scholarly journals Effect of the subjective intensity of fatigue and interoceptive awareness on perceptual regulation and performance during sustained physical activity

2021 ◽  
Author(s):  
Aaron Greenhouse-Tucknott ◽  
Jake Butterworth ◽  
James Graeme Wrightson ◽  
Neil Andrew Harrison ◽  
Jeanne Dekerle
Keyword(s):  
Isometric Contraction ◽  
Subjective Experience ◽  
Endurance Performance ◽  
Interoceptive Awareness ◽  
Knee Extensors ◽  
Physical Endurance ◽  
Perception Of Effort ◽  
Subjective Intensity ◽  
Sensory Processes ◽  
The Relationship

Background: The subjective experience of fatigue impairs an individual’s ability to sustain physical endurance performance. However, precise understanding of exactly how the perception of fatigue limits performance remains unclear. Methods: Here, we examined whether subjective intensity of perceived fatigue, pre-induced through prior upper body activity, differentially impacted performance and altered perceptual (effort) and affective responses during a sustained, isometric contraction in lower body. We also explored whether (cardiac) interoceptive awareness moderated the relationship between the perception of fatigue and effort. Using a repeated-measures study design, thirty male participants completed three experimental conditions, with the intensity of the pre-induced state of fatigue manipulated to evoke severe (SEV), moderate (MOD) and minimal (control; CON) perceptions prior to the performance of a sustained, sub-maximal contraction in the dominant knee extensors. Results: Participants’ capacity to sustain the isometric contraction was significantly impaired (vs. CON, MOD: -9.5 ± 19.1%, p=0.007; SEV: -13.7 ± 17.2%, p<0.001), with perception of effort higher (SEV, MOD vs. CON: b=-0.90, p<0.001), when perceptions of fatigue were elevated. However, the effect on performance (SEV vs. MOD: -2.5 ± 19.9%, p=0.455) and effort perception (SEV vs. MOD: b=-0.06, p=0.612) was not dependent upon the manipulated intensity of the pre-induced state of fatigue. Perceived fatigue was shown to predict the perception of effort during the endurance task. However, disassociation of perceptual constructs was evidenced with perceived effort, but not fatigue, associated with endurance time (CON: r=-0.57, p=0.004; MOD: r=-0.69, p<0.001; SEV: r=-0.59, p=0.003). Interoceptive awareness was shown to attenuate the relationship between perceived fatigue and effort, but only when fatigue was elevated within the experimental manipulations (b=-4.45, p=0.005). Conclusions: Perception of fatigue indirectly limits endurance performance by exerting influence over sensory processes making a physical task appear more effortful. Moreover, this effect is influenced by individual awareness of interoceptive representations of bodily states.

scholarly journals Effect of the subjective intensity of fatigue and interoception on perceptual regulation and performance during sustained physical activity

PLoS ONE ◽  
2022 ◽  
Vol 17 (1) ◽  
pp. e0262303
Author(s):  
Aaron Greenhouse-Tucknott ◽  
Jake B. Butterworth ◽  
James G. Wrightson ◽  
Neil A. Harrison ◽  
Jeanne Dekerle
Keyword(s):  
Physical Activity ◽  
Repeated Measures ◽  
Subjective Experience ◽  
Endurance Performance ◽  
Physical Endurance ◽  
Affective Valence ◽  
Experimental Conditions ◽  
Sustained Contraction ◽  
Perceived Effort ◽  
Subjective Intensity

Background The subjective experience of fatigue impairs an individual’s ability to sustain physical endurance performance. However, precise understanding of the specific role perceived fatigue plays in the central regulation of performance remains unclear. Here, we examined whether the subjective intensity of a perceived state of fatigue, pre-induced through prior upper body activity, differentially impacted performance and altered perceived effort and affect experienced during a sustained, isometric contraction in lower body. We also explored whether (cardiac) interoception predicted the intensity of experienced perceptual and affective responses and moderated the relationships between constructs during physical activity. Methods Using a repeated-measures study design, thirty male participants completed three experimental conditions, with the intensity of a pre-induced state of fatigue manipulated to evoke moderate (MOD), severe (SEV) and minimal (control; CON) intensity of perceptions prior to performance of the sustained contraction. Results Performance of the sustained contraction was significantly impaired under a perceived state of fatigue, with reductions of 10% and 14% observed in the MOD and SEV conditions, respectively. Performance impairment was accompanied by greater perceived effort and more negative affective valence reported during the contraction. However, effects were limited to comparisons to CON, with no difference evident between the two experimental trials (i.e. MOD vs. SEV). Individuals’ awareness of their accuracy in judging resting heartbeats was shown to predict the subjective intensity of fatigue experienced during the endurance task. However, interoception did not moderate the relationships evident between fatigue and both perceived effort and affective valence. Conclusions A perceived state of fatigue limits endurance performance, influencing both how effortful activity is perceived to be and the affective experience of activity. Though awareness of interoceptive representations of bodily states may be important to the subjective experience of fatigue, interoception does not modulate the relationships between perceived fatigue and other perceptual (i.e. effort) and affective constructs.

Self-Control Strength Depletion Reduces Self-Efficacy and Impairs Exercise Performance

2015 ◽  
Vol 37 (5) ◽  
pp. 477-488 ◽  
Author(s):  
Jeffrey D. Graham ◽  
Steven R. Bray
Keyword(s):  
Stroop Task ◽  
Self Efficacy ◽  
Endurance Performance ◽  
Psychological Factor ◽  
Self Control ◽  
Physical Endurance ◽  
Isometric Handgrip ◽  
Negative Change ◽  
Control Strength ◽  
The Relationship

The purpose of this study was to investigate the role of task self-efficacy as a psychological factor involved in the relationship between self-control depletion and physical endurance. Participants (N = 37) completed two isometric handgrip endurance trials, separated by a Stroop task, which was either congruent (control) or incongruent (causing depletion). Task self-efficacy for the second endurance trial was measured following the Stroop task. Participants in the depletion condition reported lower task self-efficacy and showed a greater reduction in performance on the second endurance trial when compared with controls. Task self-efficacy also mediated the relationship between self-control depletion and endurance performance. The results of this study provide evidence that task self-efficacy is negatively affected following self-control depletion. We recommend that task self-efficacy be further investigated as a psychological factor accounting for the negative change in self-control performance of physical endurance and sport tasks following self-control strength depletion.

The Relationship Between Interoception and Metacognition

2016 ◽  
Vol 30 (2) ◽  
pp. 76-86 ◽  
Author(s):  
Judith Meessen ◽  
Verena Mainz ◽  
Siegfried Gauggel ◽  
Eftychia Volz-Sidiropoulou ◽  
Stefan Sütterlin ◽  
...  
Keyword(s):  
Memory Performance ◽  
Memory Task ◽  
Demographic Characteristics ◽  
Metacognitive Awareness ◽  
Interoceptive Awareness ◽  
Future Research ◽  
Heartbeat Perception ◽  
Interoceptive Accuracy ◽  
The Relationship

Abstract. Recently, Garfinkel and Critchley (2013) proposed to distinguish between three facets of interoception: interoceptive sensibility, interoceptive accuracy, and interoceptive awareness. This pilot study investigated how these facets interrelate to each other and whether interoceptive awareness is related to the metacognitive awareness of memory performance. A sample of 24 healthy students completed a heartbeat perception task (HPT) and a memory task. Judgments of confidence were requested for each task. Participants filled in questionnaires assessing interoceptive sensibility, depression, anxiety, and socio-demographic characteristics. The three facets of interoception were found to be uncorrelated and interoceptive awareness was not related to metacognitive awareness of memory performance. Whereas memory performance was significantly related to metamemory awareness, interoceptive accuracy (HPT) and interoceptive awareness were not correlated. Results suggest that future research on interoception should assess all facets of interoception in order to capture the multifaceted quality of the construct.

Electrically-induced quadriceps fatigue in the contralateral leg impairs ipsilateral knee extensors performance

2021 ◽  
Author(s):  
Fabio Giuseppe Laginestra ◽  
Markus Amann ◽  
Emine Kirmizi ◽  
Gaia Giuriato ◽  
Chiara Barbi ◽  
...  
Keyword(s):  
Muscle Activation ◽  
Central Fatigue ◽  
Endurance Performance ◽  
Voluntary Exercise ◽  
Peripheral Fatigue ◽  
Knee Extensors ◽  
Motor Drive ◽  
Time To Exhaustion ◽  
Crossover Effect ◽  
The Impact

Muscle fatigue induced by voluntary exercise, which requires central motor drive, causes central fatigue that impairs endurance performance of a different, non-fatigued muscle. This study investigated the impact of quadriceps fatigue induced by electrically-induced (no central motor drive) contractions on single-leg knee-extension (KE) performance of the subsequently exercising ipsilateral quadriceps. On two separate occasions, eight males completed constant-load (85% of maximal power-output) KE exercise to exhaustion. In a counterbalanced manner, subjects performed the KE exercise with no pre-existing quadriceps fatigue in the contralateral leg on one day (No-PreF), while on the other day, the same KE exercise was repeated following electrically-induced quadriceps fatigue in the contralateral leg (PreF). Quadriceps fatigue was assessed by evaluating pre- to post-exercise changes in potentiated twitch force (ΔQtw,pot; peripheral-fatigue), and voluntary muscle activation (ΔVA; central-fatigue). As reflected by the 57±11% reduction in electrically-evoked pulse force, the electrically-induced fatigue protocol caused significant knee-extensors fatigue. KE endurance time to exhaustion was shorter during PreF compared to No-PreF (4.6±1.2 vs 7.7±2.4 min; p<0.01). While ΔQtw,pot was significantly larger in No-PreF compared to PreF (-60% vs -52%, p<0.05), ΔVA was greater in PreF (-14% vs -10%, p<0.05). Taken together, electrically-induced quadriceps fatigue in the contralateral leg limits KE endurance performance and the development of peripheral fatigue in the ipsilateral leg. These findings support the hypothesis that the crossover-effect of central fatigue is mainly mediated by group III/IV muscle afferent feedback and suggest that impairments associated with central motor drive may only play a minor role in this phenomenon.

scholarly journals The body self-awareness among women practicing fitness: a preliminary study

2015 ◽  
Vol 46 (1) ◽  
pp. 104-111 ◽  
Author(s):  
Anna Brytek-Matera ◽  
Anna Kozieł
Keyword(s):  
Body Awareness ◽  
The Body ◽  
Interoceptive Awareness ◽  
Self Awareness ◽  
Body Attitude ◽  
Attitude Test ◽  
Preliminary Study ◽  
Body Self ◽  
Body Attitude Test ◽  
The Relationship

Abstract The purposes of the present study were to explore the relationship between body awareness and negative body attitude, interoceptive body awareness and physical self in women practicing fitness as well as to analyze the determinants of body awareness. The Body Awareness Questionnaire, the Multidimensional Assessment of Interoceptive Awareness, the Physical Self-Description Questionnaire and the Body Attitude Test were applied to 43 women practicing fitness and 32 non-fitness practitioners. Bodily self-awareness was connected with greater fitness practitioners’ interoceptive body awareness and greater physical self. Noticing and global esteem predicted body awareness in women practicing fitness.

CNTF genotype is associated with muscular strength and quality in humans across the adult age span

2001 ◽  
Vol 90 (4) ◽  
pp. 1205-1210 ◽  
Author(s):  
Stephen M. Roth ◽  
Matthew A. Schrager ◽  
Robert E. Ferrell ◽  
Steven E. Riechman ◽  
E. Jeffrey Metter ◽  
...  
Keyword(s):  
Muscle Mass ◽  
Body Mass ◽  
Muscular Strength ◽  
Peak Torque ◽  
Fat Free Mass ◽  
Muscle Quality ◽  
Knee Extensors ◽  
Muscular Power ◽  
Adult Age ◽  
The Relationship

The relationship between ciliary neurotrophic factor (CNTF) genotype and muscle strength was examined in 494 healthy men and women across the entire adult age span (20–90 yr). Concentric (Con) and eccentric (Ecc) peak torque were assessed using a Kin-Com isokinetic dynamometer for the knee extensors (KE) and knee flexors (KF) at slow (0.52 rad/s) and faster (3.14 rad/s) velocities. The results were covaried for age, gender, and body mass or fat-free mass (FFM). Individuals heterozygous for the CNTF null (A allele) mutation (G/A) exhibited significantly higher Con peak torque of the KE and KF at 3.14 rad/s than G/G homozygotes when age, gender, and body mass were covaried ( P < 0.05). When the dominant leg FFM (estimated muscle mass) was used in place of body mass as a covariate, Con peak torque of the KE at 3.14 rad/s was also significantly greater in the G/A individuals ( P < 0.05). In addition, muscle quality of the KE (peak torque at 3.14 rad · s−1 · leg muscle mass−1) was significantly greater in the G/A heterozygotes ( P < 0.05). Similar results were seen in a subanalysis of subjects 60 yr and older, as well as in Caucasian subjects. In contrast, A/A homozygotes demonstrated significantly lower Ecc peak torque at 0.52 rad/s for both KE and KF compared with G/G and G/A groups ( P < 0.05). No significant relationships were observed at 0.52 rad/s between genotype and Con peak torque. These data indicate that individuals exhibiting the G/A genotype possess significantly greater muscular strength and muscle quality at relatively fast contraction speeds than do G/G individuals. Because of high positive correlations between fast-velocity peak torque and muscular power, these findings suggest that further investigations should address the relationship between CNTF genotype and muscular power.

Workplace pressure moderates perception of threat or opportunity and employee creativity after downsizing

2013 ◽  
Vol 41 (6) ◽  
pp. 957-969 ◽  
Author(s):  
Jing Long
Keyword(s):  
Subjective Experience ◽  
Threat Perception ◽  
High Tech ◽  
Employee Creativity ◽  
Perception Of Threat ◽  
The Relationship

I examined subjective experience of creativity after downsizing with 348 employees in high-tech companies. I found that if employees regard downsizing as an opportunity they exhibit greater creativity after downsizing than when they consider downsizing a threat. Workload pressure moderated the relationship between threat perception and self-perceived creativity in such a way that, when workload was light, employees who viewed downsizing as an opportunity experienced greater creativity than when workload was heavy. I also found a 3-way interaction between threat perception, workload pressure, and challenging work such that the 2-way interaction for creativity between threat perception and workload pressure was more significant when work was more challenging.

Interoceptive awareness mediates the relationship between anxiety and the intensity of unpleasant feelings

2007 ◽  
Vol 21 (7) ◽  
pp. 931-943 ◽  
Author(s):  
Olga Pollatos ◽  
Eva Traut-Mattausch ◽  
Heike Schroeder ◽  
Rainer Schandry
Keyword(s):  
Interoceptive Awareness ◽  
The Relationship
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