Albuquerque, NM, USA
| | - Trisha A VanDusseldorp
- Department of Exercise Science & Sport Management, Kennesaw State University, Kennesaw, GA, USA
| | - Len Kravitz
- Health, Exercise and Sports Sciences, University of New Mexico, Albuquerque, NM, USA
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214
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Barreto RV, de Lima LCR, Denadai BS. Moving forward with backward pedaling: a review on eccentric cycling. Eur J Appl Physiol 2020; 121:381-407. [PMID: 33180156 DOI: 10.1007/s00421-020-04548-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 10/31/2020] [Indexed: 12/18/2022]
Abstract
PURPOSE There is a profound gap in the understanding of the eccentric cycling intensity continuum, which prevents accurate exercise prescription based on desired physiological responses. This may underestimate the applicability of eccentric cycling for different training purposes. Thus, we aimed to summarize recent research findings and screen for possible new approaches in the prescription and investigation of eccentric cycling. METHOD A search for the most relevant and state-of-the-art literature on eccentric cycling was conducted on the PubMed database. Literature from reference lists was also included when relevant. RESULTS Transversal studies present comparisons between physiological responses to eccentric and concentric cycling, performed at the same absolute power output or metabolic load. Longitudinal studies evaluate responses to eccentric cycling training by comparing them with concentric cycling and resistance training outcomes. Only one study investigated maximal eccentric cycling capacity and there are no investigations on physiological thresholds and/or exercise intensity domains during eccentric cycling. No study investigated different protocols of eccentric cycling training and the chronic effects of different load configurations. CONCLUSION Describing physiological responses to eccentric cycling based on its maximal exercise capacity may be a better way to understand it. The available evidence indicates that clinical populations may benefit from improvements in aerobic power/capacity, exercise tolerance, strength and muscle mass, while healthy and trained individuals may require different eccentric cycling training approaches to benefit from similar improvements. There is limited evidence regarding the mechanisms of acute physiological and chronic adaptive responses to eccentric cycling.
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Affiliation(s)
- Renan Vieira Barreto
- Human Performance Laboratory, Department of Physical Education, São Paulo State University, Rio Claro, São Paulo, Brazil
| | | | - Benedito Sérgio Denadai
- Human Performance Laboratory, Department of Physical Education, São Paulo State University, Rio Claro, São Paulo, Brazil.
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215
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Martínez-Díaz IC, Escobar-Muñoz MC, Carrasco L. Acute Effects of High-Intensity Interval Training on Brain-Derived Neurotrophic Factor, Cortisol and Working Memory in Physical Education College Students. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17218216. [PMID: 33172145 PMCID: PMC7664431 DOI: 10.3390/ijerph17218216] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/24/2020] [Accepted: 11/03/2020] [Indexed: 12/12/2022]
Abstract
High-intensity interval training (HIIT) is considered one of the most effective methods for improving cardiorespiratory and metabolic functions. However, it is necessary to clarify their effects on neurophysiological responses and coginitive functioning. Thus, this study aimed to determine the effects of an acute bout of HIIT on neurocognitive and stress-related biomarkers and their association with working memory (WM) capacity in healthy young adults. Twenty-five male college students performed a single bout of HIIT consisting of 10 × 1 min of cycling at their VO2 peak power output. Plasma Brain-Derived Neurotrophic Factor (BDNF) and cortisol (CORT) levels, and WM (Digit Span Test (DST)), were assessed pre-, post- and 30 min post-intervention. Significant post-exercise increases in circulating BDNF and CORT levels were observed coinciding with the highest DST performance; however, no statistical associations were found between cognitive and neurophysiological variables. Moreover, DST scores obtained 30 min after exercise remained higher than those assessed at pre-exercise. In conclusion, the stress induced by a single bout of HIIT induces a remarkable response of BDNF and CORT boosting WM capacity in healthy young males. Future research should clarify the association between cognitive and neurobiological markers during intense exercise stimulation.
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Affiliation(s)
| | | | - Luis Carrasco
- Department of Physical Education and Sport, University of Seville, E-41013 Seville, Spain;
- Correspondence: ; Tel.: +34-955-420-465
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216
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Støa EM, Helgerud J, Rønnestad BR, Hansen J, Ellefsen S, Støren Ø. Factors Influencing Running Velocity at Lactate Threshold in Male and Female Runners at Different Levels of Performance. Front Physiol 2020; 11:585267. [PMID: 33250778 PMCID: PMC7672120 DOI: 10.3389/fphys.2020.585267] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 10/08/2020] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The primary aim was to examine the relationship between lactate threshold (LT) expressed as percentage of maximal oxygen uptake (VO2max) and running velocity at LT (LTV). A secondary aim was to investigate to what extent VO2max, oxygen cost of running (CR), and maximal aerobic speed (MAS) determined LTV. A third aim was to investigate potential differences in LT and LTV between elite, national and recreational runners, as well as possible gender differences regarding VO2max, CR, LT, and LTV. METHODS Seventy-five competitive runners (37 males and 38 females) with an average VO2max of 63.0 ± 9.3 mL⋅kg-1⋅min-1, and an average LTV of 13.6 ± 2.3 km⋅h-1 were tested for VO2max, LT, LTV, MAS, and CR. RESULTS Lactate threshold did not correlate with LTV. With an r - value of 0.95 (p < 0.001) and a standard error of estimate of 4.0%, the product of MAS and individual LT determined 90% of LTV, outside a range of ±0.27 km⋅h-1. LTV increased with higher performance level. However, LT did not differ between elite, national and recreational runners. Female runners had 2.5% higher LT, 8% lower LTV, and 21% lower VO2max, but 9% better CR than male runners. CONCLUSION Lactate threshold did not correlate with LTV. The product of MAS and LT correlated strongly with LTV. There were no differences between elite, national and recreational runners regarding LT, but female runners had higher LT than the male runners. Female runners at the same relative performance level had lower LTV and VO2max, but better CR than male runners.
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Affiliation(s)
- Eva Maria Støa
- Department of Sports, Physical Education and Outdoor Studies, University of South-Eastern Norway, Bø, Norway
| | - Jan Helgerud
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway
- Myworkout, Medical Rehabilitation Clinic, Trondheim, Norway
| | - Bent R. Rønnestad
- Section for Health and Exercise Physiology, Institute of Public Health and Sport Sciences, Inland Norway University of Applied Sciences, Lillehammer, Norway
| | - Joar Hansen
- Section for Health and Exercise Physiology, Institute of Public Health and Sport Sciences, Inland Norway University of Applied Sciences, Lillehammer, Norway
| | - Stian Ellefsen
- Section for Health and Exercise Physiology, Institute of Public Health and Sport Sciences, Inland Norway University of Applied Sciences, Lillehammer, Norway
| | - Øyvind Støren
- Department of Sports, Physical Education and Outdoor Studies, University of South-Eastern Norway, Bø, Norway
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217
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Andreato LV. High-Intensity Interval Training: Methodological Considerations for Interpreting Results and Conducting Research. Trends Endocrinol Metab 2020; 31:812-817. [PMID: 32967776 DOI: 10.1016/j.tem.2020.08.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 08/17/2020] [Accepted: 08/24/2020] [Indexed: 12/17/2022]
Abstract
In recent years, high-intensity interval training (HIIT) has gained prominence in the health and fitness area, becoming a worldwide trend. Given the positive results of HIIT, researchers have compared it with moderate-intensity continuous training (MICT). However, much of that research has presented methodological challenges. Therefore, the aim of this opinion article is to address an important risk of bias common in research comparing HIIT and MICT: the lack of equalisation among protocols. This limitation can be considered a risk of bias that limits the conclusions of many studies. Thus, it is necessary to achieve the equalisation of sessions in some way such as using equalisation by energy expenditure, by workload performed in the session, or by duration of the session.
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Affiliation(s)
- Leonardo Vidal Andreato
- Sport and Exercise Psychology Laboratory (LAPE), State University of Santa Catarina, Florianópolis, Santa Catarina, Brazil.
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218
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Johansen JM, Goleva-Fjellet S, Sunde A, Gjerløw LE, Skeimo LA, Freberg BI, Sæbø M, Helgerud J, Støren Ø. No Change - No Gain; The Effect of Age, Sex, Selected Genes and Training on Physiological and Performance Adaptations in Cross-Country Skiing. Front Physiol 2020; 11:581339. [PMID: 33192589 PMCID: PMC7649780 DOI: 10.3389/fphys.2020.581339] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 10/02/2020] [Indexed: 01/27/2023] Open
Abstract
The aim was to investigate the effect of training, sex, age and selected genes on physiological and performance variables and adaptations before, and during 6 months of training in well-trained cross-country skiers. National-level cross-country skiers were recruited for a 6 months observational study (pre - post 1 - post 2 test). All participants were tested in an outside double poling time trial (TTDP), maximal oxygen uptake in running (RUN-VO2max), peak oxygen uptake in double poling (DP-VO2peak), lactate threshold (LT) and oxygen cost of double poling (CDP), jump height and maximal strength (1RM) in half squat and pull-down. Blood samples were drawn to genetically screen the participants for the ACTN3 R577X, ACE I/D, PPARGC1A rs8192678, PPARG rs1801282, PPARA rs4253778, ACSL1 rs6552828, and IL6 rs1474347 polymorphisms. The skiers were instructed to train according to their own training programs and report all training in training diaries based on heart rate measures from May to October. 29 skiers completed all testing and registered their training sufficiently throughout the study period. At pre-test, significant sex and age differences were observed in TTDP (p < 0.01), DP-VO2peak (p < 0.01), CDP (p < 0.05), MAS (p < 0.01), LTv (p < 0.01), 1RM half squat (p < 0.01), and 1RM pull-down (p < 0.01). For sex, there was also a significant difference in RUN-VO2max (p < 0.01). No major differences were detected in physiological or performance variables based on genotypes. Total training volume ranged from 357.5 to 1056.8 min per week between participants, with a training intensity distribution of 90-5-5% in low-, moderate- and high-intensity training, respectively. Total training volume and ski-specific training increased significantly (p < 0.05) throughout the study period for the whole group, while the training intensity distribution was maintained. No physiological or performance variables improved during the 6 months of training for the whole group. No differences were observed in training progression or training adaptation between sexes or age-groups. In conclusion, sex and age affected physiological and performance variables, with only a minor impact from selected genes, at baseline. However, minor to no effect of sex, age, selected genes or the participants training were shown on training adaptations. Increased total training volume did not affect physiological and performance variables.
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Affiliation(s)
- Jan-Michael Johansen
- Department of Natural Sciences and Environmental Health, University of South-Eastern Norway, Bø, Norway.,Department of Sports, Physical Education and Outdoor Studies, University of South-Eastern Norway, Bø, Norway
| | - Sannija Goleva-Fjellet
- Department of Natural Sciences and Environmental Health, University of South-Eastern Norway, Bø, Norway
| | - Arnstein Sunde
- Department of Sports, Physical Education and Outdoor Studies, University of South-Eastern Norway, Bø, Norway
| | - Lars Erik Gjerløw
- Department of Sports, Physical Education and Outdoor Studies, University of South-Eastern Norway, Bø, Norway
| | - Lars Arne Skeimo
- Department of Sports, Physical Education and Outdoor Studies, University of South-Eastern Norway, Bø, Norway
| | - Baard I Freberg
- Department of Sports, Physical Education and Outdoor Studies, University of South-Eastern Norway, Bø, Norway.,Landslagslegen.no, Top Sports Medical Office, Tønsberg, Norway.,The Norwegian Biathlon Association, Oslo, Norway
| | - Mona Sæbø
- Department of Natural Sciences and Environmental Health, University of South-Eastern Norway, Bø, Norway
| | - Jan Helgerud
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway.,Myworkout, Medical Rehabilitation Centre, Trondheim, Norway
| | - Øyvind Støren
- Department of Sports, Physical Education and Outdoor Studies, University of South-Eastern Norway, Bø, Norway
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219
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Gabrys T, Stanula A, Szmatlan-Gabrys U, Garnys M, Charvát L, Gupta S. Metabolic and Cardiorespiratory Responses of Semiprofessional Football Players in Repeated Ajax Shuttle Tests and Curved Sprint Tests, and Their Relationship with Football Match Play. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17217745. [PMID: 33113938 PMCID: PMC7660207 DOI: 10.3390/ijerph17217745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 10/19/2020] [Accepted: 10/21/2020] [Indexed: 01/13/2023]
Abstract
In this study, the Ajax Shuttle Test (AST) and the Curved Sprint Test (CST) were conducted on semiprofessional football players to evaluate (1) their test performance, (2) the extent of anaerobic glycolysis by measuring blood lactate, (3) performance decrement and onset of fatigue, and (4) the correlation between selected physiological variables and test performance. Thirty-two semiprofessional Polish football players participated in this study. Both AST and CST were conducted on an outdoor football ground and were conducted in two sets; each set had six repetitions. In the case of AST, the total duration for 6 repetitions of the exercise in Sets 1 and 2 were 90.63 ± 3.71 and 91.65 ± 4.24 s, respectively, whereas, in the case of CST, the respective values were 46.8 ± 0.56 and 47.2 ± 0.66 s. Peak blood lactate concentration [La] after Sets 1 and 2 of AST were 14.47 ± 3.77 and 15.00 ± 1.85 mmol/L, and in the case of CST, the values were 8.17 ± 1.32 and 9.78 ± 1.35 mmol/L, respectively. Performance decrement in AST was more than in CST, both after Set 1 (4.32 ± 1.43 and 3.31 ± 0.96 in AST and CST, respectively) and Set 2 (7.95 ± 3.24 and 3.71 ± 1.02 in AST and CST, respectively). Only in a few of the repetitions, pulmonary ventilation (VE) and oxygen uptake (VO2) were found to be significantly correlated with the performance of the volunteers in both AST and CST. Respiratory exchange ratio (RER) was significantly correlated with most of the repetitions of AST, but not with CST. The study concludes that (1) AST shows more dependence on the anaerobic glycolytic system than shorter repetitive sprints (as in CST), (2) there is more performance decrement and fatigue in AST than in CST, and (3) early decrease in performance and fatigue in the semiprofessional football players in AST and CST may be due to the insufficiency of their aerobic energy system.
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Affiliation(s)
- Tomasz Gabrys
- Department of Physical Education and Sport Science, Faculty of Pedagogy, University of West Bohemia, 301 00 Pilsen, Czech Republic; (T.G.); (L.C.)
| | - Arkadiusz Stanula
- Institute of Sport Science, The Jerzy Kukuczka Academy of Physical Education, Mikołowska 72A, 40-065 Katowice, Poland
- Correspondence: ; Tel.: +48-207-53-33
| | - Urszula Szmatlan-Gabrys
- Department of Anatomy, Faculty of Rehabilitation, University of Physical Education, 31-571 Krakow, Poland;
| | - Michal Garnys
- 4Sport Lab, Laboratory of Physical Preparation, 00-951 Warsaw, Poland;
| | - Luboš Charvát
- Department of Physical Education and Sport Science, Faculty of Pedagogy, University of West Bohemia, 301 00 Pilsen, Czech Republic; (T.G.); (L.C.)
| | - Subir Gupta
- Faculty of Medical Sciences, University of West Indies, Cave Hill 11000, Barbados;
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220
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Perween S, Hussain M, Hejazi I, Siddiqui M, Saif A, Parveen A. Comparison of sprint training and high intensity interval training on oxidative stress and aerobic capacity in male soccer players. COMPARATIVE EXERCISE PHYSIOLOGY 2020. [DOI: 10.3920/cep190078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The study compared the two popular modes of training: repeated sprint and interval, in terms of oxidative load and aerobic capacity. 20 male collegiate soccer players were assigned into either a repeated sprint training (RST) or high intensity interval training (HIIT) group. Training protocols were for a period of 4 weeks (3 times/week). Serum levels of superoxide dismutase, catalase and glutathione, in addition to maximal oxygen uptake and maximum voluntary isometric contraction for quadriceps and hamstrings were measured before training and within 24 h after the completion of training. Significant improvement (P≤0.05) in antioxidant defence response and leg strength was seen in both groups. However, improvement in aerobic capacity was non-significant in RST as compared to HIIT. These findings indicate that both RST and HIIT can be used as a conditioning exercise to alleviate exercise-induced oxidative stress in the competition phase in addition to improvement in aerobic capacity.
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Affiliation(s)
- S. Perween
- Department of Physiology, Centre for Physiotherapy and Rehabilitation sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - M.E. Hussain
- Department of Physiology, Centre for Physiotherapy and Rehabilitation sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - I.I. Hejazi
- Department of Biochemistry, Centre for Physiotherapy and Rehabilitation sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - M.Y.S. Siddiqui
- Department of Surgery, Faculty of Dentistry, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - A. Saif
- Department of Physiology, Centre for Physiotherapy and Rehabilitation sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - A. Parveen
- Department of Physiology, Centre for Physiotherapy and Rehabilitation sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
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221
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Exercise as a Therapeutic Strategy for Sarcopenia in Heart Failure: Insights into Underlying Mechanisms. Cells 2020; 9:cells9102284. [PMID: 33066240 PMCID: PMC7602002 DOI: 10.3390/cells9102284] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/06/2020] [Accepted: 10/10/2020] [Indexed: 12/16/2022] Open
Abstract
Sarcopenia, a syndrome commonly seen in elderly populations, is often characterized by a gradual loss of skeletal muscle, leading to the decline of muscle strength and physical performance. Growing evidence suggests that the prevalence of sarcopenia increases in patients with heart failure (HF), which is a dominant pathogenesis in the aging heart. HF causes diverse metabolic complications that may result in sarcopenia. Therefore, sarcopenia may act as a strong predictor of frailty, disability, and mortality associated with HF. Currently, standard treatments for slowing muscle loss in patients with HF are not available. Therefore, here, we review the pathophysiological mechanisms underlying sarcopenia in HF as well as current knowledge regarding the beneficial effects of exercise on sarcopenia in HF and related mechanisms, including hormonal changes, myostatin, oxidative stress, inflammation, apoptosis, autophagy, the ubiquitin-proteasome system, and insulin resistance.
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222
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Soplinska A, Zareba L, Wicik Z, Eyileten C, Jakubik D, Siller-Matula JM, De Rosa S, Malek LA, Postula M. MicroRNAs as Biomarkers of Systemic Changes in Response to Endurance Exercise-A Comprehensive Review. Diagnostics (Basel) 2020; 10:diagnostics10100813. [PMID: 33066215 PMCID: PMC7602033 DOI: 10.3390/diagnostics10100813] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/08/2020] [Accepted: 10/09/2020] [Indexed: 12/17/2022] Open
Abstract
Endurance sports have an unarguably beneficial influence on cardiovascular health and general fitness. Regular physical activity is considered one of the most powerful tools in the prevention of cardiovascular disease. MicroRNAs are small particles that regulate the post-transcription gene expression. Previous studies have shown that miRNAs might be promising biomarkers of the systemic changes in response to exercise, before they can be detected by standard imaging or laboratory methods. In this review, we focused on four important physiological processes involved in adaptive changes to various endurance exercises (namely, cardiac hypertrophy, cardiac myocyte damage, fibrosis, and inflammation). Moreover, we discussed miRNAs’ correlation with cardiopulmonary fitness parameter (VO2max). After a detailed literature search, we found that miR-1, miR-133, miR-21, and miR-155 are crucial in adaptive response to exercise.
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Affiliation(s)
- Aleksandra Soplinska
- Center for Preclinical Research and Technology CEPT, Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, 02-097 Warsaw, Poland; (A.S.); (L.Z.); (Z.W.); (C.E.); (D.J.); (J.M.S.-M.)
| | - Lukasz Zareba
- Center for Preclinical Research and Technology CEPT, Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, 02-097 Warsaw, Poland; (A.S.); (L.Z.); (Z.W.); (C.E.); (D.J.); (J.M.S.-M.)
| | - Zofia Wicik
- Center for Preclinical Research and Technology CEPT, Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, 02-097 Warsaw, Poland; (A.S.); (L.Z.); (Z.W.); (C.E.); (D.J.); (J.M.S.-M.)
- Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, São Paulo 055080-90, Brazil
| | - Ceren Eyileten
- Center for Preclinical Research and Technology CEPT, Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, 02-097 Warsaw, Poland; (A.S.); (L.Z.); (Z.W.); (C.E.); (D.J.); (J.M.S.-M.)
| | - Daniel Jakubik
- Center for Preclinical Research and Technology CEPT, Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, 02-097 Warsaw, Poland; (A.S.); (L.Z.); (Z.W.); (C.E.); (D.J.); (J.M.S.-M.)
| | - Jolanta M. Siller-Matula
- Center for Preclinical Research and Technology CEPT, Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, 02-097 Warsaw, Poland; (A.S.); (L.Z.); (Z.W.); (C.E.); (D.J.); (J.M.S.-M.)
- Department of Cardiology, Medical University of Vienna, 1090 Vienna, Austria
| | - Salvatore De Rosa
- Division of Cardiology, Department of Medical and Surgical Sciences, “Magna Graecia” University, 88100 Catanzaro, Italy;
| | - Lukasz A. Malek
- Department of Epidemiology, Cardiovascular Disease Prevention and Health Promotion, National Institute of Cardiology, 04-635 Warsaw, Poland;
| | - Marek Postula
- Center for Preclinical Research and Technology CEPT, Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, 02-097 Warsaw, Poland; (A.S.); (L.Z.); (Z.W.); (C.E.); (D.J.); (J.M.S.-M.)
- Longevity Center, 00-761 Warsaw, Poland
- Correspondence: ; Tel.: +48-221166160; Fax: +48-221166202
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Bonato M, La Torre A, Saresella M, Marventano I, Merati G, Banfi G, Vitale JA. Effect of High-Intensity Interval Training Versus Small-Sided Games Training on Sleep and Salivary Cortisol Level. Int J Sports Physiol Perform 2020; 15:1237-1244. [PMID: 32871556 DOI: 10.1123/ijspp.2019-0498] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 12/10/2019] [Accepted: 12/12/2019] [Indexed: 11/18/2022]
Abstract
PURPOSE The authors compared sleep quality and salivary cortisol concentration after high-intensity interval training (HIIT) and small-sided games (SSGs) performed at the habitual training time in nonprofessional male soccer players. METHODS A total of 32 players (age = 24 [6] y, height = 1.77 [0.06] m, and body mass = 75 [12] kg) were randomized into an HIIT group or an SSG group. Actual sleep time, sleep efficiency (SE), sleep latency, immobility time (IT), moving time (MT), and fragmentation index were monitored using actigraphy before (PRE) and 2 nights after (POST 1 and POST 2) the training session. Salivary cortisol levels were measured before (PRE) and after (POST) training. Cortisol awakening response was evaluated. RESULTS Significant intragroup differences in the HIIT group were noted for actual sleep time (P < .0001), SE (P < .0001), sleep latency (P = .047), IT (P < .0001), MT (P < .0001), and fragmentation index (P < .0001) between PRE and POST 1 and for SE (P = .035), IT (P = .004), MT (P = .006), and fragmentation index (P = .048) between PRE and POST 2. Intergroup differences for actual sleep time (P = .014), SE (P = .048), IT (P < .0001), and MT (P = .046) were observed between the HIIT and the SSGs group at POST 1 were detected. Significant intragroup variations were observed in PRE and POST salivary cortisol levels (P < .0001 for HIIT; P = .0003 for SSGs) and cortisol awakening response (P < .0001 for HIIT; P < .0001 for SSGs). Significant intergroup differences between the HIIT and the SSGs group were found at POST (P < .0001) and in cortisol awakening response (P = .017). CONCLUSIONS Changes in actigraphy-based sleep parameters and salivary cortisol levels were greater after an acute session of HIIT than SSGs in this sample of nonprofessional male soccer players.
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Gripp F, Nava RC, Cassilhas RC, Esteves EA, Magalhães COD, Dias-Peixoto MF, de Castro Magalhães F, Amorim FT. HIIT is superior than MICT on cardiometabolic health during training and detraining. Eur J Appl Physiol 2020; 121:159-172. [PMID: 33000332 DOI: 10.1007/s00421-020-04502-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 09/10/2020] [Indexed: 01/13/2023]
Abstract
PURPOSE This study investigated the cardiometabolic health of overweight/obese untrained individuals in response to 8 weeks of HIIT and MICT using a field approach, and to 4 weeks of training cessation (TC). METHODS Twenty-two subjects performed 8 weeks of moderate intensity continuous training (MICT-n = 11) or high-intensity interval training (HIIT-n = 11) (outdoor running), followed by 4 weeks of TC. Cardiorespiratory fitness, body composition, arterial blood pressure, glucose metabolism and blood lipids were measured pre-training (PRE), post-training (POST) and TC. RESULTS HIIT improved eight indicators of cardiometabolic health ([Formula: see text], BMI, body fat, visceral fat, systolic blood pressure, total cholesterol, fasting glucose and triglycerides-p < 0.05) while MICT only three ([Formula: see text], BMI, and visceral fat-p < 0.05). After 4 weeks of TC, four positive adaptations from HIIT were negatively affected ( [Formula: see text], visceral fat, systolic blood pressure and total cholesterol-p < 0.05) and three in the MICT group ([Formula: see text], BMI and visceral fat, p < 0.05). CONCLUSION Eight weeks of HIIT performed in a real-world setting promoted a greater number of positive adaptations in cardiometabolic health of individuals with overweight/obese compared to MICT. Most of the positive effects of the HIIT protocol were also found to be longer lasting and maintained after the suspension of high-intensity interval running for 4 weeks. Conversely, all positive effects of MICT protocols were reversed after TC.
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Affiliation(s)
- Fernando Gripp
- Multicenter Graduate Program in Physiological Sciences, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil.,Departament of Physical Education, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil
| | - Roberto Carlos Nava
- Department of Health, Exercise, and Sports Sciences, Johnson Center B145 MSC04 2610, University of New Mexico, Albuquerque, NM, 87131-0001, USA
| | - Ricardo Cardoso Cassilhas
- Multicenter Graduate Program in Physiological Sciences, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil.,Departament of Physical Education, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil
| | - Elizabethe Adriana Esteves
- Multicenter Graduate Program in Physiological Sciences, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil.,Departamento of Nutrition, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil
| | - Caíque Olegário Diniz Magalhães
- Multicenter Graduate Program in Physiological Sciences, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil.,Departament of Physical Education, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil
| | - Marco Fabrício Dias-Peixoto
- Multicenter Graduate Program in Physiological Sciences, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil.,Departament of Physical Education, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil
| | - Flávio de Castro Magalhães
- Multicenter Graduate Program in Physiological Sciences, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil.,Department of Health, Exercise, and Sports Sciences, Johnson Center B145 MSC04 2610, University of New Mexico, Albuquerque, NM, 87131-0001, USA.,Departament of Physical Education, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil
| | - Fabiano Trigueiro Amorim
- Multicenter Graduate Program in Physiological Sciences, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil. .,Department of Health, Exercise, and Sports Sciences, Johnson Center B145 MSC04 2610, University of New Mexico, Albuquerque, NM, 87131-0001, USA. .,Departament of Physical Education, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil.
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225
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Berg J, Wang AI, Lydersen S, Moholdt T. Can Gaming Get You Fit? Front Physiol 2020; 11:1017. [PMID: 32973553 PMCID: PMC7468464 DOI: 10.3389/fphys.2020.01017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 07/24/2020] [Indexed: 12/02/2022] Open
Abstract
Rationale Exergaming may be a viable alternative to more traditional exercise. As high-intensity exercise can provide substantial health benefits, the purpose of this study was to investigate the long-term effectiveness of providing inactive adults with access to a high-intensity exergaming platform. Methods In this study, 52 inactive adults (<150 min of exercise per week), aged 18 years or older, were randomized (1:1) into an exergaming (N = 27) or a control group (N = 25). Exergaming participants were given access to the Playpulse exergaming platform for 6 months, where they decided how frequently they wanted to use the platform. The primary outcome measure, analyzed with a mixed model, was peak oxygen uptake (V̇O2peak). Secondary outcomes included body composition, blood pressure, and blood markers of cardiometabolic health. Results Mean V̇O2peak at 6 months was 42.3 (SD 7.0) mL⋅kg−1⋅min−1 and 41.9 (SD 7.4) mL⋅kg−1⋅min−1 for the exergaming and control group, respectively with no significant between-group differences (-0.7, 95% CI -2.7 to 1.3, P = 0.49). Apart from increased moderate-intensity physical activity in the exergaming group at 3 months (21.9 min⋅day−1, 95% CI: 2.2 to 41.5, P = 0.03) compared to the control group, there were no significant between-group differences for any outcome at either 3 or 6 months. On average, participants in the exergaming group performed 12 (SD 13) exergaming sessions with an average heart rate of 74.5 (SD 7.5)% of maximum heart rate, throughout the intervention. Conclusion Due to low exergaming frequency over the 6-month intervention, exergaming participants showed no significant health benefits compared to control. Our study indicates that although the Playpulse exergaming platform is found enjoyable, this is not enough to motivate inactive adults to regularly engage in exercise and thereby improve health. Clinical Trial Registration www.clinicaltrials.gov, identifier NCT03513380.
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Affiliation(s)
- Jonathan Berg
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway.,St. Olav's University Hospital, Trondheim, Norway
| | - Alf Inge Wang
- Department of Computer Science, Norwegian University of Science and Technology, Trondheim, Norway
| | - Stian Lydersen
- Regional Centre for Child and Youth Mental Health and Child Welfare, Norwegian University of Science and Technology, Trondheim, Norway
| | - Trine Moholdt
- Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway.,St. Olav's University Hospital, Trondheim, Norway
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226
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High-Intensity Interval Training Is Effective at Increasing Exercise Endurance Capacity and Is Well Tolerated by Adults with Cystic Fibrosis. J Clin Med 2020; 9:jcm9103098. [PMID: 32992871 PMCID: PMC7601335 DOI: 10.3390/jcm9103098] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 09/21/2020] [Accepted: 09/24/2020] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND To optimize outcomes in people with cystic fibrosis (CF), guidelines recommend 30 to 60 min of moderate-intensity aerobic exercise on most days. Accumulating this volume of exercise contributes importantly to the substantial treatment burden associated with CF. Therefore, the main aim of this study was to investigate the effects of low-volume high-intensity interval training (HIIT) on exercise capacity in people with CF. METHODS This randomized controlled trial included people with CF aged ≥15 years, who were allocated to either eight weeks of thrice-weekly 10-min sessions of HIIT (experimental group) or eight weeks of weekly contact (control group). Before and after the intervention period, participants completed measurements of time to symptom limitation (Tlim) during a constant work rate cycle ergometry test (primary outcome), and maximal work rate (Wmax) during a ramp-based cycle ergometry test and health-related quality of life (HRQoL). RESULTS Fourteen participants (median (IQR) age 31 (28, 35) years, forced expiratory volume in 1 second (FEV1) 61 (45, 80) % predicted) were included (seven in each group). Compared to the control group, participants in the experimental group demonstrated a greater magnitude of change in Tlim, Wmax (p = 0.017 for both) and in the physical function domain of HRQoL (p = 0.03). No other between-group differences were demonstrated. Mild post-exercise muscle soreness was reported on a single occasion by four participants. Overall, participants attended 93% of all HIIT sessions. DISCUSSION Eight weeks of low-volume (i.e., 30-min/week) HIIT produced gains in exercise capacity and self-reported physical function and was well tolerated by people with CF.
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227
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High-Intensity Interval Training versus Moderate-Intensity Continuous Training on Health Outcomes for Children and Adolescents: A Meta-analysis of Randomized Controlled Trials. BIOMED RESEARCH INTERNATIONAL 2020. [DOI: 10.1155/2020/9797439] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Low cardiorespiratory fitness (CRF) is considered as an established risk factor for cardiovascular and metabolic disorders. However, the effectiveness of high-intensity interval training (HIIT) versus moderate-intensity continuous training (MICT) in children and adolescents remained uncertain. Electronic databases of the PubMed, EmBase, and the Cochrane library were searched for randomized controlled trials (RCTs) investigated the role of HIIT versus MICT for children and adolescents throughout December 2019. Sixteen RCTs involving a total of 543 children were selected for final meta-analysis. HIIT versus MICT showed high peak VO2 (weighted mean differences (WMD): 2.68; 95% confidence intervals (CIs): 1.81 to 3.55;
), and no evidence of heterogeneity and publication bias was detected. However, there were no significant differences detected between HIIT and MICT on the levels of peak heart rate (HRmax), fat mass, free fat mass, weight, body mass index, waist circumference, systolic blood pressure, diastolic blood pressure, glycemia, insulinemia, total cholesterol, high density lipoprotein, low density lipoprotein, triglycerides, HOMA-IR, HbA1c, and leptinemia. The findings of this study revealed that HIIT versus MICT showed a significant improvement in peak VO2 in children and adolescents. Further large-scale RCTs should be conducted to compare the long-term effects of HIIT versus MICT in children and adolescents.
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228
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Role of Muscle-Specific Histone Methyltransferase (Smyd1) in Exercise-Induced Cardioprotection against Pathological Remodeling after Myocardial Infarction. Int J Mol Sci 2020; 21:ijms21197010. [PMID: 32977624 PMCID: PMC7582695 DOI: 10.3390/ijms21197010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 09/07/2020] [Accepted: 09/21/2020] [Indexed: 12/18/2022] Open
Abstract
Pathological remodeling is the main detrimental complication after myocardial infarction (MI). Overproduction of reactive oxygen species (ROS) in infarcted myocardium may contribute to this process. Adequate exercise training after MI may reduce oxidative stress-induced cardiac tissue damage and remodeling. SET and MYND domain containing 1 (Smyd1) is a muscle-specific histone methyltransferase which is upregulated by resistance training, may strengthen sarcomere assembly and myofiber folding, and may promote skeletal muscles growth and hypertrophy. However, it remains elusive if Smyd1 has similar functions in post-MI cardiac muscle and participates in exercise-induced cardioprotection. Accordingly, we investigated the effects of interval treadmill exercise on cardiac function, ROS generation, Smyd1 expression, and sarcomere assembly of F-actin in normal and infarcted hearts. Adult male rats were randomly divided into five groups (n = 10/group): control (C), exercise alone (EX), sham-operated (S), MI induced by permanent ligation of left anterior descending coronary artery (MI), and MI with interval exercise training (MI + EX). Exercise training significantly improved post-MI cardiac function and sarcomere assembly of F-actin. The cardioprotective effects were associated with increased Smyd1, Trx1, cTnI, and α-actinin expression as well as upregulated ratio of phosphorylated AMP-activated protein kinase (AMPK)/AMPK, whereas Hsp90, MuRF1, brain natriuretic peptide (BNP) expression, ROS generation, and myocardial fibrosis were attenuated. The improved post-MI cardiac function was associated with increased Smyd1 expression. In cultured H9C2 cardiomyoblasts, in vitro treatment with H2O2 (50 µmol/L) or AMP-activated protein kinase (AMPK) agonist (AICAR, 1 mmol/L) or their combination for 4 h simulated the effects of exercise on levels of ROS and Smyd1. In conclusion, we demonstrated a novel role of Smyd1 in association with post-MI exercise-induced cardioprotection. The moderate level of ROS-induced upregulation of Smyd1 may be an important target for modulating post-MI cardiac function and remodeling.
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229
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Bradbury DG, Landers GJ, Benjanuvatra N, Goods PSR. Comparison of Linear and Reverse Linear Periodized Programs With Equated Volume and Intensity for Endurance Running Performance. J Strength Cond Res 2020; 34:1345-1353. [PMID: 30161090 DOI: 10.1519/jsc.0000000000002805] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Bradbury, DG, Landers, GJ, Benjanuvatra, N, and Goods, PS. Comparison of linear and reverse linear periodized programs with equated volume and intensity for endurance running performance. J Strength Cond Res 34(5): 1345-1353, 2020-This investigation examined the effectiveness of 2 periodization methods on endurance running performance. Thirty recreational runners (25.2 ± 7.4 years; 175.4 ± 8.1 cm; 69.0 ± 9.8 kg) were assigned to 3 groups based on preintervention test results: linear periodization group (LPG, n = 10), reverse linear periodization group (RPG, n = 10), and control group (CG, n = 10). The LPG and RPG completed 3 training sessions (2 supervised and 1 unsupervised) per week in two 6-week blocks. The LPG went through a high-volume training program while the RPG performed higher intensity, lower volume training in the initial block. Training volume and intensity was reversed in the second 6-week training block. All subjects completed pre-training (week 0), midpoint (week 7), and post-training (week 14) testing, which included anthropometric measurements (body mass and sum of 8 skinfolds), treadmill tests for running economy (RE) and V[Combining Dot Above]O2max, and a 5,000-m time trial (TT) on a 400-m grass track. Greater improvements in the 5,000-m TT were observed in the LPG (76.8 ± 55.8 seconds, p = 0.009, d = 1.27) and the RPG (112.8 ± 83.4 seconds, p = 0.002, d = 1.51) than the CG (3.6 ± 59 seconds). No significant differences were found between the LPG and RPG (p = 0.321, d = 0.51). No group differences were found for V[Combining Dot Above]O2peak (p = 0.955) or RE at 9 km·h (p = 0.329) or 11 km·h (p = 0.558), respectively. However, significant improvements were seen in these variables after training: V[Combining Dot Above]O2peak (p = 0.010), RE 9 km·h (p < 0.001), and RE 11 km·h (p = 0.004). These results do not support linear periodization or reverse linear periodization as a superior method; however, periodized training elicited greater improvements in endurance performance than nonperiodized training, highlighting the importance of planned training structure.
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Affiliation(s)
- Duncan G Bradbury
- School of Human Sciences (Sport Science), University of Western Australia, Perth, Australia; and
| | - Grant J Landers
- School of Human Sciences (Sport Science), University of Western Australia, Perth, Australia; and
| | - Nat Benjanuvatra
- School of Human Sciences (Sport Science), University of Western Australia, Perth, Australia; and
| | - Paul S R Goods
- School of Human Sciences (Sport Science), University of Western Australia, Perth, Australia; and.,Western Australian Institute of Sport, Mount Claremont, Australia
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230
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Quantifying trunk neuromuscular control using seated balancing and stability threshold. J Biomech 2020; 112:110038. [PMID: 32961424 DOI: 10.1016/j.jbiomech.2020.110038] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 08/24/2020] [Accepted: 09/01/2020] [Indexed: 11/24/2022]
Abstract
Performance during seated balancing is often used to assess trunk neuromuscular control, including evaluating impairments in back pain populations. Balancing in less challenging environments allows for flexibility in control, which may not depend on health status but instead may reflect personal preferences. To make assessment less ambiguous, trunk neuromuscular control should be maximally challenged. Thirty-four healthy subjects balanced on a robotic seat capable of adjusting rotational stiffness. Subjects balanced while rotational stiffness was gradually reduced. The rotational stiffness at which subjects could no longer maintain balance, defined as critical stiffness (kCrit), was used to quantify the subjects' trunk neuromuscular control. A higher kCrit reflects poorer control, as subjects require a more stable base to balance. Subjects were tested on three days separated by 24 hours to assess test-retest reliability. Anthropometric (height and weight) and demographic (age and sex) influences on kCrit and its reliability were assessed. Height and age did not affect kCrit; whereas, being heavier (p < 0.001) and female (p = 0.042) significantly increased kCrit. Reliability was also affected by anthropometric and demographic factors, highlighting the potential problem of inflated reliability estimates from non-control related attributes. kCrit measurements appear reliable even after removing anthropometric and demographic influences, with adjusted correlations of 0.612 (95%CI: 0.433-0.766) versus unadjusted correlations of 0.880 (95%CI: 0.797-0.932). Besides assessment, trainers and therapists prescribing exercise could use the seated balance task and kCrit to precisely set difficulty level to a percentage of the subject's stability threshold to optimize improvements in trunk neuromuscular control and spine health.
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231
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Brobakken MF, Nygård M, Güzey IC, Morken G, Reitan SK, Heggelund J, Vedul-Kjelsaas E, Wang E. One-year aerobic interval training in outpatients with schizophrenia: A randomized controlled trial. Scand J Med Sci Sports 2020; 30:2420-2436. [PMID: 33108030 DOI: 10.1111/sms.13808] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 08/03/2020] [Accepted: 08/11/2020] [Indexed: 12/25/2022]
Abstract
Although aerobic interval training (AIT) is recognized to attenuate the risk of cardiovascular disease (CVD) and premature mortality, it appears that it rarely arrives at patients' doorsteps. Thus, this study investigated 1-year effects and feasibility of AIT delivered with adherence support in collaborative care of outpatients with schizophrenia. Forty-eight outpatients (28 men, 35 [31-38] (mean [95% confidence intervals]) years; 20 women, 36 [30-41] years) with schizophrenia spectrum disorders (ICD-10) were randomized to either a collaborative care group provided with municipal transportation service and training supervision (walking/running 4 × 4 minutes at ~90% of peak heart rate; HRpeak ) 2 d wk-1 at the clinic (TG) or a control group (CG) given 2 introductory AIT sessions and advised to continue training. Directly assessed peak oxygen uptake ( V ˙ O 2 peak ) increased in the TG after 3 months (2.3 [0.6-4.4] mL kg-1 min-1 , Cohen's d = 0.33[-4.63 to 4.30], P = 0.04), 6 months (2.7 [0.5-4.8] mL kg-1 min-1 , Cohen's d = 0.42[-4.73 to 4.11], P = 0.02) and 1 year (4.6 [2.3-6.8] mL kg-1 min-1 , Cohen's d = 0.70[-4.31 to 4.10], P < 0.001) compared to the CG. One-year cardiac effects revealed higher HRpeak (7 [2-11] b min-1 , Cohen's d = 0.34[-8.48 to 8.65], P = 0.01), while peak stroke volume tended to be higher (0.9 [-0.2 to 2.0] mL b-1 , Cohen's d = 0.35[-1.62 to 2.01], P = 0.11) in the TG compared to the CG. Conventional risk factors (body weight, waist circumference, blood pressure, and lipids/glucose) remained unaltered in both groups. One-year AIT adherence rates were 15/25 (TG; different from CG: P < 0.001) and 0/23 (CG). AIT was successfully included in long-term collaborative care of outpatients with schizophrenia and yielded improved V ˙ O 2 peak , advocating this model for aerobic capacity improvement and CVD risk reduction in future treatment.
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Affiliation(s)
- Mathias Forsberg Brobakken
- Department of Mental Health, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.,Department of Østmarka, Division of Mental Health Care, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Mona Nygård
- Department of Mental Health, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.,Department of Østmarka, Division of Mental Health Care, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Ismail Cüneyt Güzey
- Department of Mental Health, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.,Department of Research and Development, Division of Mental Health Care, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Gunnar Morken
- Department of Mental Health, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.,Department of Østmarka, Division of Mental Health Care, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Solveig Klaebo Reitan
- Department of Mental Health, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.,Department of Research and Development, Division of Mental Health Care, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Jørn Heggelund
- Department of Mental Health, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.,Regional Centre for Healthcare Improvement, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Einar Vedul-Kjelsaas
- Department of Mental Health, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.,Department of Research and Development, Division of Mental Health Care, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Eivind Wang
- Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.,Faculty of Health and Social Sciences, Molde University College, Molde, Norway.,Department of Internal Medicine, University of Utah, Salt Lake City, UT, USA
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232
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Valenzuela PL, Castillo-García A, Morales JS, de la Villa P, Hampel H, Emanuele E, Lista S, Lucia A. Exercise benefits on Alzheimer's disease: State-of-the-science. Ageing Res Rev 2020; 62:101108. [PMID: 32561386 DOI: 10.1016/j.arr.2020.101108] [Citation(s) in RCA: 156] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 05/29/2020] [Accepted: 06/06/2020] [Indexed: 01/15/2023]
Abstract
Although there is no unanimity, growing evidence supports the value of regular physical exercise to prevent Alzheimer's disease as well as cognitive decline in affected patients. Together with an introductory summary on epidemiological evidence, the aim of this review is to summarize the current knowledge on the potential biological mechanisms underlying exercise benefits in this condition. Regular physical exercise has proven to be beneficial for traditional cardiovascular risk factors (e.g., reduced vascular flow, diabetes) involved in the pathogenesis of Alzheimer's disease. Exercise also promotes neurogenesis via increases in exercise-induced metabolic factors (e.g., ketone bodies, lactate) and muscle-derived myokines (cathepsin-B, irisin), which in turn stimulate the production of neurotrophins such as brain-derived neurotrophic factor. Finally, regular exercise exerts anti-inflammatory effects and improves the brain redox status, thereby ameliorating the pathophysiological hallmarks of Alzheimer's disease (e.g., amyloid-β deposition). In summary, physical exercise might provide numerous benefits through different pathways that might, in turn, help prevent risk and progression of Alzheimer's disease. More evidence is needed, however, based on human studies.
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233
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Ferreira GA, Felippe LC, Silva-Cavalcante MD, De-Mello APA, Coelho DB, Maranhão R, Bertuzzi R, Dolinsky M, De-Oliveira FR, Lima-Silva AE, Da-Silva KJ. Maytenus ilicifolia Extract Increases Oxygen Uptake without Changes in Neuromuscular Fatigue Development during a High-Intensity Interval Exercise. J Am Coll Nutr 2020; 40:419-428. [PMID: 32790496 DOI: 10.1080/07315724.2020.1787906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVE We investigated the effects of acute ingestion of Maytenus ilicifolia extract on metabolic and cardiopulmonary responses during a high-intensity interval exercise (HIIE), and its consequence on neuromuscular fatigue. METHODS Ten healthy men underwent a HIIE (4 x 4 min, 3 min recovery) one hour after ingesting 400 mg of Maytenus ilicifolia extract (MIE) or placebo. Oxygen uptake (V̇O2), dioxide carbon production (V̇CO2), ventilation (V̇E) and heart rate (HR) were measured throughout the HIIE. Maximal voluntary contraction (MVC), voluntary activation (VA), and evoked 1, 10 and 100 Hz force twitch were measured before supplementation (baseline), and before (pre-HIIE) and after the HIIE (post-HIIE). RESULTS The V̇O2, V̇E, V̇E/V̇O2 ratio and HR increased progressively throughout the HIIE under both conditions (p < 0.05). MIE increased HR, however, at bouts 1 and 2 and mean V̇O2 during HIIE. The mean respiratory exchange ratio during recovery was also reduced with MIE (p < 0.05). MVC and evoked force at 1, 10 and 100 Hz declined similarly after HIIE, regardless of the condition (MIE: -18 ± 17%, -50 ± 15%, -61 ± 13% and -34 ± 10% vs. placebo: -19 ± 15%, -48 ± 16%, -58 ± 12 and -29 ± 11%, respectively, p < 0.05). There was no effect of exercise or MIE on VA (p > 0.05). CONCLUSION MIE increases heart rate in the first bouts and mean oxygen uptake during HIIE without changes in neuromuscular fatigue development.
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Affiliation(s)
- Guilherme A Ferreira
- Associated Program of Post-Graduation in Physical Education UPE/UFPB, University of Pernambuco, Recife, Brazil.,Sports Science Research Group, Academic Center of Vitoria, Federal University of Pernambuco, Pernambuco, Brazil.,Human Performance Research Group, Federal University of Technology - Parana (UTFPR), Curitiba, Brazil
| | - Leandro C Felippe
- Sports Science Research Group, Academic Center of Vitoria, Federal University of Pernambuco, Pernambuco, Brazil.,Human Performance Research Group, Federal University of Technology - Parana (UTFPR), Curitiba, Brazil
| | - Marcos D Silva-Cavalcante
- Sports Science Research Group, Academic Center of Vitoria, Federal University of Pernambuco, Pernambuco, Brazil.,Human Performance Research Group, Federal University of Technology - Parana (UTFPR), Curitiba, Brazil
| | - Ana Paula A De-Mello
- Sports Science Research Group, Academic Center of Vitoria, Federal University of Pernambuco, Pernambuco, Brazil
| | - Daniel B Coelho
- Center of Engineering, Modeling, and Applied Social Science, Federal University of ABC, São Paulo, São Paulo, Brazil
| | - Renato Maranhão
- Sports Science Research Group, Academic Center of Vitoria, Federal University of Pernambuco, Pernambuco, Brazil
| | - Rômulo Bertuzzi
- Endurance Performance Research Group (GEDAE-USP), University of São Paulo, São Paulo, Brazil
| | - Manuela Dolinsky
- Departament of Nutrition and Dietetic, Federal Fluminense University, Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Adriano E Lima-Silva
- Sports Science Research Group, Academic Center of Vitoria, Federal University of Pernambuco, Pernambuco, Brazil.,Human Performance Research Group, Federal University of Technology - Parana (UTFPR), Curitiba, Brazil
| | - Kleber J Da-Silva
- Sports Science Research Group, Academic Center of Vitoria, Federal University of Pernambuco, Pernambuco, Brazil.,Human Performance Research Group, Federal University of Technology - Parana (UTFPR), Curitiba, Brazil
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234
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Krusnauskas R, Eimantas N, Baranauskiene N, Venckunas T, Snieckus A, Brazaitis M, Westerblad H, Kamandulis S. Response to Three Weeks of Sprint Interval Training Cannot Be Explained by the Exertional Level. ACTA ACUST UNITED AC 2020; 56:medicina56080395. [PMID: 32784754 PMCID: PMC7466197 DOI: 10.3390/medicina56080395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 08/04/2020] [Indexed: 01/13/2023]
Abstract
Background and Objectives: The all-out mode of sprint interval training (SIT) has been shown to be an efficient method for improving sports performance, exercise capacity, and aerobic fitness. Although the benefits of SIT are well described, the mechanisms underlying the different degrees of response remain largely unexplored. We aimed to assess the effects of exertion on the responsiveness to SIT. Materials and Methods: The participants were 28 young untrained men (mean ± SD age 25.7 ± 6.03 years) who exhibited either a large or small increase in Wingate test average power in response to nine SIT sessions performed over three weeks. Each training session comprised four-six bouts of 30 s all-out cycling interspaced with 4 min of rest. Individual responses were assessed using heart rate (HR) during exercise for all nine sessions, as well as blood lactate concentration up to 1 h, and the decrement in maximal voluntary knee extension torque (MVC) up to 24 h after the first and last training sessions. Peak oxygen uptake (VO2peak) and maximum HR were measured before and after training during an incremental cycling test to exhaustion. Results: Although all participants showed benefits of SIT such as increased VO2peak, the increase in anaerobic cycling power varied between participants. We identified 17 high responders and nine low responders, whose average power outputs were 0.80 ± 0.22 and 0.22 ± 0.19 W/kg, respectively. The HR achieved during any of the training sessions did not differ between high and low responders. The lactate kinetics did not differ between groups before and after the intervention. Training resulted in a more rapid recovery of MVC without any discernible differences between the high and low responders. Conclusion: The differences in the responses to SIT are not dependent on the exertion level during training.
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Affiliation(s)
- Raulas Krusnauskas
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania; (N.E.); (N.B.); (T.V.); (A.S.); (M.B.); (H.W.); (S.K.)
- Correspondence:
| | - Nerijus Eimantas
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania; (N.E.); (N.B.); (T.V.); (A.S.); (M.B.); (H.W.); (S.K.)
| | - Neringa Baranauskiene
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania; (N.E.); (N.B.); (T.V.); (A.S.); (M.B.); (H.W.); (S.K.)
| | - Tomas Venckunas
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania; (N.E.); (N.B.); (T.V.); (A.S.); (M.B.); (H.W.); (S.K.)
| | - Audrius Snieckus
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania; (N.E.); (N.B.); (T.V.); (A.S.); (M.B.); (H.W.); (S.K.)
| | - Marius Brazaitis
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania; (N.E.); (N.B.); (T.V.); (A.S.); (M.B.); (H.W.); (S.K.)
| | - Hakan Westerblad
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania; (N.E.); (N.B.); (T.V.); (A.S.); (M.B.); (H.W.); (S.K.)
- Department of Physiology and Pharmacology, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Sigitas Kamandulis
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania; (N.E.); (N.B.); (T.V.); (A.S.); (M.B.); (H.W.); (S.K.)
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235
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Williamson J, Hughes CM, Cobley JN, Davison GW. The mitochondria-targeted antioxidant MitoQ, attenuates exercise-induced mitochondrial DNA damage. Redox Biol 2020; 36:101673. [PMID: 32810739 PMCID: PMC7452004 DOI: 10.1016/j.redox.2020.101673] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/21/2020] [Accepted: 08/02/2020] [Indexed: 12/23/2022] Open
Abstract
High-intensity exercise damages mitochondrial DNA (mtDNA) in skeletal muscle. Whether MitoQ - a redox active mitochondrial targeted quinone - can reduce exercise-induced mtDNA damage is unknown. In a double-blind, randomized, placebo-controlled design, twenty-four healthy male participants consisting of two groups (placebo; n = 12, MitoQ; n = 12) performed an exercise trial of 4 x 4-min bouts at 90–95% of heart rate max. Participants completed an acute (20 mg MitoQ or placebo 1-h pre-exercise) and chronic (21 days of supplementation) phase. Blood and skeletal muscle were sampled immediately pre- and post-exercise and analysed for nuclear and mtDNA damage, lipid hydroperoxides, lipid soluble antioxidants, and the ascorbyl free radical. Exercise significantly increased nuclear and mtDNA damage across lymphocytes and muscle (P < 0.05), which was accompanied with changes in lipid hydroperoxides, ascorbyl free radical, and α-tocopherol (P < 0.05). Acute MitoQ treatment failed to impact any biomarker likely due to insufficient initial bioavailability. However, chronic MitoQ treatment attenuated nuclear (P < 0.05) and mtDNA damage in lymphocytes and muscle tissue (P < 0.05). Our work is the first to show a protective effect of chronic MitoQ supplementation on the mitochondrial and nuclear genomes in lymphocytes and human muscle tissue following exercise, which is important for genome stability. Exercise damages mitochondrial DNA in lymphocytes and muscle tissue. Acute MitoQ ingestion has no impact on biomarkers of oxidative stress. Chronic MitoQ supplementation protects mitochondrial and nuclear DNA.
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Affiliation(s)
- Josh Williamson
- Ulster University, Sport and Exercise Research Institute, Newtownabbey, Northern Ireland, UK
| | - Ciara M Hughes
- Ulster University, Nursing and Health Research Institute, Newtownabbey, Northern Ireland, UK
| | - James N Cobley
- Free Radical Research Group, University of the Highlands and Islands, Centre for Health Sciences, Inverness, IV2 3JH, UK
| | - Gareth W Davison
- Ulster University, Sport and Exercise Research Institute, Newtownabbey, Northern Ireland, UK.
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236
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Duggan JD, Moody J, Byrne PJ, Ryan L. Strength and Conditioning Recommendations for Female GAA Athletes: The Camogie Player. Strength Cond J 2020. [DOI: 10.1519/ssc.0000000000000577] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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237
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Characterizing the Heart Rate Response to the 4 × 4 Interval Exercise Protocol. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17145103. [PMID: 32679757 PMCID: PMC7399937 DOI: 10.3390/ijerph17145103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/03/2020] [Accepted: 07/13/2020] [Indexed: 11/17/2022]
Abstract
High intensity interval training is frequently implemented using the 4 × 4 protocol where four 4-min bouts are performed at heart rate (HR) between 85 and 95% HR max. This study identified the HR and power output response to the 4 × 4 protocol in 39 active men and women (age and VO2 max = 26.0 ± 6.1 years and 37.0 ± 5.4 mL/kg/min). Initially, participants completed incremental cycling to assess VO2 max, HR max, and peak power output (PPO). They subsequently completed the 4 × 4 protocol, during which HR and power output were monitored. Data showed that 12.9 ± 0.4 min of 16 min were spent between 85 and 95% HR max, with time spent significantly lower in interval 1 (2.7 ± 0.6 min) versus intervals 2–4 (3.4 ± 0.4 min, 3.4 ± 0.3 min, and 3.5 ± 0.3 min, d = 2.4–2.7). Power output was highest in interval 1 (75% PPO) and significantly declined in intervals 2–4 (63 to 54% PPO, d = 0.7–1.0). To enhance time spent between 85 and 95% HR max for persons with higher fitness, we recommend immediate allocation of supramaximal intensities in interval one.
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238
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Sackett JR, Farrell DP, Nagelkirk PR. Hemostatic Adaptations to High Intensity Interval Training in Healthy Adult Men. Int J Sports Med 2020; 41:867-872. [PMID: 32634847 DOI: 10.1055/a-1165-2040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Regular exercise is theorized to reduce cardiovascular risk by attenuating coagulation and augmenting fibrinolysis. However, these adaptations have not been consistently observed during traditional exercise programs. The purpose of this study was to examine hemostatic adaptations in healthy men following four (4W) and eight (8W) weeks of high intensity interval training. Twenty-one men (age=25±1 y; body mass index=26.5±6.4 kg/m2) completed eight weeks, three days/week of high intensity interval training on a cycle ergometer. Activated partial thromboplastin time, prothrombin time, and plasma concentrations of thrombin-antithrombin III, fibrinogen, tissue plasminogen activator, and plasminogen activator inhibitor-1 were assessed at baseline (BL), 4W, and 8W. Repeated measures ANOVA were used to determine potential effects of training. There were no significant changes observed for activated partial thromboplastin time (BL=43.3±5.5, 4W=43.2±5.1, 8W=44.2±6.4 s); prothrombin time (BL=13.2±0.9, 4W=13.0±0.6, 8W=13.1±0.8 s); thrombin-antithrombin III (BL=6.0±2.3, 4W=5.8±2.3, 8W=5.6±3.1 ng/mL); tissue plasminogen activator (BL=9.7±3.3, 4W=9.4±3.2, 8W=8.7±2.8 ng/mL); and plasminogen activator inhibitor-1 (BL=19.0±17.5, 4W=19.3±17.0, 8W=18.9±18.9 ng/mL) (all p>0.05). Fibrinogen was significantly lower at 4W (238.6±70.3 mg/dL) compared to BL (285.0±82.1 mg/dL; p<0.05) and 8W (285.3±83.2 mg/dL; p<0.05). These findings indicate that eight weeks of high intensity interval training does not influence coagulation potential and/or stimulate fibrinolysis.
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Affiliation(s)
- James R Sackett
- Integrative Exercise Physiology Laboratory, Ball State University, Muncie, United States
| | - Dan P Farrell
- Integrative Exercise Physiology Laboratory, Ball State University, Muncie, United States
| | - Paul R Nagelkirk
- Integrative Exercise Physiology Laboratory, Ball State University, Muncie, United States
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239
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Improving Utilization of Maximal Oxygen Uptake and Work Economy in Recreational Cross-Country Skiers With High-Intensity Double-Poling Intervals. Int J Sports Physiol Perform 2020; 16:37-44. [PMID: 32604071 DOI: 10.1123/ijspp.2019-0689] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 01/31/2020] [Accepted: 02/13/2020] [Indexed: 11/18/2022]
Abstract
PURPOSE To investigate the effect of a double-poling (DP) high-intensity aerobic interval-training (HIT) intervention performed without increasing total HIT volume. This means that regular HIT training (eg, running) was replaced by HIT DP. The aim was to explore whether this intervention could improve peak oxygen uptake in DP, the fractional utilization of maximal oxygen uptake (VO2max) in DP, oxygen cost of DP, maximal aerobic speed, and a 3-km DP time trial. METHODS Nine non-specially-DP-trained cross-country skiers (intervention group) and 9 national-level cross-country skiers (control group) were recruited. All participants were tested for VO2max in running, peak oxygen uptake in DP, oxygen cost of DP, and time-trial performance before and after a 6-wk, 3-times-per-week HIT DP intervention. The intervention group omitted all regular HIT with HIT in DP, leaving the total weekly amount of HIT unchanged. RESULTS Seven participants in each group completed the study. VO2max in running remained unchanged in both groups, whereas peak oxygen uptake in DP improved by 7.1% (P = .005) in the intervention group. The fractional utilization of VO2max in DP thus increased by 7.3% (P = .019), oxygen cost of DP by 9.2% (P = .047), maximal aerobic speed by 16.5% (P = .009), and time trial by 19.5% (P = .004) in the intervention group but remained unchanged in the control group. CONCLUSIONS The results indicate that a 6-wk HIT DP intervention could be an effective model to improve DP-specific capacities, with maintenance of VO2max in running.
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240
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Semisupervised Physical Exercise and Lifestyle Counseling in Cardiometabolic Risk Management in Sedentary Adults: Controlled Randomized Trial (BELLUGAT). J Phys Act Health 2020; 17:744-755. [PMID: 32531762 DOI: 10.1123/jpah.2019-0409] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 03/17/2020] [Accepted: 04/27/2020] [Indexed: 11/18/2022]
Abstract
BACKGROUND The purpose of this study was to evaluate the feasibility and effectiveness of a high-intensity semisupervised exercise program alongside lifestyle counseling as an intervention for managing cardiometabolic risk in sedentary adults. METHODS A 40-week 3-arm randomized controlled clinical trial (16-wk intervention and 24-wk follow-up) was used. Seventy-five sedentary adults (34-55 y) with at least 1 cardiometabolic risk factor were randomized into one of the following arms: (1) aerobic interval training (AIT) plus lifestyle counseling (n = 25), (2) low- to moderate-intensity continuous training plus lifestyle counseling (traditional continuous training, TCT) (n = 27), or (3) lifestyle counseling alone (COU) (n = 23). Metabolic syndrome severity scores, accelerometer-based physical activity, and self-reported dietary habits were assessed at baseline, after the intervention, and at follow-up. RESULTS AIT was well accepted with high enjoyment scores. All groups showed similar improvements in metabolic syndrome severity scores (standardized effect size = 0.46) and dietary habits (standardized effect size = 0.30). Moderate to vigorous physical activity increased in all study groups, with the number of responders higher in AIT and TCT groups (50%) than in COU group (21%). Both AIT and TCT had a greater impact on sedentary behavior than COU (63.5% vs 30.4% responders). CONCLUSIONS AIT appears to be a feasible and effective strategy in sedentary individuals with cardiometabolic risk factors. AIT could be included in intervention programs tackling unhealthy lifestyles.
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241
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Russomando L, Bono V, Mancini A, Terracciano A, Cozzolino F, Imperlini E, Orrù S, Alfieri A, Buono P. The Effects of Short-Term High-Intensity Interval Training and Moderate Intensity Continuous Training on Body Fat Percentage, Abdominal Circumference, BMI and VO 2max in Overweight Subjects. J Funct Morphol Kinesiol 2020; 5:E41. [PMID: 33467257 PMCID: PMC7739244 DOI: 10.3390/jfmk5020041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 06/04/2020] [Accepted: 06/05/2020] [Indexed: 12/18/2022] Open
Abstract
We aimed to compare the effects of a personalized short-term high-intensity interval training (HIIT) vs. standard moderate intensity continuous training (MICT) on body fat percentage, abdominal circumference, BMI and maximal oxygen uptake (VO2max) in overweight volunteers. Twenty overweight sedentary volunteers (24.9 ± 2.9y; BMI: 26.1 ± 1 kgm-2) were randomly assigned to 2 groups, HIIT or MICT. HIIT trained 6 weeks (3-days/week), 40-min sessions as follows: 6-min warm-up, 20-min resistance training (RT) at 70% 1-RM, 8-min HIIT up to 90% of the predicted Maximal Heart Rate (HRmax), 6-min cool-down. MICT trained 6 weeks (3-days/week) 60-min sessions as follows: 6-min warm-up, 20-min RT at 70% 1-RM, 30-min MICT at 60-70% of the predicted HRmax, 4-min cool-down. Two-way ANOVA was performed in order to compare the efficacy of HIIT and MICT protocols, and no significant interaction between training x time was evidenced (p > 0.05), indicating similar effects of both protocols on all parameters analyzed. Interestingly, the comparison of Δ mean percentage revealed an improvement in VO2max (p = 0.05) together with a positive trend in the reduction of fat mass percentage (p = 0.06) in HIIT compared to MICT protocol. In conclusion, 6 weeks of personalized HIIT, with reduced training time (40 vs. 60 min)/session and volume of training/week, improved VO2max and reduced fat mass percentage more effectively compared to MICT. These positive results encourage us to test this training in a larger population.
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Affiliation(s)
- Luca Russomando
- Dipartimento di Scienze Motorie e del Benessere, Università degli Studi di Napoli Parthenope, 80133 Naples, Italy; (L.R.); (V.B.); (A.M.); (A.T.); (F.C.); (S.O.)
| | - Vincenzo Bono
- Dipartimento di Scienze Motorie e del Benessere, Università degli Studi di Napoli Parthenope, 80133 Naples, Italy; (L.R.); (V.B.); (A.M.); (A.T.); (F.C.); (S.O.)
| | - Annamaria Mancini
- Dipartimento di Scienze Motorie e del Benessere, Università degli Studi di Napoli Parthenope, 80133 Naples, Italy; (L.R.); (V.B.); (A.M.); (A.T.); (F.C.); (S.O.)
- CEINGE-Biotecnologie avanzate, 80131 Naples, Italy
| | - Alessia Terracciano
- Dipartimento di Scienze Motorie e del Benessere, Università degli Studi di Napoli Parthenope, 80133 Naples, Italy; (L.R.); (V.B.); (A.M.); (A.T.); (F.C.); (S.O.)
| | - Francesca Cozzolino
- Dipartimento di Scienze Motorie e del Benessere, Università degli Studi di Napoli Parthenope, 80133 Naples, Italy; (L.R.); (V.B.); (A.M.); (A.T.); (F.C.); (S.O.)
| | | | - Stefania Orrù
- Dipartimento di Scienze Motorie e del Benessere, Università degli Studi di Napoli Parthenope, 80133 Naples, Italy; (L.R.); (V.B.); (A.M.); (A.T.); (F.C.); (S.O.)
- CEINGE-Biotecnologie avanzate, 80131 Naples, Italy
| | - Andreina Alfieri
- Dipartimento di Scienze Motorie e del Benessere, Università degli Studi di Napoli Parthenope, 80133 Naples, Italy; (L.R.); (V.B.); (A.M.); (A.T.); (F.C.); (S.O.)
- CEINGE-Biotecnologie avanzate, 80131 Naples, Italy
| | - Pasqualina Buono
- Dipartimento di Scienze Motorie e del Benessere, Università degli Studi di Napoli Parthenope, 80133 Naples, Italy; (L.R.); (V.B.); (A.M.); (A.T.); (F.C.); (S.O.)
- CEINGE-Biotecnologie avanzate, 80131 Naples, Italy
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242
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Calverley TA, Ogoh S, Marley CJ, Steggall M, Marchi N, Brassard P, Lucas SJE, Cotter JD, Roig M, Ainslie PN, Wisløff U, Bailey DM. HIITing the brain with exercise: mechanisms, consequences and practical recommendations. J Physiol 2020; 598:2513-2530. [PMID: 32347544 DOI: 10.1113/jp275021] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 04/15/2020] [Indexed: 01/30/2023] Open
Abstract
The increasing number of older adults has seen a corresponding growth in those affected by neurovascular diseases, including stroke and dementia. Since cures are currently unavailable, major efforts in improving brain health need to focus on prevention, with emphasis on modifiable risk factors such as promoting physical activity. Moderate-intensity continuous training (MICT) paradigms have been shown to confer vascular benefits translating into improved musculoskeletal, cardiopulmonary and cerebrovascular function. However, the time commitment associated with MICT is a potential barrier to participation, and high-intensity interval training (HIIT) has since emerged as a more time-efficient mode of exercise that can promote similar if not indeed superior improvements in cardiorespiratory fitness for a given training volume and further promote vascular adaptation. However, randomised controlled trials (RCTs) investigating the impact of HIIT on the brain are surprisingly limited. The present review outlines how the HIIT paradigm has evolved from a historical perspective and describes the established physiological changes including its mechanistic bases. Given the dearth of RCTs, the vascular benefits of MICT are discussed with a focus on the translational neuroprotective benefits including their mechanistic bases that could be further potentiated through HIIT. Safety implications are highlighted and components of an optimal HIIT intervention are discussed including practical recommendations. Finally, statistical effect sizes have been calculated to allow prospective research to be appropriately powered and optimise the potential for detecting treatment effects. Future RCTs that focus on the potential clinical benefits of HIIT are encouraged given the prevalence of cognitive decline in an ever-ageing population.
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Affiliation(s)
- Thomas A Calverley
- Neurovascular Research Laboratory, Faculty of Life Sciences and Education, University of South Wales, UK
| | - Shigehiko Ogoh
- Neurovascular Research Laboratory, Faculty of Life Sciences and Education, University of South Wales, UK.,Department of Biomedical Engineering, Faculty of Engineering, Toyo University, Saitama, Japan
| | - Christopher J Marley
- Neurovascular Research Laboratory, Faculty of Life Sciences and Education, University of South Wales, UK
| | - Martin Steggall
- Neurovascular Research Laboratory, Faculty of Life Sciences and Education, University of South Wales, UK
| | - Nicola Marchi
- Cerebrovascular and Glia Research Laboratory, Department of Neuroscience, Institute of Functional Genomics, Montpellier, France
| | - Patrice Brassard
- Department of Kinesiology, Faculty of Medicine, Université Laval, Québec, Canada
| | - Samuel J E Lucas
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
| | - James D Cotter
- School of Physical Education, Sport and Exercise Sciences, University of Otago, Dunedin, New Zealand
| | - Marc Roig
- Faculty of Medicine, McGill University, Montreal, Canada
| | - Philip N Ainslie
- Neurovascular Research Laboratory, Faculty of Life Sciences and Education, University of South Wales, UK.,Centre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia-Okanagan Campus, Kelowna, BC, Canada
| | - Ulrik Wisløff
- The Cardiac Exercise Research Group, Department of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway.,School of Human Movement and Nutrition Science, University of Queensland, Queensland, Australia
| | - Damian M Bailey
- Neurovascular Research Laboratory, Faculty of Life Sciences and Education, University of South Wales, UK
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243
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Øvretveit K. High-Intensity, Non-Sport-Specific Strength and Conditioning for Brazilian Jiu-Jitsu Athletes: Theoretical and Practical Considerations. Strength Cond J 2020. [DOI: 10.1519/ssc.0000000000000542] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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244
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Torvik PØ, van den Tillaar R, Iversen G. Does the Order of Submaximal Lactate Threshold and Maximal Oxygen Uptake Testing Influence Test Outcomes? Sports (Basel) 2020; 8:sports8060075. [PMID: 32466372 PMCID: PMC7353634 DOI: 10.3390/sports8060075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/20/2020] [Accepted: 05/21/2020] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to investigate if the order of submaximal lactate threshold and maximal oxygen uptake testing would influence test outcomes. Twelve well-trained male cross-country skiers (mean age 19.6 years) performed two test sessions within a week in a within-subjects repeated measures with cross-over design study. A maximal oxygen uptake test (VO2max) followed by a lactate threshold (LT) test and vice versa, were performed. The test data included VO2, blood lactate (La-b), heart rate (HR), performance speed, Borg scale (RPE) at all stages and lactate accumulation throughout the whole test protocol including the breaks. No significant effect of testing order was found for: VO2max (74.23 vs. 73.91 mL∙min−1∙kg−1), maximal HR (190.7 vs. 189.9 bpm) and speed at LT during uphill running. Three out of four common definitions of LT resulted in the same La-b at the last two steps, 11 and 12 km/h respectively, in the two protocols. It is worth noting that VO2, HR and La-b were higher in the first two stages of the LT test when VO2max was tested first in the protocol. Well-trained cross-country skiers conclusively attained a similar VO2max and LT in both protocols, and the two tests did not seem to influence each other in terms of the degree of exhaustion that occurs in a single VO2max or an incremental LT test. However, when using a curvilinear function to define the LT, it is important to know that the VO2max test can influence levels of VO2, HR and La-b at the first two stages of the LT test.
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Affiliation(s)
- Per-Øyvind Torvik
- Correspondence: ; Tel.: +47-97434437 or +47-74022984; Fax: +47-74112001
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245
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The effects of human sera conditioned by high-intensity exercise sessions and training on the tumorigenic potential of cancer cells. Clin Transl Oncol 2020; 23:22-34. [DOI: 10.1007/s12094-020-02388-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 05/10/2020] [Indexed: 02/07/2023]
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246
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The Effect of Low-Volume High-Intensity Interval Training on Body Composition and Cardiorespiratory Fitness: A Systematic Review and Meta-Analysis. Sports Med 2020; 49:1687-1721. [PMID: 31401727 DOI: 10.1007/s40279-019-01167-w] [Citation(s) in RCA: 133] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Evidence for the efficacy of low-volume high-intensity interval training (HIIT) for the modulation of body composition is unclear. OBJECTIVES We examined the effect of low-volume HIIT versus a non-exercising control and moderate-intensity continuous training (MICT) on body composition and cardiorespiratory fitness in normal weight, overweight and obese adults. We evaluated the impact of low-volume HIIT (HIIT interventions where the total amount of exercise performed during training was ≤ 500 metabolic equivalent minutes per week [MET-min/week]) compared to a non-exercising control and MICT. METHODS A database search was conducted in PubMed (MEDLINE), EMBASE, CINAHL, Web of Science, SPORTDiscus and Scopus from the earliest record to June 2019 for studies (randomised controlled trials and non-randomised controlled trials) with exercise training interventions with a minimum 4-week duration. Meta-analyses were conducted for between-group (low-volume HIIT vs. non-exercising control and low-volume HIIT vs. MICT) comparisons for change in total body fat mass (kg), body fat percentage (%), lean body mass (kg) and cardiorespiratory fitness. RESULTS From 11,485 relevant records, 47 studies were included. No difference was found between low-volume HIIT and a non-exercising control on total body fat mass (kg) (effect size [ES]: - 0.129, 95% confidence interval [CI] - 0.468 to 0.210; p = 0.455), body fat (%) (ES: - 0.063, 95% CI - 0.383 to 0.257; p = 0.700) and lean body mass (kg) (ES: 0.050, 95% CI - 0.250 to 0.351; p = 0.744), or between low-volume HIIT and MICT on total body fat mass (kg) (ES: - 0.021, 95% CI - 0.272 to 0.231; p = 0.872), body fat (%) (ES: 0.005, 95% CI - 0.294 to 0.304; p = 0.974) and lean body mass (kg) (ES: 0.030, 95% CI - 0.167 to 0.266; p = 0.768). However, low-volume HIIT significantly improved cardiorespiratory fitness compared with a non-exercising control (p < 0.001) and MICT (p = 0.017). CONCLUSION These data suggest that low-volume HIIT is inefficient for the modulation of total body fat mass or total body fat percentage in comparison with a non-exercise control and MICT. A novel finding of our meta-analysis was that there appears to be no significant effect of low-volume HIIT on lean body mass when compared with a non-exercising control, and while most studies tended to favour improvement in lean body mass with low-volume HIIT versus MICT, this was not significant. However, despite its lower training volume, low-volume HIIT induces greater improvements in cardiorespiratory fitness than a non-exercising control and MICT in normal weight, overweight and obese adults. Low-volume HIIT, therefore, appears to be a time-efficient treatment for increasing fitness, but not for the improvement of body composition.
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247
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Myrkos A, Smilios I, Zafeiridis A, Iliopoulos S, Kokkinou EM, Douda H, Tokmakidis SP. Effects of Work and Recovery Duration and Their Ratio on Cardiorespiratory and Metabolic Responses During Aerobic Interval Exercise. J Strength Cond Res 2020; 36:2169-2175. [PMID: 32379235 DOI: 10.1519/jsc.0000000000003578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Myrkos, A, Smilios, I, Zafeiridis, A, Iliopoulos, S, Kokkinou, EM, Douda, H, and Tokmakidis, SP. Effects of work and recovery duration and their ratio on cardiorespiratory and metabolic responses during aerobic interval exercise. J Strength Cond Res XX(X): 000-000, 2020-This study examined the effect of work and recovery durations and of work-to-rest ratio (WRR) on total exercise time and oxygen consumption (V[Combining Dot Above]O2max), on exercise time above 80, 90, and 95% of V[Combining Dot Above]O2max and HRmax, and on blood lactate concentrations during aerobic interval exercise. Twelve men (22.1 ± 1 year) executed, until exhaustion, 4 interval protocols at an intensity corresponding to 100% of maximal aerobic velocity. Two protocols were performed with work bout duration of 120 seconds and recovery durations of 120 (WRR: 1:1) or 60 seconds (WRR: 2:1), and 2 protocols with work bout duration of 60 seconds and recovery durations of 60 (WRR: 1:1) or 30 seconds (WRR: 2:1). When compared at equal exercise time, total V[Combining Dot Above]O2 and exercise time at V[Combining Dot Above]O2 above 80, 90, and 95% of V[Combining Dot Above]O2max were longer (p < 0.05) in 120:120, 120:60 and 60:30 vs. the 60:60 protocol. When analyzed for total exercise time (until exhaustion), total V[Combining Dot Above]O2 was higher (p < 0.01) in the 60:60 compared with all other protocols, and in the 120:120 compared with 120:60. Exercise time >95% of V[Combining Dot Above]O2max and HRmax was higher (p < 0.05) in the 120:120 vs. the 60:60 protocol; there were no differences among protocols for exercise time >90% of V[Combining Dot Above]O2max and HRmax. Blood lactate was lower (p < 0.05) in the 60:60 compared with all other protocols and in the 60:30 vs. the 120:60. In conclusion, when interval exercise protocols are executed at similar effort (until exhaustion), work and recovery durations do not, in general, affect exercise time at high oxygen consumption and HR rates. However, as work duration decreases, a higher work-to-recovery ratio (e.g., 2:1) should be used to achieve and maintain high (>95% of maximum) cardiorespiratory stimulus. Longer work bouts and higher work-to-recovery ratio seem to activate anaerobic glycolysis to a greater extent, as suggested by greater blood lactate concentrations.
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Affiliation(s)
- Aristides Myrkos
- Department of Physical Education & Sport Science, Democritus University of Thrace, Komotini, Greece
| | - Ilias Smilios
- Department of Physical Education & Sport Science, Democritus University of Thrace, Komotini, Greece
| | - Andreas Zafeiridis
- Department of Physical Education & Sport Science, Serres, Aristotle University of Thessaloniki, Agios Ioannis, Serres, Greece
| | - Stilianos Iliopoulos
- Department of Physical Education & Sport Science, Democritus University of Thrace, Komotini, Greece
| | - Eleni M Kokkinou
- Department of Physical Education & Sport Science, Democritus University of Thrace, Komotini, Greece
| | - Helen Douda
- Department of Physical Education & Sport Science, Democritus University of Thrace, Komotini, Greece
| | - Savvas P Tokmakidis
- Department of Physical Education & Sport Science, Democritus University of Thrace, Komotini, Greece
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248
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Sveaas SH, Dagfinrud H, Berg IJ, Provan SA, Johansen MW, Pedersen E, Bilberg A. High-Intensity Exercise Improves Fatigue, Sleep, and Mood in Patients With Axial Spondyloarthritis: Secondary Analysis of a Randomized Controlled Trial. Phys Ther 2020; 100:1323-1332. [PMID: 32367124 PMCID: PMC7439225 DOI: 10.1093/ptj/pzaa086] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 09/04/2019] [Accepted: 02/11/2020] [Indexed: 01/03/2023]
Abstract
OBJECTIVE Although exercise is recommended in the treatment of axial spondyloarthritis (axSpa), the focus has been on flexibility, and the effect of high-intensity exercises is unknown. The purpose of this study was to investigate the effect of high-intensity exercises on fatigue, sleep, and mood in patients with axSpA. METHODS In this secondary analysis of a randomized controlled trial, participants were recruited from outpatient clinics at 4 hospitals in Scandinavia. A total of 100 patients with axSpA were randomized to either an exercise group (n = 50) or a control group (n = 50). High-intensity exercise was provided 3 times per week for 3 months and supervised by a physical therapist. The controls received no intervention. Measurements were self-reported at baseline, 3 months, and 12 months: fatigue, using the Fatigue Severity Scale (range = 0-7, 7 = worst, ≥5 = severe); vitality, using the RAND 36-item short-form health survey (SF-36, range = 0-100, 100 = best); sleep, using the Pittsburgh Sleep Quality Index (range = 0-21, 21 = worst, >5 = poor quality); mood, using the General Health Questionnaire 12 (range = 0-36, 36 = worst); and general health, using the EUROQoL (range = 0-100, 100 = best). RESULTS A total of 38 participants (76%) in the exercise group followed ≥80% of the exercise protocol. At 3 months, there was a significant beneficial effect on fatigue (mean group differences = -0.4, 95% CI = -0.7 to -0.1), vitality (5.0, 95% CI = 1.1 to 10.5), mood (-2, 95% CI = -3.7 to -0.04), and general health (9.0, 95% CI = 3.3 to 14.7) but no effect on sleep (-1.1, 95% CI = -2.1 to 0.2). Compared with the control group, the exercise group had a reduced rate of severe fatigue and poor sleep. No differences were seen between the groups at 12 months. CONCLUSIONS A 3-month exercise program had a beneficial effect on fatigue, sleep, mood, and general health in patients with axSpA at the end of the intervention; however, no long-term effects were seen. IMPACT High-intensity cardiorespiratory and strength exercises should be considered as important in exercise programs for patients with axSpA.
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Affiliation(s)
- Silje Halvorsen Sveaas
- Department of Rheumatology, Norwegian National Advisory Unit on Rehabilitation in Rheumatology, Diakonhjemmet Hospital, Diakonveien 12, Oslo, Norway,Address all correspondence to Dr Sveaas at:
| | - Hanne Dagfinrud
- Department of Rheumatology, Norwegian National Advisory Unit on Rehabilitation in Rheumatology, Diakonhjemmet Hospital
| | | | | | | | - Elisabeth Pedersen
- Department of Physiotherapy, University Hospital of North Norway, Tromsø, Norway
| | - Annelie Bilberg
- Institute of Neuroscience and Physiology, Section of Health and Rehabilitation, Physiotherapy, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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249
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Influence of Interval Training Frequency on Time-Trial Performance in Elite Endurance Athletes. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17093190. [PMID: 32375328 PMCID: PMC7246952 DOI: 10.3390/ijerph17093190] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 04/28/2020] [Accepted: 04/29/2020] [Indexed: 11/17/2022]
Abstract
PURPOSE To determine the impact of interval training frequency in elite endurance athletes. It was hypothesized that two longer sessions would elicit greater performance improvements and physiological adaptation than four shorter sessions at the same intensity. METHODS Elite cross-country skiers and biathletes were randomly assigned to either a high-frequency group (HF group) (5 M, 1 F, age 22 (19-26), VO2max 67.8 (65.5-70.2) mL/kg/min) doing four short interval sessions per week or a low-frequency group (LF group) (8 M, 1 F, age 22 (18-23), VO2max 70.7 (67.0-73.9) mL/kg/min) doing two longer interval sessions. All interval sessions were performed at ~85% of maximum heart rate, and groups were matched for total weekly training volume. Pre- and post-intervention, athletes completed an 8 km rollerski time-trial, maximal oxygen uptake (VO2max) test, and an incremental, submaximal exercise test. RESULTS The LF group had a statistically significant improved time-trial performance following the intervention (p = 0.04), with no statistically significant changes in the HF group. Similarly, percentage utilization of VO2max at anaerobic threshold (p = 0.04) and exercise economy (p = 0.01) were statistically significantly improved following the intervention in the LF group only. No statistically significant changes in VO2max were observed in either group. CONCLUSIONS Two longer interval sessions appear superior to four shorter sessions per week in promoting endurance adaptations and performance improvements in elite endurance athletes. Despite matched training volume and exercise intensity, the larger, more concentrated exercise stimulus in the LF group appears to induce more favorable adaptations. The longer time between training sessions in the LF group may also have allowed athletes to recover more effectively and better "absorb" the training. These findings are in line with the "best practice" observed by many of the world's best endurance athletes.
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250
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Gibala MJ. Physiological basis of interval training for performance enhancement. Exp Physiol 2020; 106:2324-2327. [PMID: 32362039 DOI: 10.1113/ep088190] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 04/23/2020] [Indexed: 01/28/2023]
Abstract
NEW FINDINGS What is the topic of this review? This review considers the physiological basis of interval training for performance enhancement, with an emphasis on the capacity for aerobic energy provision. What advances does it highlight? It highlights advances regarding the effect of interval training on primary physiological determinants of aerobic energy provision, which are associated with performance. ABSTRACT Interval training refers to an intermittent style of exercise, in which bouts of more intense effort are interspersed with recovery periods within a given training session. Physiological responses to interval training depend on numerous factors, including the specific nature of the intervention and the initial training state of the individual. Interval training improves performance in part by enhancing the capacity for aerobic energy provision, even in those who are already trained. Two primary mechanisms in this regard are an increased whole-body maximal oxygen uptake and an enhanced capacity for oxidative metabolism in skeletal muscle owing to an increase in mitochondria. In comparison to moderate-intensity continuous exercise, interval training can elicit superior responses when total work is matched, and similar responses despite a reduced training volume and time commitment.
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Affiliation(s)
- Martin J Gibala
- Department of Kinesiology, McMaster University, Hamilton, Ontario, Canada
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