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Alexander AM, Hammer SM, Didier KD, Huckaby LM, Barstow TJ. Neuromuscular recovery from severe- and extreme-intensity exercise in men and women. Appl Physiol Nutr Metab 2022; 47:458-468. [PMID: 35020495 DOI: 10.1139/apnm-2021-0407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Maximal voluntary contraction force (MVC), potentiated twitch force (Qpot), and voluntary activation (%VA) recover to baseline within 90 s following extreme-intensity exercise. However, methodological limitations mask important recovery kinetics. We hypothesized reductions in MVC, Qpot, and %VA at task failure following extreme-intensity exercise would be less than following severe-intensity exercise, and Qpot and MVC following extreme-intensity exercise would show significant recovery within 120 s but remain depressed following severe-intensity exercise. Twelve subjects (6 men) completed 2 severe-intensity (40, 50% MVC) and 2 extreme-intensity (70, 80% MVC) isometric knee-extension exercise bouts to task failure (Tlim). Neuromuscular function was measured at baseline, Tlim, and through 150 s of recovery. Each intensity significantly reduced MVC and Qpot compared with baseline. MVC was greater at Tlim (p < 0.01) and at 150 s of recovery (p = 0.004) following exercise at 80% MVC compared with severe-intensity exercise. Partial recovery of MVC and Qpot were detected within 150 s following Tlim for each exercise intensity; Qpot recovered to baseline values within 150 s of recovery following exercise at 80% MVC. No differences in %VA were detected pre- to post-exercise or across recovery for any intensity. Although further analysis showed sex-specific differences in MVC and Qpot, future studies should closely examine sex-dependent responses to extreme-intensity exercise. It is clear, however, that these data reinforce that mechanisms limiting exercise tolerance during extreme-intensity exercise recover quickly. Novelty: Severe- and extreme-intensity exercise cause independent responses in fatigue accumulation and the subsequent recovery time courses. Recovery of MVC and Qpot occurs much faster following extreme-intensity exercise in both men and women.
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Affiliation(s)
- Andrew M Alexander
- Department of Kinesiology, Kansas State University, Manhattan, KS, USA.,Department of Kinesiology, Kansas State University, Manhattan, KS, USA
| | - Shane M Hammer
- Department of Kinesiology, Kansas State University, Manhattan, KS, USA.,Department of Kinesiology, Kansas State University, Manhattan, KS, USA
| | - Kaylin D Didier
- Department of Kinesiology, Kansas State University, Manhattan, KS, USA.,Department of Kinesiology, Kansas State University, Manhattan, KS, USA
| | - Lillie M Huckaby
- Department of Kinesiology, Kansas State University, Manhattan, KS, USA.,Department of Kinesiology, Kansas State University, Manhattan, KS, USA
| | - Thomas J Barstow
- Department of Kinesiology, Kansas State University, Manhattan, KS, USA.,Department of Kinesiology, Kansas State University, Manhattan, KS, USA
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Magalhães FDC, Aguiar PF, Tossige-Gomes R, Magalhães SM, Ottone VDO, Fernandes T, Oliveira EM, Dias-Peixoto MF, Rocha-Vieira E, Amorim FT. High-intensity interval training followed by postexercise cold-water immersion does not alter angiogenic circulating cells, but increases circulating endothelial cells. Appl Physiol Nutr Metab 2019; 45:101-111. [PMID: 31167081 DOI: 10.1139/apnm-2019-0041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
High-intensity interval training (HIIT) induces vascular adaptations that might be attenuated by postexercise cold-water immersion (CWI). Circulating angiogenic cells (CAC) participate in the vascular adaptations and circulating endothelial cells (CEC) indicate endothelial damage. CAC and CEC are involved in vascular adaptation. Therefore, the aim of the study was to investigate postexercise CWI during HIIT on CAC and CEC and on muscle angiogenesis-related molecules. Seventeen male subjects performed 13 HIIT sessions followed by 15 min of passive recovery (n = 9) or CWI at 10 °C (n = 8). HIIT comprised cycling (8-12 bouts, 90%-110% peak power). The first and the thirteenth sessions were similar (8 bouts at 90% of peak power). Venous blood was drawn before exercise (baseline) and after the recovery strategy (postrecovery) in the first (pretraining) and in the thirteenth (post-training) sessions. For CAC and CEC identification lymphocyte surface markers (CD133, CD34, and VEGFR2) were used. Vastus lateralis muscle biopsies were performed pre- and post-training for protein (p-eNOSser1177) and gene (VEGF and HIF-1) expression analysis related to angiogenesis. CAC was not affected by HIIT or postexercise CWI. Postexercise CWI increased acute and baseline CEC number. Angiogenic protein and genes were not differently modulated by post-CWI. HIIT followed by either recovery strategy did not alter CAC number. Postexercise CWI increased a marker of endothelial damage both acutely and chronically, suggesting that this postexercise recovery strategy might cause endothelial damage. Novelty HIIT followed by CWI did not alter CAC. HIIT followed by CWI increased CEC. Postexercise CWI might cause endothelial damage.
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Affiliation(s)
- Flávio de Castro Magalhães
- Laboratory of Exercise Biology, Integrated Center of Health Research, Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, Minas Gerais 39100-000, Brazil.,Exercise Physiology Laboratory, Department of Health, Exercise and Sports Sciences, University of New Mexico, Albuquerque, NM 87131-0001, USA
| | - Paula Fernandes Aguiar
- Laboratory of Exercise Biology, Integrated Center of Health Research, Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, Minas Gerais 39100-000, Brazil
| | - Rosalina Tossige-Gomes
- Laboratory of Exercise Biology, Integrated Center of Health Research, Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, Minas Gerais 39100-000, Brazil
| | - Sílvia Mourão Magalhães
- Laboratory of Exercise Biology, Integrated Center of Health Research, Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, Minas Gerais 39100-000, Brazil
| | - Vinícius de Oliveira Ottone
- Laboratory of Exercise Biology, Integrated Center of Health Research, Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, Minas Gerais 39100-000, Brazil
| | - Tiago Fernandes
- Laboratory of Biochemistry of the Motor Activity, School of Physical Education and Sport, University of São Paulo, São Paulo 05508-030, Brazil
| | - Edilamar Menezes Oliveira
- Laboratory of Biochemistry of the Motor Activity, School of Physical Education and Sport, University of São Paulo, São Paulo 05508-030, Brazil
| | - Marco Fabrício Dias-Peixoto
- Laboratory of Exercise Biology, Integrated Center of Health Research, Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, Minas Gerais 39100-000, Brazil
| | - Etel Rocha-Vieira
- Laboratory of Exercise Biology, Integrated Center of Health Research, Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, Minas Gerais 39100-000, Brazil
| | - Fabiano Trigueiro Amorim
- Laboratory of Exercise Biology, Integrated Center of Health Research, Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina, Minas Gerais 39100-000, Brazil.,Exercise Physiology Laboratory, Department of Health, Exercise and Sports Sciences, University of New Mexico, Albuquerque, NM 87131-0001, USA
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Purdy GM, James MA, Wakefield PK, Skow RJ, Van Diepen S, May LE, Davenport MH, Steinback CD. Maternal cardioautonomic responses during and following exercise throughout pregnancy. Appl Physiol Nutr Metab 2018; 44:263-270. [PMID: 30138571 DOI: 10.1139/apnm-2018-0397] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Blood pressure regulation during pregnancy is poorly understood. Cardiovagal baroreflex gain (BRG) is an important contributor to blood pressure regulation through its influence on heart rate. Heart rate fluctuations occur in response to various physiological stimuli and can be measured using heart rate variability (HRV). It is unclear how these mechanisms operate during pregnancy, particularly with regard to exercise. We examined BRG and HRV prior to, during, and following prenatal exercise. Forty-three pregnant (n = 10 first trimester (TM1), n = 17 second trimester (TM2), n = 16 third trimester (TM3)) and 20 nonpregnant (NP) women underwent an incremental peak exercise test. Beat-by-beat blood pressure (photoplethysmography) and heart rate (lead II electrocardiogram) were measured throughout. BRG (the slope of the relationship between fluctuations in systolic blood pressure and the R-R interval) and HRV (root mean square of the successive differences; RMSSD) were assessed at rest, during steady-state exercise (EX), and during active recovery. BRG decreased with gestation and was lower in the TM3 group than in the NP group (17.9 ± 6.9 ms/mm Hg vs 24.8 ± 7.4 ms/mm Hg, p = 0.017). BRG was reduced during EX in all groups. Resting HRV (RMSSD) also decreased with gestation and was lower in the TM3 group than in the NP group (29 ± 17 ms vs 48 ± 20 ms, p < 0.001). RMSSD was blunted during EX in all groups compared with rest. During active recovery, RMSSD was further blunted compared with EX in the NP group but not during pregnancy (TM1, TM2, and TM3). Compared with the nonpregnant controls, the pregnant women had lower BRG and HRV at rest, but comparable cardioautonomic control during both exercise and active recovery following peak exercise.
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Affiliation(s)
- Graeme M Purdy
- a Neurovascular Health Laboratory, Program for Pregnancy and Postpartum Health, Faculty of Kinesiology, Sport, and Recreation, University of Alberta, Edmonton, AB T6G 2H9, Canada.,b Women and Children's Health Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Marina A James
- a Neurovascular Health Laboratory, Program for Pregnancy and Postpartum Health, Faculty of Kinesiology, Sport, and Recreation, University of Alberta, Edmonton, AB T6G 2H9, Canada.,b Women and Children's Health Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Paige K Wakefield
- a Neurovascular Health Laboratory, Program for Pregnancy and Postpartum Health, Faculty of Kinesiology, Sport, and Recreation, University of Alberta, Edmonton, AB T6G 2H9, Canada.,b Women and Children's Health Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada.,c Alberta Diabetes Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Rachel J Skow
- a Neurovascular Health Laboratory, Program for Pregnancy and Postpartum Health, Faculty of Kinesiology, Sport, and Recreation, University of Alberta, Edmonton, AB T6G 2H9, Canada.,b Women and Children's Health Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada.,c Alberta Diabetes Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Sean Van Diepen
- d Faculty of Medicine and Dentistry, Department of Critical Care and Division of Cardiology, University of Alberta, Edmonton, AB T6G 2R7, Canada
| | - Linda E May
- e Division of Foundational Sciences and Research, East Carolina University, Greenville, NC 27858, USA
| | - Margie H Davenport
- a Neurovascular Health Laboratory, Program for Pregnancy and Postpartum Health, Faculty of Kinesiology, Sport, and Recreation, University of Alberta, Edmonton, AB T6G 2H9, Canada.,b Women and Children's Health Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada.,c Alberta Diabetes Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Craig D Steinback
- a Neurovascular Health Laboratory, Program for Pregnancy and Postpartum Health, Faculty of Kinesiology, Sport, and Recreation, University of Alberta, Edmonton, AB T6G 2H9, Canada.,b Women and Children's Health Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada.,c Alberta Diabetes Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada
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McCarthy A, Mulligan J, Egaña M. Postexercise cold-water immersion improves intermittent high-intensity exercise performance in normothermia. Appl Physiol Nutr Metab 2016; 41:1163-1170. [PMID: 27786541 DOI: 10.1139/apnm-2016-0275] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A brief cold water immersion between 2 continuous high-intensity exercise bouts improves the performance of the latter compared with passive recovery in the heat. We investigated if this effect is apparent in normothermic conditions (∼19 °C), employing an intermittent high-intensity exercise designed to reflect the work performed at the high-intensity domain in team sports. Fifteen young active men completed 2 exhaustive cycling protocols (Ex1 and Ex2: 12 min at 85% ventilatory threshold (VT) and then an intermittent exercise alternating 30-s at 40% peak power (Ppeak) and 30 s at 90% Ppeak to exhaustion) separated by 15 min of (i) passive rest, (ii) 5-min cold-water immersion at 8 °C, and (iii) 10-min cold-water immersion at 8 °C. Core temperature, heart rate, rates of perceived exertion, and oxygen uptake kinetics were not different during Ex1 among conditions. Time to failure during the intermittent exercise was significantly (P < 0.05) longer during Ex2 following the 5- and 10-min cold-water immersions (7.2 ± 3.5 min and 7.3 ± 3.3 min, respectively) compared with passive rest (5.8 ± 3.1 min). Core temperature, heart rate, and rates of perceived exertion were significantly (P < 0.05) lower during most periods of Ex2 after both cold-water immersions compared with passive rest. The time constant of phase II oxygen uptake response during the 85% VT bout of Ex2 was not different among the 3 conditions. A postexercise, 5- to 10-min cold-water immersion increases subsequent intermittent high-intensity exercise compared with passive rest in normothermia due, at least in part, to reductions in core temperature, circulatory strain, and effort perception.
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Affiliation(s)
- Avina McCarthy
- Department of Physiology, School of Medicine, Trinity College Dublin, University of Dublin, Ireland.,Department of Physiology, School of Medicine, Trinity College Dublin, University of Dublin, Ireland
| | - James Mulligan
- Department of Physiology, School of Medicine, Trinity College Dublin, University of Dublin, Ireland.,Department of Physiology, School of Medicine, Trinity College Dublin, University of Dublin, Ireland
| | - Mikel Egaña
- Department of Physiology, School of Medicine, Trinity College Dublin, University of Dublin, Ireland.,Department of Physiology, School of Medicine, Trinity College Dublin, University of Dublin, Ireland
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