1
|
Hill EC, Proppe CE, Rivera PM, Lubiak SM, Gonzalez Rojas DH, Lawson JE, Choi H, Mansy H, Keller JL. Blood flow restriction attenuates surface mechanomyography lateral and longitudinal, but not transverse oscillations during fatiguing exercise. Physiol Meas 2024; 45:045002. [PMID: 38507792 DOI: 10.1088/1361-6579/ad360b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 03/20/2024] [Indexed: 03/22/2024]
Abstract
Objective. Surface mechanomyography (sMMG) can measure oscillations of the activated muscle fibers in three axes (i.e.X,Y, andZ-axes) and has been used to describe motor unit activation patterns (X-axis). The application of blood flow restriction (BFR) is common in exercise studies, but the cuff may restrict muscle fiber oscillations. Therefore, the purpose of this investigation was to examine the acute effects of submaximal, fatiguing exercise with and without BFR on sMMG amplitude in theX,Y, andZ-axes among female participants.Approach. Sixteen females (21 ± 1 years) performed two separate exercise bouts to volitional exhaustion that consisted of unilateral, submaximal (50% maximal voluntary isometric contraction [MVIC]) intermittent, isometric, leg extensions with and without BFR. sMMG was recorded and examined across percent time to exhaustion (%TTE) in 20% increments. Separate 2-way repeated measures ANOVA models were constructed: (condition [BFR, non-BFR]) × (time [20, 40, 60, 80, and 100% TTE]) to examine absolute (m·s-2) and normalized (% of pretest MVIC) sMMG amplitude in theX-(sMMG-X),Y-(sMMG-Y), andZ-(sMMG-Z) axes.Main results. The absolute sMMG-X amplitude responses were attenuated with the application of BFR (mean ± SD = 0.236 ± 0.138 m·s-2) relative to non-BFR (0.366 ± 0.199 m·s-2, collapsed across time) and for sMMG-Y amplitude at 60%-100% of TTE (BFR range = 0.213-0.232 m·s-2versus non-BFR = 0.313-0.445 m·s-2). Normalizing sMMG to pretest MVIC removed most, but not all the attenuation which was still evident for sMMG-Y amplitude at 100% of TTE between BFR (72.9 ± 47.2%) and non-BFR (98.9 ± 53.1%). Interestingly, sMMG-Z amplitude was not affected by the application of BFR and progressively decreased across %TTE (0.332 ± 0.167 m·s-2to 0.219 ± 0.104 m·s-2, collapsed across condition.)Significance. The application of BFR attenuated sMMG-X and sMMG-Y amplitude, although normalizing sMMG removed most of this attenuation. Unlike theXandY-axes, sMMG-Z amplitude was not affected by BFR and progressively decreased across each exercise bout potentially tracking the development of muscle fatigue.
Collapse
Affiliation(s)
- Ethan C Hill
- School of Kinesiology & Rehabilitation Sciences, University of Central Florida, Orlando, FL 32816, United States of America
- Florida Space Institute, Partnership I, Research Parkway, University of Central Florida, Orlando, FL 32826, United States of America
- College of Medicine, 6850 Lake Nona Blvd, University of Central Florida, Orlando, FL 32827, United States of America
| | - Chris E Proppe
- School of Kinesiology & Rehabilitation Sciences, University of Central Florida, Orlando, FL 32816, United States of America
| | - Paola M Rivera
- School of Kinesiology & Rehabilitation Sciences, University of Central Florida, Orlando, FL 32816, United States of America
| | - Sean M Lubiak
- School of Kinesiology & Rehabilitation Sciences, University of Central Florida, Orlando, FL 32816, United States of America
| | - David H Gonzalez Rojas
- School of Kinesiology & Rehabilitation Sciences, University of Central Florida, Orlando, FL 32816, United States of America
| | - John E Lawson
- School of Kinesiology & Rehabilitation Sciences, University of Central Florida, Orlando, FL 32816, United States of America
| | - Hwan Choi
- College of Engineering, Mechanical and Aerospace, 4328 Scorpius St, University of Central Florida, Orlando, FL 32816, United States of America
| | - Hansen Mansy
- College of Engineering, Mechanical and Aerospace, 4328 Scorpius St, University of Central Florida, Orlando, FL 32816, United States of America
| | - Joshua L Keller
- College of Education and Professional Studies, University of South Alabama, Mobile, AL 36618, United States of America
- College of Medicine, Department of Physiology and Cell Biology, University of South Alabama, Mobile, AL 36618, United States of America
| |
Collapse
|
2
|
Rezaei S, Gholamalizadeh M, Tabrizi R, Nowrouzi-Sohrabi P, Rastgoo S, Doaei S. The effect of L-arginine supplementation on maximal oxygen uptake: A systematic review and meta-analysis. Physiol Rep 2021; 9:e14739. [PMID: 33587327 PMCID: PMC7883807 DOI: 10.14814/phy2.14739] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 01/07/2021] [Accepted: 01/11/2021] [Indexed: 12/16/2022] Open
Abstract
Background The efficacy and safety of L‐arginine supplements and their effect on maximal oxygen uptake (VO2 max) remained unclear. This systematic review aimed to investigate the effect of L‐arginine supplementation (LAS) on VO2 max in healthy people. Methods We searched PubMed, Scopus, Web of Science, Cochrane, Embase, ProQuest, and Ovid to identify all relevant literature investigating the effect of LAS on VO2 max. This meta‐analysis was conducted via a random‐effects model for the best estimation of desired outcomes and studies that meet the inclusion criteria were considered for the final analysis. Results The results of 11 randomized clinical trials indicated that LAS increased VO2 max compared to the control group. There was no significant heterogeneity in this meta‐analysis. Subgroup analysis detected that arginine in the form of LAS significantly increased VO2 max compared to the other forms (weighted mean difference = 0.11 L min−1, I2 = 0.0%, p for heterogeneity = 0.485). Conclusions This meta‐analysis indicated that supplementation with L‐arginine could increase VO2 max in healthy people. Further studies are warranted to confirm this finding and to identify the underlying mechanisms. This meta‐analysis indicated that the supplementation of L‐arginine could increase VO2 max in healthy people
Collapse
Affiliation(s)
- Shahla Rezaei
- Student Research Committee, Department of Clinical Nutrition, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.,Nutrition Research Center, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Maryam Gholamalizadeh
- Student Research Committee, Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Tabrizi
- Non-Communicable Diseases Research Center, Fasa University of Medical Sciences, Fasa, Iran
| | - Peyman Nowrouzi-Sohrabi
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Samira Rastgoo
- Department of Clinical Nutrition and Dietetics, National Nutrition and Food Technology Research Institute Shahid Beheshti University of Medical Science, Tehran, Iran
| | - Saeid Doaei
- Student Research Committee, Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| |
Collapse
|
3
|
Camic CL, Kovacs AJ, VanDusseldorp TA, Hill EC, Enquist EA. Application of the neuromuscular fatigue threshold treadmill test to muscles of the quadriceps and hamstrings. JOURNAL OF SPORT AND HEALTH SCIENCE 2020; 9:628-633. [PMID: 33308813 PMCID: PMC7749211 DOI: 10.1016/j.jshs.2017.06.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 03/28/2017] [Accepted: 04/28/2017] [Indexed: 06/12/2023]
Abstract
PURPOSE The purposes of the present study were: (1) to determine whether the physical working capacity at the fatigue threshold (PWCFT) model that has been used for estimating the onset of neuromuscular fatigue in the vastus lateralis (VL) during incremental treadmill running could also be applied to the vastus medialis (VM), biceps femoris (BF), and semitendinosus (ST) muscles; and (2) if applicable, to compare the running velocities associated with the PWCFT among these muscles. METHODS Eleven subjects (age 21.7 ± 1.8 years) performed an incremental treadmill test to exhaustion with electromyographic signals recorded from the VL, VM, BF, and ST. RESULTS The results indicated there were no significant (p > 0.05) mean differences in the running velocities associated with the PWCFT for the VL (14.4 ± 2.0 km/h), VM (14.3 ± 1.9 km/h), BF (13.8 ± 1.8 km/h), and ST (14.7 ± 2.3 km/h). In addition, there were significant inter-correlations (r = 0.68-0.88) among running velocities associated with the PWCFT of each muscle. Individual results also indicated that 9 of the 11 subjects exhibited identical PWCFT values for at least 3 of the 4 muscles, but there were no uniform patterns for any intra-individual differences. CONCLUSION The findings of the present study suggested that the PWCFT test is a viable method to identify neuromuscular fatigue in the quadriceps and hamstrings during incremental treadmill exercise and results in consistent PWCFT values among these muscles.
Collapse
Affiliation(s)
- Clayton L Camic
- Human Performance Laboratory, Exercise and Sport Science, University of Wisconsin-La Crosse, La Crosse, Wisconsin 54601, USA.
| | - Attila J Kovacs
- Human Performance Laboratory, Exercise and Sport Science, University of Wisconsin-La Crosse, La Crosse, Wisconsin 54601, USA
| | - Trisha A VanDusseldorp
- Department of Exercise Science and Sport Management, Kennesaw State University, Kennesaw, Georgia 30144, USA
| | - Ethan C Hill
- Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, Nebraska 68583, USA
| | - Evan A Enquist
- Department of Kinesiology, University of Alabama, Tuscaloosa, Alabama 35487, USA
| |
Collapse
|
4
|
Veldema J, Bösl K, Kugler P, Ponfick M, Gdynia H, Nowak DA. Cycle ergometer training vs resistance training in ICU-acquired weakness. Acta Neurol Scand 2019; 140:62-71. [PMID: 30977897 DOI: 10.1111/ane.13102] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 03/26/2019] [Accepted: 04/08/2019] [Indexed: 01/09/2023]
Abstract
OBJECTIVES We investigated the effectiveness of cycle ergometer training and resistance training to enhance the efficiency of standard care to improve walking ability, muscular strength of the lower limbs, cardiovascular endurance and health-related quality of life during inpatient rehabilitation in intensive care unit acquired weakness. MATERIALS & METHODS Thirty-nine patients with severe to moderate walking disability were enrolled in one of the three experimental groups: (a) ergometer training group, (b) resistance training group and (c) control group (standard care only). Intervention was applied 5 days a week over a 4-week period during inpatient neurological rehabilitation. We evaluated walking ability (Functional Ambulation Category test, timed up and go test, 10-metre walk test and 6-minute walk test), muscle strength (Medical Research Council and maximum muscle strength tests), cardiovascular endurance and muscular endurance of the lower limbs at the fatigue threshold (physical working capacity at fatigue threshold) and quality of life (medical outcomes study SF-36 form). All tests were performed at baseline, after two weeks of treatment and at the end of the 4-week intervention period. RESULTS Ergometer training and resistance training enhanced the effectiveness of standard care in order to improve (a) lower limb muscle strength, (b) walking ability and (c) cardiorespiratory fitness during inpatient rehabilitation of intensive care acquired weakness. In addition, ergometer training may be superior to resistance training. CONCLUSIONS Our data encourage more research to develop and implement these training tools in rehabilitation programmes for intensive care acquired weakness.
Collapse
Affiliation(s)
| | | | | | | | | | - Dennis Alexander Nowak
- VAMED Klinik Kipfenberg Kipfenberg Germany
- Department of Neurology University Hospital, Philipps‐University Marburg Germany
| |
Collapse
|