scholarly journals The peer effect on pain tolerance

2018 ◽  
Vol 18 (3) ◽  
pp. 467-477 ◽  
Author(s):  
Solveig Engebretsen ◽  
Arnoldo Frigessi ◽  
Kenth Engø-Monsen ◽  
Anne-Sofie Furberg ◽  
Audun Stubhaug ◽  
...  
Keyword(s):  
Social Network ◽  
Social Environment ◽  
Cold Pressor Test ◽  
Cold Pressor ◽  
Pain Tolerance ◽  
Potential Candidate ◽  
Peer Effect ◽  
Influence Effect ◽  
The Social ◽  
Average Pain

Abstract Background and aims Twin studies have found that approximately half of the variance in pain tolerance can be explained by genetic factors, while shared family environment has a negligible effect. Hence, a large proportion of the variance in pain tolerance is explained by the (non-shared) unique environment. The social environment beyond the family is a potential candidate for explaining some of the variance in pain tolerance. Numerous individual traits have previously shown to be associated with friendship ties. In this study, we investigate whether pain tolerance is associated with friendship ties. Methods We study the friendship effect on pain tolerance by considering data from the Tromsø Study: Fit Futures I, which contains pain tolerance measurements and social network information for adolescents attending first year of upper secondary school in the Tromsø area in Northern Norway. Pain tolerance was measured with the cold-pressor test (primary outcome), contact heat and pressure algometry. We analyse the data by using statistical methods from social network analysis. Specifically, we compute pairwise correlations in pain tolerance among friends. We also fit network autocorrelation models to the data, where the pain tolerance of an individual is explained by (among other factors) the average pain tolerance of the individual’s friends. Results We find a significant and positive relationship between the pain tolerance of an individual and the pain tolerance of their friends. The estimated effect is that for every 1 s increase in friends’ average cold-pressor tolerance time, the expected cold-pressor pain tolerance of the individual increases by 0.21 s (p-value: 0.0049, sample size n=997). This estimated effect is controlled for sex. The friendship effect remains significant when controlling for potential confounders such as lifestyle factors and test sequence among the students. Further investigating the role of sex on this friendship effect, we only find a significant peer effect of male friends on males, while there is no significant effect of friends’ average pain tolerance on females in stratified analyses. Similar, but somewhat lower estimates were obtained for the other pain modalities. Conclusions We find a positive and significant peer effect in pain tolerance. Hence, there is a significant tendency for students to be friends with others with similar pain tolerance. Sex-stratified analyses show that the only significant effect is the effect of male friends on males. Implications Two different processes can explain the friendship effect in pain tolerance, selection and social transmission. Individuals might select friends directly due to similarity in pain tolerance, or indirectly through similarity in other confounding variables that affect pain tolerance. Alternatively, there is an influence effect among friends either directly in pain tolerance, or indirectly through other variables that affect pain tolerance. If there is indeed a social influence effect in pain tolerance, then the social environment can account for some of the unique environmental variance in pain tolerance. If so, it is possible to therapeutically affect pain tolerance through alteration of the social environment.

Differential pain modulation in patients with peripheral neuropathic pain and fibromyalgia

2012 ◽  
Vol 3 (3) ◽  
pp. 116-123 ◽  
Author(s):  
Lise Gormsen ◽  
Flemming W. Bach ◽  
Raben Rosenberg ◽  
Troels S. Jensen
Keyword(s):  
Neuropathic Pain ◽  
Cold Water ◽  
Cold Pressor Test ◽  
Cold Pressor ◽  
Pain Modulation ◽  
Pain Tolerance ◽  
Spontaneous Pain ◽  
Peripheral Neuropathic Pain ◽  
Pressor Test ◽  
Pain Patients

AbstractBackgroundThe definition of neuropathic pain has recently been changed by the International Association for the Study of Pain. This means that conditions such as fibromyalgia cannot, as sometimes discussed, be included in the neuropathic pain conditions. However, fibromyalgia and peripheral neuropathic pain share common clinical features such as spontaneous pain and hypersensitivity to external stimuli. Therefore, it is of interest to directly compare the conditions.Material and methodsIn this study we directly compared the pain modulation in neuropathic pain versus fibromyalgia by recording responses to a cold pressor test in 30 patients with peripheral neuropathic pain, 28 patients with fibromyalgia, and 26 pain-free age-and gender-matched healthy controls. Patients were asked to rate their spontaneous pain on a visual analog scale (VAS (0–100 mm) immediately before and immediately after the cold pressor test. Furthermore the duration (s) of extremity immersion in cold water was used as a measure of the pain tolerance threshold, and the perceived pain intensity at pain tolerance on the VAS was recorded on the extremity in the water after the cold pressor test. In addition, thermal (thermo tester) and mechanical stimuli (pressure algometer) were used to determine sensory detection, pain detection, and pain tolerance thresholds in different body parts. All sensory tests were done by the same examiner, in the same room, and with each subject in a supine position. The sequence of examinations was the following: (1) reaction time, (2) pressure thresholds, (3) thermal thresholds, and (4) cold pressor test. Reaction time was measured to ensure that psychomotoric inhibitions did not influence pain thresholds.ResultsPain modulation induced by a cold pressor test reduced spontaneous pain by 40% on average in neuropathic pain patients, but increased spontaneous pain by 2.6% in fibromyalgia patients. This difference between fibromyalgia and neuropathic pain patients was significant (P < 0.002). Fibromyalgia patients withdrew their extremity from the cold water significantly earlier than neuropathic pain patients and healthy controls; however, they had a higher perceived pain intensity on the VAS than neuropathic pain patients and control subjects. Furthermore, neuropathic pain patients had a localized hypersensitivity to mechanical and thermal stimuli in the affected area of the body. In contrast, fibromyalgia patients displayed a general hypersensitivity to mechanical and thermal stimuli when the stimuli were rated by the VAS, and hypersensitivity to some of the sensory stimuli.ConclusionsThese findings are the first to suggest that a conditioning stimulus evoked by a cold pressor test reduced spontaneous ongoing pain in patients with peripheral neuropathic pain, but not in fibromyalgia patients when directly compared. The current study supports the notion that fibromyalgia and neuropathic pain are distinct pain conditions with separate sensory patterns and dysfunctions in pain-modulating networks. Fibromyalgia should therefore not, as sometimes discussed, be included in NP conditions.ImplicationsOn the basis of the findings, it is of interest to speculate on the underlying mechanisms. The results are consistent with the idea that peripheral neuropathic pain is primarily driven from damaged nerve endings in the periphery, while chronic fibromyalgia pain may be a central disorder with increased activity in pain-facilitating systems.

Personality and Pain Tolerance Measures

1969 ◽  
Vol 28 (3) ◽  
pp. 787-790 ◽  
Author(s):  
P. O. Davidson ◽  
C. Evalynne ◽  
A. McDougall
Keyword(s):  
Cold Pressor Test ◽  
Cold Pressor ◽  
Pain Tolerance ◽  
Pressor Test ◽  
Pressure Test ◽  
Cold Pressure ◽  
Cold Pressure Test

In an attempt to resolve a controversy in the literature about the relation of extraversion to pain tolerance, a Hardy-Wolff-Goodell heat test and a cold-pressure test of pain tolerance were given to 60 female Ss who comprised two groups. Analysis of the data indicated that neither extraversion not neuroticism was significantly related to pain tolerance as measured by either heat or cold methods ( rs ranged from –.09 to .09). Introverted Ss were much more variable in their pain tolerance on the cold pressor test than extroverts.

scholarly journals A Statistical Evaluation and Modeling on the Social Transitivity Behavior

2017 ◽  
Vol 5 (2) ◽  
Author(s):  
Chiao Yi Yang ◽  
Frederick Kin Hing Phoa ◽  
Yen-Sheng Chiang
Keyword(s):  
Mathematical Model ◽  
Social Network ◽  
Statistical Analysis ◽  
Social Environment ◽  
Statistical Evaluation ◽  
Experimental Results ◽  
Human Society ◽  
Key Factors ◽  
The Social ◽  
Sharing Behavior

Transitivity is one of the most important mechanisms to form a social network in a human society, but it remains unclear how such behavior is quantified and affected by some key factors, including the social environment and the participants' characters. This study investigates the sharing behavior based on the notion of transitivity and an experiment is conducted on a variety of populations from kindergarteners to teenagers. The key effects that have high impacts to the sharing behavior are identified from the statistical analysis of the experimental results. A mathematical model is built for the experimental results and its performance compared with other models is also illustrated.

scholarly journals Classification of Game Demand and the Presence of Experimental Pain Using Functional Near-Infrared Spectroscopy

2021 ◽  
Vol 2 ◽  
Author(s):  
Stephen H. Fairclough ◽  
Chelsea Dobbins ◽  
Kellyann Stamp
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Cold Pressor Test ◽  
Experimental Pain ◽  
Cold Pressor ◽  
Pain Tolerance ◽  
Support Vector ◽  
Test Protocol ◽  
Functional Near Infrared Spectroscopy

Pain tolerance can be increased by the introduction of an active distraction, such as a computer game. This effect has been found to be moderated by game demand, i.e., increased game demand = higher pain tolerance. A study was performed to classify the level of game demand and the presence of pain using implicit measures from functional Near-InfraRed Spectroscopy (fNIRS) and heart rate features from an electrocardiogram (ECG). Twenty participants played a racing game that was configured to induce low (Easy) or high (Hard) levels of demand. Both Easy and Hard levels of game demand were played with or without the presence of experimental pain using the cold pressor test protocol. Eight channels of fNIRS data were recorded from a montage of frontal and central-parietal sites located on the midline. Features were generated from these data, a subset of which were selected for classification using the RELIEFF method. Classifiers for game demand (Easy vs. Hard) and pain (pain vs. no-pain) were developed using five methods: Support Vector Machine (SVM), k-Nearest Neighbour (kNN), Naive Bayes (NB) and Random Forest (RF). These models were validated using a ten fold cross-validation procedure. The SVM approach using features derived from fNIRS was the only method that classified game demand at higher than chance levels (accuracy = 0.66, F1 = 0.68). It was not possible to classify pain vs. no-pain at higher than chance level. The results demonstrate the viability of utilising fNIRS data to classify levels of game demand and the difficulty of classifying pain when another task is present.

Personality traits and sensitivity to pain in male chronic opioid addicts

2007 ◽  
Vol 3 (4) ◽  
pp. 225 ◽  
Author(s):  
Elon Eisenberg, MD ◽  
Doron Cohen, MA ◽  
Eli Lawental, PhD ◽  
Dorit Pud, PhD
Keyword(s):  
Personality Traits ◽  
Pain Perception ◽  
Cold Pressor Test ◽  
Cold Pressor ◽  
Significant Negative Correlation ◽  
Pain Tolerance ◽  
Control Group ◽  
Healthy Population ◽  
Novelty Seeking ◽  
Pain Mechanisms

Objective: Previous evidences concerning pain mechanisms, long-term opioids use, and personality traits evolve the possibility that pain perception and opioid abuse are two related phenomena and there is a need to take into account the specific personality traits as well, in examining the relationships among them. Opioid addicts (OAs) have been shown to exhibit different personality traits and pain perception as compared with healthy subjects. The aim of the present study was to examine the relations between personality traits and pain perception among in-treatment OAs in comparison with controls.Design: Participants (54 OAs, 59 controls), all males, were exposed to the cold pressor test and were evaluated for latency of pain onset (seconds); pain intensity (0-100 visual analogue scale [VAS)]); and pain tolerance (time for hand withdrawal). Personality traits were evaluated using Cloninger’s Tridimensional Personality Questionnaire, TPQ; harm avoidance, HA; reward dependence, RD; novelty seeking, NS.Results: In comparison with controls, OAs exhibited longer latencies, lower VAS scores, and shorter tolerance, and significantly higher NS, higher HA, and lower RD. Control group, but not OAs, showed a significant positive correlation between HA and VAS (r = 0.31, p = 0.02) and significant negative correlation between HA and tolerance (r = −0.29, p = 0.03).Conclusions: It is concluded that in contrast to healthy population, personality traits, as measured by the TPQ, do not predict pain perception in OAs.

scholarly journals Aging Independently of the Hormonal Status Changes Pain Responses in Young Postmenopausal Women

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Yannick Tousignant-Laflamme ◽  
Serge Marchand
Keyword(s):  
Postmenopausal Women ◽  
Pain Threshold ◽  
Pain Perception ◽  
Cold Pressor Test ◽  
Cold Pressor ◽  
Pain Tolerance ◽  
Hormonal Status ◽  
Pain Pathways ◽  
Pain Ratings ◽  
The Mean

Both aging and hormonal status have an effect on pain perception. The goal of this study was to isolate as much as possible the effect of aging in postmenopausal women. Thirty-two women with regular menstrual cycles (RMW) and 18 postmenopausal women (PMW) underwent a 2-minute cold pressor test (CPT) to activate DNIC with a series of tonic heat pain stimulations with a contact thermode to assess ascending pain pathways. We found that this procedure induced much less pain during the first 15 seconds of stimulation the PMW group (P=0.03), while the mean thermode pain ratings, pain tolerance, pain threshold, and DNIC analgesia were similar for both groups (P>0.05). The absence of the peak pain in the PMW was probably due to reduced function of the myelinated Aδ fibers that naturally occurs with age.

scholarly journals The Relationship between Personality Characteristics and Acute Pain Response in Postadolescent Males

1992 ◽  
Vol 1 (2) ◽  
pp. 111-120 ◽  
Author(s):  
Barton P. Buxton ◽  
David H. Perrin
Keyword(s):  
Acute Pain ◽  
Pain Threshold ◽  
Cold Pressor Test ◽  
Cold Pressor ◽  
Personality Characteristic ◽  
Pain Tolerance ◽  
Personality Characteristics ◽  
Pain Response ◽  
Myers Briggs Type Indicator ◽  
The Relationship

The purpose of this investigation was to determine the relationship between personality characteristics, as measured by the Myers-Briggs Type Indicator (MBTI) (form G), and an acute pain response in 107 postadolescent men. Subjects included 107 military school cadets. Each subject performed a cold pressor test (CPT) and was evaluated for pain threshold and pain tolerance times. Each was then evaluated for preference on eight personality characteristics: extraversion, introversion, sensing, intuition, thinking, feeling, judging, and perception. The personality characteristics were measured by the MBT1 (form G). Pearson product-moment correlations between the pain threshold and tolerance times and the eight personality characteristic scores were nonsignificant. The results indicated there was no relationship between the eight personality characteristics, as measured by the MBTI (form G), and pain threshold or pain tolerance, as measured by the CPT, The findings also indicated a low correlation between pain threshold and pain tolerance (r=.25).

scholarly journals United They’re Cited: Impact of a Social Work Coauthor Network

2016 ◽  
Vol 16 (2) ◽  
pp. 422-438
Author(s):  
Ralph Edward Woehle
Keyword(s):  
Social Networks ◽  
Social Network ◽  
Social Work ◽  
Network Analysis ◽  
Social Environment ◽  
Complexity Theory ◽  
Network Centrality ◽  
Abductive Logic ◽  
The Social ◽  
Important Means

Social work has emphasized the importance of the social environment, and social networks are an important means of understanding the social environment. The scholarship of a journal coauthor network provided important findings and an example. Prior theory and research suggested there are more citations from the center of coauthor networks than at the periphery. Using abductive logic, complexity theory, social network analysis, and tabular analysis of a social work coauthor network, the center of the network was found to produce more citations than the periphery. Both the prestige of coauthors’ setting and position were modestly associated with network centrality and citations. The functionality of citations, which includes the contribution to good scholarship, is questioned. Areas of further research and issues of evaluating coauthored scholarship are discussed. Placing greater value on coauthoring and publishing with less prominent coauthors for tenure and similar decisions is recommended.

scholarly journals Pain Perception in Contact Sport Athletes: A Scoping Review

2021 ◽  
Author(s):  
Amanda O'Farrell ◽  
William Sauvé ◽  
Maxime Bergevin ◽  
Giuseppe Cimadoro ◽  
Arvisais D. ◽  
...  
Keyword(s):  
Scoping Review ◽  
Pain Perception ◽  
Cold Pressor Test ◽  
Experimental Studies ◽  
Cold Pressor ◽  
Pain Tolerance ◽  
Physical Pain ◽  
Contact Sport ◽  
Contact Sports ◽  
Pain Testing

Contact sports athletes are regularly facing acute physical pain in part of their practice. However, the literature investigating pain perception in these athletes remains scarce. This scoping review aimed to explore the literature surrounding pain perception in contact sport athletes and to compile and understand how it is studied. The search strategy consisted of using index terms and keywords in Medline, EMBASE, Sport-Discus, Web of Science, PsycINFO, CINAHL and ProQuest Dissertations &amp; Theses Global search engines. Results revealed that a mix of team contact sports and combat sports are studied and included under the umbrella of contact sports. These athletes are being compared to non-athletes as well as athletes from non-contact sports. The cold pressor test and the pain pressure test are the two predominant methods used to investigate physical pain. This review highlights the need to clearly define sports based on contact levels expected in play to better define the types of pain athletes are facing in their practice. Athlete’s level of play as well as years of experience should also be more rigorously reported. While contact sport athletes seem to have a higher level of pain tolerance than both active controls and non-contact athletes, the methods of pain testing are not always justified and appropriate in relation to the pain induced during contact sports. Future experimental studies should use pain testing methods relevant to the pain experienced during contact sports and better justify the rationale for the choice of these methods.

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