keyword
https://read.qxmd.com/read/38534566/the-influence-of-cold-therapy-on-the-physical-working-capacity-at-the-electromyographic-threshold-for-consecutive-exercise-sessions
#1
JOURNAL ARTICLE
Rami E Maasri, Jonathan R Jarvie, Jacob S Karski, Logan J Smith, Moh H Malek
BACKGROUND: The purpose of this study was to determine whether cold therapy after the first exercise test influences the physical working capacity at the fatigue threshold (PWCFT ) during the second exercise test. We hypothesized that cold therapy would delay the onset of PWCFT for the second exercise test relative to the control visit (i.e., no cold therapy). METHODS: Eight healthy college-aged men volunteered for the present study. For each of the two visits, subjects performed incremental, single-leg, knee-extensor ergometer, followed by either resting for 30 min (control visit) or having a cold pack applied for 15 min and then resting for 15 min (experimental visit)...
March 21, 2024: Bioengineering
https://read.qxmd.com/read/38427367/acute-effects-of-sprint-interval-training-and-blood-flow-restriction-on-neuromuscular-and-muscle-function
#2
JOURNAL ARTICLE
David H Gonzalez Rojas, Aaron M Wizenberg, Paola M Rivera, Christopher E Proppe, John E Lawson, Matt S Stock, Jeffrey R Stout, François Billaut, Ethan C Hill
UNLABELLED: BFR) applied during sprint interval training (SIT) on performance and neuromuscular function. METHODS: Fifteen men completed a randomized bout of SIT with CBFR, IBFR, and without BFR (No-BFR), consisting of 2, 30-s maximal sprints on a cycle ergometer with a resistance of 7.5% of body mass. Concentric peak torque (CPT), maximal voluntary isometric contraction (MVIC) torque, and muscle thickness (MT) were measured before and after SIT, including surface electromyography (sEMG) recorded during the strength assessments...
March 1, 2024: Journal of Musculoskeletal & Neuronal Interactions
https://read.qxmd.com/read/37015012/listening-to-music-pretask-on-neuromuscular-fatigue-during-exercise-preferred-vs-nonpreferred-music
#3
JOURNAL ARTICLE
Teresa L Diehl, Jennifer N Yu, Frank M Storer, Moh H Malek
Diehl, TL, Yu, JN, Storer, FM, and Malek, MH. Listening to music pretask on neuromuscular fatigue during exercise: preferred vs. nonpreferred music. J Strength Cond Res 37(7): 1537-1542, 2023-Studies indicate that listening to music can elicit various physiological responses ranging from distracting the subject from the sensation of fatigue to changes in specific regions of the brain. Indeed, the use of music, as an ergogenic aid, to improve human performance has been shown to be a powerful tool. Many studies on the effect of music on human performance have had subjects listen to music in-task (i...
July 1, 2023: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/34570058/the-evolution-of-the-physical-work-capacity-at-the-fatigue-threshold-test-past-present-and-future
#4
REVIEW
Jennie E Feldpausch, Amanda L Blok, Emily L Frederick, Jared W Coburn, Moh H Malek
Feldpausch, JE, Blok, AL, Frederick, EL, Coburn, JW, and Malek, MH. The evolution of the physical work capacity at the fatigue threshold test: past, present, and future. J Strength Cond Res 35(12): 3529-3536, 2021-The assessment of neuromuscular fatigue using surface electromyography has evolved over the past 40 years while maintaining some of the original key features. In this mini-review article, the goal will be to briefly present a history and systems of the physical working capacity at the fatigue threshold (PWCFT)...
December 1, 2021: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/33370007/perceived-consumption-of-a-high-dose-caffeine-drink-delays-neuromuscular-fatigue
#5
JOURNAL ARTICLE
Hussein M Elhaj, Osama Imam, Brad W Page, Joseph M Vitale, Moh H Malek
Elhaj, HM, Imam, O, Page, BW, Vitale, JM, and Malek, MH. Perceived consumption of a high-dose caffeine drink delays neuromuscular fatigue. J Strength Cond Res XX(X): 000-000, 2020-The placebo effect is a concept in which a desired outcome arises, mainly from the belief that the treatment (i.e., supplement or drug) was beneficial although no active ingredient was given. The results of studies related to the placebo effect primarily examine functional performance. What remains unanswered, however, is whether these changes in performance are associated with neuromuscular alterations in the exercised muscles...
December 22, 2020: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/33308813/application-of-the-neuromuscular-fatigue-threshold-treadmill-test-to-muscles-of-the-quadriceps-and-hamstrings
#6
JOURNAL ARTICLE
Clayton L Camic, Attila J Kovacs, Trisha A VanDusseldorp, Ethan C Hill, Evan A Enquist
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...
December 2020: Journal of Sport and Health Science
https://read.qxmd.com/read/27422091/the-dmax-method-is-a-valid-procedure-to-estimate-physical-working-capacity-at-fatigue-threshold
#7
JOURNAL ARTICLE
Joshua J Riffe, Jeffrey R Stout, David H Fukuda, Edward H Robinson, Amelia A Miramonti, Kyle S Beyer, Ran Wang, David D Church, Tyler W D Muddle, Jay R Hoffman
INTRODUCTION: The purpose of this study was to determine the validity of the maximal distance-electromyography (Dmax-EMG) method for estimating physical working capacity at fatigue threshold (PWCFT ). METHODS: Twenty-one men and women (age 22.9 ± 3.0 years) volunteered to perform 12 sessions of high-intensity interval training (HIIT) over 4 weeks. Before and after HIIT training, a graded exercise test (GXT) was used to estimate PWCFT using the Dmax method and the original (ORG) method...
March 2017: Muscle & Nerve
https://read.qxmd.com/read/27361614/methodological-comparison-of-pwcft-estimation-in-response-to-high-intensity-interval-training-3045-board-110-june-3-2-00-pm-3-30-pm
#8
JOURNAL ARTICLE
Joshua J Riffe, Jeffrey R Stout, Edward H Robinson, Amelia A Miramonti, Kyle S Beyer, Ran Wang, David D Church, Tyler W D Muddle, David H Fukuda, Jay R Hoffman
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/26609964/estimation-of-the-neuromuscular-fatigue-threshold-from-an-incremental-cycling-test-using-1-minute-exercise-periods
#9
JOURNAL ARTICLE
Iban Latasa, Alfredo Cordova, Gerardo Villa, Gregorio Quintana, Javier Rodriguez-Falces
BACKGROUND: The objectives of this study were: 1) to evaluate the method used for estimating the neuromuscular fatigue threshold from surface electromyographic amplitude (the PWCFT test) during a single incremental cycling workout using 1-minute exercise periods, and 2) to investigate the possible associations between PWCFT and metabolic (onset of blood lactate accumulation [OBLA]) and ventilatory (ventilatory threshold [VT] and respiratory compensation point [RCP]) variables. METHODS: Sixteen cyclists performed incremental cycle ergometer rides to exhaustion with bipolar surface sEMG signals recorded from the vastus lateralis...
January 2017: Journal of Sports Medicine and Physical Fitness
https://read.qxmd.com/read/26418369/effects-of-4-weeks-of-high-intensity-interval-training-and-%C3%AE-hydroxy-%C3%AE-methylbutyric-free-acid-supplementation-on-the-onset-of-neuromuscular-fatigue
#10
RANDOMIZED CONTROLLED TRIAL
Amelia A Miramonti, Jeffrey R Stout, David H Fukuda, Edward H Robinson, Ran Wang, Michael B La Monica, Jay R Hoffman
This study investigated the effects of high-intensity interval training (HIIT) and β-hydroxy-β-methylbutyric free acid (HMB) supplementation on physical working capacity at the onset of neuromuscular fatigue threshold (PWC(FT)). Thirty-seven participants (22 men, 15 women; 22.8 ± 3.4 years) completed an incremental cycle ergometer test (graded exercise test [GXT]); electromyographic amplitude from the right vastus lateralis was recorded. Assessments occurred preceding (PRE) and after 4 weeks of supplementation (POST)...
March 2016: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/25957058/resistance-training-improves-capacity-to-delay-neuromuscular-fatigue-in-older-adults
#11
RANDOMIZED CONTROLLED TRIAL
Nadia S Emerson, Jeffrey R Stout, David H Fukuda, Edward H Robinson, Iv, Tyler C Scanlon, Kyle S Beyer, Maren S Fragala, Jay R Hoffman
The purpose of this study was to investigate the effects of short term resistance exercise on neuromuscular fatigue threshold (PWCFT), strength, functional performance, and body composition in older adults. Twenty-three participants (71.2 ± 6.0 yr) were randomly assigned to 6 weeks of resistance exercise (EXE) or control (CONT). A submaximal cycle ergometer test, physical working capacity at fatigue threshold, was used to determine PWCFT. Strength was assessed with predicted leg extension 1-RM and functional performance with time to complete 5 chair rises (CHAIR) and walk an 8-ft course (WALK)...
July 2015: Archives of Gerontology and Geriatrics
https://read.qxmd.com/read/25781198/acute-effects-of-an-arginine-based-supplement-on-neuromuscular-ventilatory-and-metabolic-fatigue-thresholds-during-cycle-ergometry
#12
RANDOMIZED CONTROLLED TRIAL
Roksana B Zak, Clayton L Camic, Ethan C Hill, Molly M Monaghan, Attila J Kovacs, Glenn A Wright
The purpose of the present study was to examine the effects of an acute dose of an arginine-based supplement on the physical working capacity at the fatigue threshold (PWCFT), lactate threshold (LT), ventilatory threshold (VT), and peak oxygen uptake during incremental cycle ergometry. This study used a double-blinded, placebo-controlled, within-subjects crossover design. Nineteen untrained men (mean age ± SD = 22.0 ± 1.7 years) were randomly assigned to ingest either the supplement (3.0 g of arginine, 300 mg of grape seed extract, and 300 mg of polyethylene glycol) or placebo (microcrystalline cellulose) and performed an incremental test on a cycle ergometer for determination of PWCFT, LT, VT, and peak oxygen uptake...
April 2015: Applied Physiology Nutrition and Metabolism
https://read.qxmd.com/read/25186664/c-terminal-agrin-fragment-is-inversely-related-to-neuromuscular-fatigue-in-older-men
#13
JOURNAL ARTICLE
Jeffrey R Stout, Maren S Fragala, Jay R Hoffman, Edward H Robinson, William P Mccormack, Jeremy R Townsend, Adam R Jatjner, Nadia S Emerson, Leonardo P Oliveira, David H Fukuda
INTRODUCTION: The aim of this study was to examine the relationship between serum C-terminal agrin fragment (CAF) concentrations and neuromuscular fatigue in older adults. METHODS: Twenty-two healthy older men and women volunteered for this study. Resting fasted blood samples were collected and prepared for measurement of serum CAF concentration by a commercially available ELISA kit. The onset of neuromuscular fatigue was measured by monitoring electromyographic fatigue curves from the vastus lateralis muscle using the physical working capacity at fatigue threshold (PWCFT ) test...
January 2015: Muscle & Nerve
https://read.qxmd.com/read/24856645/physical-working-capacity-at-fatigue-threshold-pwcft-is-associated-with-sarcopenia-related-body-composition-and-measures-of-functionality-in-older-adults
#14
JOURNAL ARTICLE
Nadia S Emerson, David H Fukuda, Jeffrey R Stout, Edward H Robinson, William P McCormack, Tyler C Scanlon, Ashlee M Warren, Adam J Wells, Adam M Gonzalez, Gerald T Mangine, Maren S Fragala, Jay R Hoffman
The relationship between PWCFT and common measures used to assess sarcopenia in older adults were examined. Fifty-eight older adults [age: 71.1 ± 6.2 years; body mass index (BMI): 28.0 ± 5.4 kg/m(2)] completed the testing procedures. Sarcopenia-related body composition was measured by dual-energy X-ray absorptiometry and participants performed a discontinuous cycle ergometry test to determine PWCFT. Functionality assessments included maximal isometric grip strength (GRIP) and sit-to-stand (STS) repetitions in 30s...
September 2014: Archives of Gerontology and Geriatrics
https://read.qxmd.com/read/24796987/effects-of-6-weeks-of-aerobic-exercise-combined-with-conjugated-linoleic-acid-on-the-physical-working-capacity-at-fatigue-threshold
#15
RANDOMIZED CONTROLLED TRIAL
Nathaniel D M Jenkins, Samuel L Buckner, Robert B Baker, Haley C Bergstrom, Kristen C Cochrane, Joseph P Weir, Terry J Housh, Joel T Cramer
The purpose of this study was to examine the effects of conjugated linoleic acid (CLA) supplementation in conjunction with 6 weeks of aerobic exercise training on the physical working capacity at the fatigue threshold (PWCFT), timed sit-ups, and the standing long jump. Thirty-three untrained to moderately trained men (mean ± SD; age = 21.6 ± 2.8 years) participated in this double-blind, placebo-controlled study and were randomly assigned to either a CLA (Clarinol A-80; n = 17) or placebo (PLA; sunflower oil; n = 16) group...
August 2014: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/24021781/an-examination-of-neuromuscular-and-metabolic-fatigue-thresholds
#16
JOURNAL ARTICLE
Haley C Bergstrom, Terry J Housh, Kristen C Cochrane, Nathaniel D M Jenkins, Robert W Lewis, Daniel A Traylor, Jorge M Zuniga, Richard J Schmidt, Glen O Johnson, Joel T Cramer
This study examined the relationships among the physical working capacity at the fatigue threshold (PWCFT), the power outputs associated with the gas exchange threshold (PGET) and the respiratory compensation point (PRCP), and critical power (CP) to identify possible physiological mechanisms underlying the onset of neuromuscular fatigue. Ten participants (mean ± SD age: 20 ± 1 years) performed a maximal incremental cycle ergometer test to determine the PWCFT, PGET, and PRCP. CP was determined from the 3 min all-out test...
October 2013: Physiological Measurement
https://read.qxmd.com/read/23832078/oral-nutritional-supplement-fortified-with-beta-alanine-improves-physical-working-capacity-in-older-adults-a-randomized-placebo-controlled-study
#17
RANDOMIZED CONTROLLED TRIAL
William P McCormack, Jeffrey R Stout, Nadia S Emerson, Tyler C Scanlon, Ashlee M Warren, Adam J Wells, Adam M Gonzalez, Gerald T Mangine, Edward H Robinson, Maren S Fragala, Jay R Hoffman
This study examined the effects of an oral nutritional supplement fortified with two different doses of beta-alanine on body composition, muscle function and physical capacity in older adults. Using a double-blind placebo controlled design, 60 men and women (age ± SD = 70.7 ± 6.2 yrs) were randomly assigned to one of three treatment groups: 1) oral nutritional supplement (ONS; n = 20) (8 oz; 230 kcal; 12 g PRO; 31 g CHO; 6 g FAT), 2) ONS plus 800 mg beta-alanine (ONS800; n = 19), and 3) ONS plus 1200 mg beta-alanine (ONS1200; n = 21)...
September 2013: Experimental Gerontology
https://read.qxmd.com/read/20589588/a-mechanomyographic-fatigue-threshold-test-for-cycling
#18
JOURNAL ARTICLE
J M Zuniga, T J Housh, C L Camic, C R Hendrix, R J Schmidt, M Mielke, G O Johnson
The purposes of this study were twofold: 1) to derive the mechanomyographic mean power frequency fatigue threshold (MMG MPFFT) for submaximal cycle ergometry; and 2) to compare the power outputs associated to the MMG MPFFT to other neuromuscular and gas exchange fatigue thresholds. 9 adults (5 men and 4 women; mean+/-SD age=23.7+/-3.7 years; body weight=66.3+/-8.2 kg) performed an incremental cycle ergometry test to exhaustion while expired gas samples, electromyographic (EMG), and MMG signals were measured from the vastus lateralis muscle...
September 2010: International Journal of Sports Medicine
https://read.qxmd.com/read/20386475/effects-of-arginine-based-supplements-on-the-physical-working-capacity-at-the-fatigue-threshold
#19
RANDOMIZED CONTROLLED TRIAL
Clayton L Camic, Terry J Housh, Jorge M Zuniga, Russell C Hendrix, Michelle Mielke, Glen O Johnson, Richard J Schmidt
The purpose of the present study was to examine the effects of daily oral administration of arginine-based supplements for 4 weeks on the physical working capacity at the fatigue threshold (PWCFT). The PWCFT test is an electromyographic (EMG) procedure for estimating the highest power output that can be maintained without neuromuscular evidence of fatigue. The study used a double-blind, placebo-controlled design. Fifty college-aged men (mean age +/- SD = 23.9 +/- 3.0) were randomized into 1 of 3 groups: (a) placebo (n = 19); (b) 1...
May 2010: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/18992136/the-effect-of-beta-alanine-supplementation-on-neuromuscular-fatigue-in-elderly-55-92-years-a-double-blind-randomized-study
#20
JOURNAL ARTICLE
Jeffrey R Stout, B Sue Graves, Abbie E Smith, Michael J Hartman, Joel T Cramer, Travis W Beck, Roger C Harris
BACKGROUND: Ageing is associated with a significant reduction in skeletal muscle carnosine which has been linked with a reduction in the buffering capacity of muscle and in theory, may increase the rate of fatigue during exercise. Supplementing beta-alanine has been shown to significantly increase skeletal muscle carnosine. The purpose of this study, therefore, was to examine the effects of ninety days of beta-alanine supplementation on the physical working capacity at the fatigue threshold (PWCFT) in elderly men and women...
November 7, 2008: Journal of the International Society of Sports Nutrition
keyword
keyword
24820
1
2
Fetch more papers »
Fetching more papers... Fetching...
Remove bar
Read by QxMD icon Read
×

Save your favorite articles in one place with a free QxMD account.

×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"

We want to hear from doctors like you!

Take a second to answer a survey question.