Effect of Trunk-Muscle Fatigue and Lactic Acid Accumulation on Balance in Healthy Subjects

Objective:This study sought to determine the effects of trunk-muscle fatigue and blood lactic acid elevation on static and dynamic balance.Intervention:Fatigue was induced by an isokinetic protocol, and static and dynamic balance were assessed during bilateral stance using a Kinesthetic Ability Trainer. Subjects participated in a fatigue protocol in which continuous concentric movements at 60°/s were performed until the torque output for both trunk flexion and extension dropped below 25% of the calculated peak torque for 3 consecutive movements.Measures:Before and immediately after the fatigue protocol, blood lactic acid measurements and static- and dynamic-balance measurements were recorded.Results:An increase in lactic acid levels was detected in all subjects. According to a dependent-samples t test, significant differences in balance and lactic acid values were found after the fatigue protocol. There was no correlation between lactic acid accumulation (change between prefatigue and postfatigue levels) and balance-score differences.Conclusion:Trunk-muscle fatigue has an adverse effect on static and dynamic balance.

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The effect of Soft Tissue Manipulation and Rest on Knee Extensor Muscles Fatigue: Do torque Parameters and Induced Perception Following Muscle Fatigue Have Enough Reliability?

10.21203/rs.2.11322/v1 ◽

2019 ◽

Author(s):

Cobra Ghasemi ◽

Ali Amiri ◽

Javad Sarrafzadeh ◽

Hasan Jafari ◽

Mehdi Dadgoo

Keyword(s):

Soft Tissue ◽

Muscle Fatigue ◽

Visual Analog Scale ◽

Average Power ◽

Knee Extensor ◽

Peak Torque ◽

Analog Scale ◽

Fatigue Protocol ◽

Tissue Manipulation ◽

The Stability

Abstract Background The aim of the study is comparison of the effects of soft tissue manipulation and rest on the knee extensor muscle fatigue after maximal isokinetic contractions. Methods Fifteen healthy females aged 20-30 years selected for research. This study implemented a semi-experimental test-retest measurement method. Each of the volunteers was evaluated three sessions. The first session was to familiarize the volunteers with the test and isokinetics. For the main test, each of the volunteers was evaluated twice with a one-week interval between evaluations. In each session, after warm-up, perceived fatigue using a visual analog scale (VAS), average of peak torque (APT), and average power (AP) for maximal concentric isokinetic output of the quadriceps was measured at a velocity of 60 degrees per second. Then¸ in order to apply the fatigue protocol, the subjects were asked to perform successive maximal quadriceps contractions until three consecutive quadriceps torque outputs reached below 50 percent maximal torque output. Afterwards, for remeasurement, the average of peak torque and average power were calculated. The extent of perceived fatigue was evaluated as before. Subjects then either rested or received soft tissue manipulation on the knee extensors for a 15-minute duration. After intervention (soft tissue manipulation or rest) parameters were evaluated for third time. Results The stability of average peak torque¸ average power, and visual analog scale before performing fatigue protocol was 85%, 83%, and 31.9%, respectively. The stability after fatigue was 43%, 50%, and 93%, respectively. After maximal fatigue and a decrease in torque output to below 50 percent maximal torque, 15 minutes of soft tissue manipulation could change the APT after fatigue from a mean of 58.3 (nm) to 91.5 (nm), the AP from 39.4 to 63.6 (nm/s), and the VAS from 90.0 to 12 (mm). But 15 minutes of rest could change the APT from 52.5 to 68.1 (nm), the AP from 37.6 to 48 (nm/s) and the VAS from 90.0 to 27.3 (mm). Conclusion The study showed that soft tissue manipulation was more effective than rest as a strategy to return muscles to a normal state and caused more relief in perceived fatigue.

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Effect of vibration vs non-vibration foam rolling techniques on flexibility, dynamic balance and perceived joint stability after fatigue

PeerJ ◽

10.7717/peerj.8000 ◽

2019 ◽

Vol 7 ◽

pp. e8000 ◽

Cited By ~ 2

Author(s):

Ana María de Benito ◽

Raúl Valldecabres ◽

Diego Ceca ◽

Jim Richards ◽

Joaquín Barrachina Igual ◽

...

Keyword(s):

Lumbar Spine ◽

Muscle Fatigue ◽

Repeated Measures ◽

Dynamic Balance ◽

Ankle Dorsiflexion ◽

Repeated Measures Anova ◽

Fatigue Protocol ◽

Ankle Stability ◽

Treatment Conditions ◽

Exercise Induced

Background Foam roller and vibration techniques are currently used to assist in recovery after fatigue. The main purpose of this study was to determine the effects of the use of a foam roller with and without vibration on dynamic balance, ankle dorsiflexion, hamstring and lumbar spine flexibility and perceived knee and ankle stability after an induced fatigue protocol. Methods A total of 24 healthy recreationally active participants (17 males and seven females) were recruited to a randomized cross over trial consisting of; no treatment (NT), foam roller treatment (FR) and vibration foam roller treatment (VFR). The assessments included; the Sit & Reach test, Y balance test and post-treatment perceived knee and ankle stability. Measurements were taken after a standardized warm up (baseline) and repeated following an exercise-induced muscle fatigue protocol consisting of repeated lunges until volitional fatigue. The three treatment conditions were assessed on three separate days in a randomized order. A 3 × 3 repeated measures ANOVA was used to investigate differences between the three treatments over the three time points and a one factor repeated measures ANOVA was used to determine any differences between treatments using the Global Rate of Change scale when considering perceived stability. Results FR and VFR conditions both showed a greater ankle dorsiflexion range of motion (ROM) (p < 0.001), greater posteromedial and posterolateral reach distances (p < 0.001) and a better knee and ankle perceived stability (p < 0.001) when compared to the NT condition. A trend toward significance was observed in the hamstring and lumbar spine flexibility (p = 0.074) in both treatment conditions when compared to the NT condition. However, no differences were seen between the FR and VFR conditions. Conclusions Both FR conditions seem to assist in exercise-induced muscle fatigue recovery with improvements in ROM, balance and perceived stability.

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Muscle Fatigue: Lactic Acid or Inorganic Phosphate the Major Cause?

Physiology ◽

10.1152/physiologyonline.2002.17.1.17 ◽

2002 ◽

Vol 17 (1) ◽

pp. 17-21 ◽

Cited By ~ 59

Author(s):

Håkan Westerblad ◽

David G. Allen ◽

Jan Lännergren

Keyword(s):

Skeletal Muscle ◽

Lactic Acid ◽

Muscle Fatigue ◽

Muscle Function ◽

Inorganic Phosphate ◽

Creatine Phosphate ◽

Intracellular Acidosis ◽

Skeletal Muscle Fatigue ◽

Mammalian Muscle ◽

Acid Accumulation

Intracellular acidosis due mainly to lactic acid accumulation has been regarded as the most important cause of skeletal muscle fatigue. Recent studies on mammalian muscle, however, show little direct effect of acidosis on muscle function at physiological temperatures. Instead, inorganic phosphate, which increases during fatigue due to breakdown of creatine phosphate, appears to be a major cause of muscle fatigue.

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Effect of knee muscle fatigue and lactic acid accumulation on balance in healthy subjects

Isokinetics and Exercise Science ◽

10.3233/ies-2006-0238 ◽

2006 ◽

Vol 14 (4) ◽

pp. 301-306 ◽

Cited By ~ 8

Author(s):

Ozgur Surenkok ◽

Ayşe Kin Isler ◽

Aydan Aytar ◽

Zuhal Gultekin ◽

Mahmut N. Akman

Keyword(s):

Lactic Acid ◽

Muscle Fatigue ◽

Healthy Subjects ◽

Acid Accumulation ◽

Knee Muscle

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The Changes of Trunk Motion Rhythm and Spinal Loading During Trunk Flexion and Extension Motions Caused by Lumbar Muscle Fatigue

Annals of Biomedical Engineering ◽

10.1007/s10439-015-1248-0 ◽

2015 ◽

Vol 43 (9) ◽

pp. 2112-2119 ◽

Cited By ~ 12

Author(s):

Boyi Hu ◽

Xiaopeng Ning

Keyword(s):

Muscle Fatigue ◽

Trunk Flexion ◽

Spinal Loading ◽

Trunk Motion ◽

Lumbar Muscle ◽

Flexion And Extension

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Alterations in peak torque occur without hematological changes after muscle fatigue

Revista Brasileira de Medicina do Esporte ◽

10.1590/1517-869220172303171086 ◽

2017 ◽

Vol 23 (3) ◽

pp. 180-183

Author(s):

Frank Shiguemitsu Suzuki ◽

Marcelo Martins Kalytczak ◽

Rodrigo Augusto Ferreira Palomares ◽

Marcos Rodolfo Paunksnis ◽

Sergio Matias Silva ◽

...

Keyword(s):

Muscle Fatigue ◽

Hematological Parameters ◽

Peak Torque ◽

Knee Extension ◽

Muscular Fatigue ◽

Adult Males ◽

Fatigue Protocol ◽

Isometric Torque ◽

Hematological Changes ◽

Inactive Group

ABSTRACT Introduction: Muscular fatigue during voluntary muscle contractions is a complex and multifactorial phenomenon associated with central changes and adaptations of the neuromuscular system. Objective: The aim of this study was to analyze the changes in both peak torque and hematological parameters in active and inactive healthy subjects following a muscular fatigue protocol. Methods: Twenty-one healthy adult males performed a muscle fatigue protocol (10 sets, 10 repetitions of knee extension at 75% of the maximal isometric torque (MIT), 120º s-1 and 40 seconds of rest). Hematocrit (Ht), red blood cells (RBC) and leukocytes (L) analysis were evaluated before (B) and after (A) a fatigue test. Results: The inactive group presented impairment only in concentric muscular action of -41±4% in relation to the active (-23±3%) group. No differences were found in hematological parameters in inactive group (Ht, B: 45.00±0.01 vs. A: 47.00±0.01; RBC, B: 442±40 vs. A: 487±41; L, B: 7,565±2,878 vs. A: 8,015±4,224) and the active group (Ht, B: 45.00±0.63 vs. A: 47.00±0.01; RBC, B: 477±30 vs. A: 559±37; L, B: 6,418±3,557 vs. A: 6,632±4,460). Conclusion: Differences were found only in concentric actions between groups. Additionally, there were no relationships found in hematological parameters between groups.

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Age-Related Changes in Concentric and Eccentric Isokinetic Peak Torque of the Trunk Muscles in Healthy Older Versus Younger Men

Journal of Aging and Physical Activity ◽

10.1123/japa.2020-0421 ◽

2020 ◽

pp. 1-11

Author(s):

A. Dallaway ◽

J. Hattersley ◽

J. Tallis ◽

D. Renshaw ◽

C. Griffen ◽

...

Keyword(s):

Physical Activity ◽

Univariate Analysis ◽

Peak Torque ◽

Trunk Muscle ◽

Analysis Of Covariance ◽

Trunk Muscles ◽

Trunk Flexion ◽

Age Related ◽

Trunk Strength ◽

Age Related Changes

This study investigated age-related changes in trunk muscle function in healthy men and the moderating effect of physical activity. Twelve older (67.3 ± 6.0 years) and 12 younger (24.7 ± 3.1 years) men performed isokinetic trunk flexion and extension tests across a range of angular velocities (15°/s–180°/s) and contractile modes (concentric and eccentric). For concentric trunk extension, mixed-effects analysis of covariance revealed a significant interaction between Angular velocity × Age group (p = .026) controlling for physical activity. Follow-up univariate analysis of covariance revealed that the younger group produced significantly greater peak torque for all concentric extension conditions. Eccentric trunk strength was somewhat preserved in the older group. Age-related changes in trunk strength were independent of physical activity. The normal loss of trunk muscle strength in older age is muscle- and contractile-mode specific. These findings provide guidance for effective intervention strategies to offset adverse health outcomes related to trunk strength loss in older adults.

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Immediate Effect of Trunk Flexion And Extension Isometric Exercise Using An External Compression Device On Electromyography of The Hip Extensor And Trunk Range of Motion Of Healthy Subjects

10.21203/rs.3.rs-1179826/v1 ◽

2021 ◽

Author(s):

Tian-Zong Huang ◽

Suhn Yeop Kim

Keyword(s):

Range Of Motion ◽

Muscle Fatigue ◽

Healthy Subjects ◽

Isometric Exercise ◽

Trunk Flexion ◽

Endurance Test ◽

External Compression ◽

Compression Device ◽

Onset Timing ◽

Flexion And Extension

Abstract Background: Low back pain (LBP) is a very common symptom experienced by individuals across all age groups. Previous study established that using a device known as Active Therapeutic Movement version 2 (ATM®2) has been developed to improve pain and joint range of motion (ROM) in patients with LBP. However, no study has examined the physiological change in the muscle through ATM®2-based exercise thus far. This study aimed to determine the immediate effects of ATM®2 exercise on the contraction timing, back extension endurance, muscle fatigue, and trunk ROM of lumbar and lower limb muscles in healthy subjects.Methods: Thirty-six healthy subjects (mean age=23.16±2.3) volunteered to participate in this study. Subjects were instructed to perform ROM test using sit and reach test, back extensor endurance test using Biering-Sorensen test, erector spinae (ES), lumbar multifidus (LM) fatigue and onset time of Gluteus maximus (GM) in prone hip extension using electromyography before and after trunk flexion and extension isometric exercises.Results: The ROM in trunk flexion showed a significant increase by 7.9% after exercise compared to that before exercise (p<0.05). Relative GM contraction onset timing significantly decreased after exercise (p<0.05). The result of the Sorensen test after exercise showed a trend of increase in duration time. Muscle fatigue in the LM, however, showed a significant increase (p<0.05), whereas muscle fatigue in the ES was reduced without statistical significance.Conclusions: The results base on this study showed a significant increase in the trunk ROM after trunk flexion and extension isometric exercise using an external compression device, while the relative contraction onset timing in the GM significantly reduced. Furthermore, the muscle endurance test after exercise showed a trend of increase in the duration time with a decreasing trend in muscle fatigue in the ES. Exercise based on ATM®2 is an effective exercise protocol with an effect on biomechanics of healthy subjects. This exercise may be suitable in clinical practice for patients with LBP, for which long-term effects can be expected.

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