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Ong LQ, Bellettiere J, Alvarado C, Chavez P, Berardi V. Cannabis use, sedentary behavior, and physical activity in a nationally representative sample of US adults. Harm Reduct J 2021; 18:48. [PMID: 33926458 PMCID: PMC8086340 DOI: 10.1186/s12954-021-00496-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 04/20/2021] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Prior research examining the relationship between cannabis use, sedentary behavior, and physical activity has generated conflicting findings, potentially due to biases in the self-reported measures used to assess physical activity. This study aimed to more precisely explore the relationship between cannabis use and sedentary behavior/physical activity using objective measures. METHODS Data were obtained from the 2005-2006 National Health and Nutrition Examination Survey. A total of 2,092 participants (ages 20-59; 48.8% female) had accelerometer-measured sedentary behavior, light physical activity, and moderate-to-vigorous physical activity. Participants were classified as light, moderate, frequent, or non-current cannabis users depending on how often they used cannabis in the previous 30 days. Multivariable linear regression estimated minutes in sedentary behavior/physical activity by cannabis use status. Logistic regression modeled self-reported moderate-to-vigorous physical activity in relation to current cannabis use. RESULTS Fully adjusted regression models indicated that current cannabis users' accelerometer-measured sedentary behavior did not significantly differ from non-current users. Frequent cannabis users engaged in more physical activity than non-current users. Light cannabis users had greater odds of self-reporting physical activity compared to non-current users. CONCLUSIONS This study is the first to evaluate the relationship between cannabis use and accelerometer-measured sedentary behavior and physical activity. Such objective measures should be used in other cohorts to replicate our findings that cannabis use is associated with greater physical activity and not associated with sedentary behavior in order to fully assess the potential public health impact of increases in cannabis use.
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Affiliation(s)
- Lydia Q Ong
- Department of Psychology, University of British Columbia, 2136 West Mall, Vancouver, BC, V6T 1Z4, USA
| | - John Bellettiere
- Herbert Wertheim School of Public Health and Longevity Science, University of California San Diego, 9500 Gillman Drive, San Diego, CA, 92093, USA.
| | - Citlali Alvarado
- Graduate School of Public Health, San Diego State University, 5500 Campanile Drive, San Diego, CA, 92182, USA
| | - Paul Chavez
- Herbert Wertheim School of Public Health and Longevity Science, University of California San Diego, 9500 Gillman Drive, San Diego, CA, 92093, USA
| | - Vincent Berardi
- Department of Psychology, Chapman University, 1 University Drive, Orange, CA, 92866, USA.
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Hwang UJ, Kwon OY, Yi CH, Jeon HS, Weon JH, Ha SM. Predictors of upper trapezius pain with myofascial trigger points in food service workers: The STROBE study. Medicine (Baltimore) 2017; 96:e7252. [PMID: 28658117 PMCID: PMC5500039 DOI: 10.1097/md.0000000000007252] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Shoulder pain occurs commonly in food service workers (FSWs) who repetitively perform motions of the upper limbs. Myofascial trigger points (MTrPs) on the upper trapezius (UT) are among the most common musculoskeletal shoulder pain syndromes. This study determined the psychological, posture, mobility, and strength factors associated with pain severity in FSWs with UT pain due to MTrPs.In this cross-sectional study, we measured 17 variables in 163 FSWs with UT pain due to MTrPs: a visual analog scale (VAS) pain score, age, sex, Borg rating of perceived exertion (BRPE) scale, beck depression inventory, forward head posture angle, rounded shoulder angle (RSA), shoulder slope angle, scapular downward rotation ratio, cervical lateral-bending side difference angle, cervical rotation side difference angle, glenohumeral internal rotation angle, shoulder horizontal adduction angle, serratus anterior (SA) strength, lower trapezius (LT) strength, bicep strength, and glenohumeral external rotator strength, in 163 FSWs with UT pain due to MTrPs.The model for factors influencing UT pain with MTrPs included SA strength, age, BRPE, LT strength, and RSA as predictor variables that accounted for 68.7% of the variance in VAS (P < .001) in multiple regression models with a stepwise selection procedure. The following were independent variables influencing the VAS in the order of standardized coefficients: SA strength (β = -0.380), age (β = 0.287), BRPE (β = 0.239), LT strength (β = -0.195), and RSA (β = 0.125).SA strength, age, BRPE, LT strength, and RSA variables should be considered when evaluating and intervening in UT pain with MTrPs in FSWs.
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Affiliation(s)
- Ui-Jae Hwang
- Department of Physical Therapy, Graduate School, Yonsei University
| | - Oh-Yun Kwon
- Department of Physical Therapy, College of Health Science, Laboratory of Kinetic Ergocise Based on Movement Analysis, Yonsei University, Wonju
| | - Chung-Hwi Yi
- Department of Physical Therapy, Graduate School, Yonsei University
| | - Hye-Seon Jeon
- Department of Physical Therapy, Graduate School, Yonsei University
| | - Jong-Hyuck Weon
- Department of Physical Therapy, Joongbu University, Chubu-myeon, Geumsan-gun, Chungcheongnam-do
| | - Sung-Min Ha
- Department of Physical Therapy, College of Health Science, Sangji University, Wonju, South Korea
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Bron C, Dommerholt J, Stegenga B, Wensing M, Oostendorp RAB. High prevalence of shoulder girdle muscles with myofascial trigger points in patients with shoulder pain. BMC Musculoskelet Disord 2011; 12:139. [PMID: 21711512 PMCID: PMC3146907 DOI: 10.1186/1471-2474-12-139] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2010] [Accepted: 06/28/2011] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Shoulder pain is reported to be highly prevalent and tends to be recurrent or persistent despite medical treatment. The pathophysiological mechanisms of shoulder pain are poorly understood. Furthermore, there is little evidence supporting the effectiveness of current treatment protocols. Although myofascial trigger points (MTrPs) are rarely mentioned in relation to shoulder pain, they may present an alternative underlying mechanism, which would provide new treatment targets through MTrP inactivation. While previous research has demonstrated that trained physiotherapists can reliably identify MTrPs in patients with shoulder pain, the percentage of patients who actually have MTrPs remains unclear. The aim of this observational study was to assess the prevalence of muscles with MTrPs and the association between MTrPs and the severity of pain and functioning in patients with chronic non-traumatic unilateral shoulder pain. METHODS An observational study was conducted. Subjects were recruited from patients participating in a controlled trial studying the effectiveness of physical therapy on patients with unilateral non-traumatic shoulder pain. Sociodemographic and patient-reported symptom scores, including the Disabilities of the Arm, Shoulder, and Hand (DASH) Questionnaire, and Visual Analogue Scales for Pain were compared with other studies. To test for differences in age, gender distribution, and education level between the current study population and the populations from Dutch shoulder studies, the one sample T-test was used. One observer examined all subjects (n = 72) for the presence of MTrPs. Frequency distributions, means, medians, standard deviations, and 95% confidence intervals were calculated for descriptive purposes. The Spearman's rank-order correlation (ρ) was used to test for association between variables. RESULTS MTrPs were identified in all subjects. The median number of muscles with MTrPs per subject was 6 (active MTrPs) and 4 (latent MTrPs). Active MTrPs were most prevalent in the infraspinatus (77%) and the upper trapezius muscles (58%), whereas latent MTrPs were most prevalent in the teres major (49%) and anterior deltoid muscles (38%). The number of muscles with active MTrPs was only moderately correlated with the DASH score. CONCLUSION The prevalence of muscles containing active and latent MTrPs in a sample of patients with chronic non-traumatic shoulder pain was high.
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Affiliation(s)
- Carel Bron
- Scientific Institute for Quality of Healthcare, Radboud University Nijmegen Medical Centre, Geert Grooteplein 21, 6525 EX Nijmegen, The Netherlands.
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Taguchi T, Mizumura K. Augmented mechanical response of muscular thin-fiber receptors in aged rats recorded in vitro. Eur J Pain 2010; 15:351-8. [PMID: 20851649 DOI: 10.1016/j.ejpain.2010.08.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2010] [Revised: 07/22/2010] [Accepted: 08/13/2010] [Indexed: 11/25/2022]
Abstract
Musculoskeletal pain deteriorates quality of life by disrupting daily activities and is a considerable economic burden to many countries because of the large number of patients. Little is known about the peripheral neural mechanisms of muscular nociception in the aged, although structural and functional changes in the muscle are apparent as a function of age. The aim of the present study was to investigate the activities of aged muscle nociceptors systematically to mechanical, chemical and thermal stimuli, and to compare with the data from young animals. Activities of single C-fibers were recorded from in vitro preparations of extensor digitorum longus muscle-nerve excised from hind legs of aged rats (125-133 weeks). Mechanical threshold measured by a ramp mechanical stimulus in the aged muscle (median; 45.2 mN (IQR; 38.1-59.1 mN), n=29) was significantly lower than that in the younger muscle (median; 65.4 mN (IQR; 46.6-122.0 mN), n=33, p<0.01, Mann-Whitney U-test) reported in our previous study (Taguchi et al., 2005). In addition, the magnitude of the mechanical response during the first 5s of the 10s stimulus was significantly greater in the aged muscle (11.0 spikes (IQR; 6.5-20.5 spikes)) than in the young (7.0 spikes (IQR; 4.0-11.5 spikes), p<0.05, Mann-Whitney U-test). In contrast, the numbers of discharges induced by chemical (pH 5.5, ATP and bradykinin) and thermal (cold and heat) stimuli were not different with the different ages. These results showed an augmented mechanical response in muscle C-afferents in the aged rats.
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Affiliation(s)
- Toru Taguchi
- Department of Neuroscience II, Division of Stress Recognition and Response, Research Institute of Environmental Medicine, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
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Taguchi T, Matsuda T, Mizumura K. Change with age in muscular mechanical hyperalgesia after lengthening contraction in rats. Neurosci Res 2007; 57:331-8. [PMID: 17156878 DOI: 10.1016/j.neures.2006.11.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2006] [Revised: 10/24/2006] [Accepted: 11/02/2006] [Indexed: 11/30/2022]
Abstract
To determine whether there is any change by aging in mechanical hyperalgesia (delayed onset muscle soreness) after lengthening contraction (LC, also termed as eccentric contraction), we applied LC to the dorsi-flexors of the hind legs in young (7-week-old) and aged (130-week-old) rats and examined the change in mechanical withdrawal threshold of the exercised muscle with a Randall-Selitto apparatus and by c-Fos expression in the dorsal horn. The baseline mechanical withdrawal threshold did not differ among two age groups. One day after LC the withdrawal threshold started to decrease in both age groups, however, the duration of decreased withdrawal threshold was different: young rats had their withdrawal threshold lowered only for 3 days after LC while that of aged rats remained lowered two more days, showing delayed recovery in aged rats. Induction of c-Fos expression in the spinal dorsal horn by compression of the muscle was examined in aged animals 3 days after LC. Significantly larger numbers of c-Fos positive neurons was observed in the superficial dorsal horn than the control animals (no treatment). This increase was observed not only in L4 but also in L5, a wider distribution than in young animals (L4 only) in our previous report [Taguchi, T., Matsuda, T., Tamura, R., Sato, J., Mizumura, K., 2005a. Muscular mechanical hyperalgesia revealed by behavioural pain test and c-Fos expression in the spinal dorsal horn after eccentric contraction in rats.
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Affiliation(s)
- Toru Taguchi
- Department of Neuroscience, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan
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Abstract
The aim of this review is to present research that has a bearing on the pathogenesis of hypersensitivity in muscle pain syndromes. Allodynia and hyperalgesia in these syndromes can be segmental or generalized and temporary or permanent. Hypersensitivity in muscle pain conditions in the clinic is best diagnosed by determining the pressure pain threshold. In a disorder such as fibromyalgia, decreased pain thresholds also are found at sites where there is no tenderness. Pathogenetic mechanisms for allodynia and hyperalgesia can be identified at several levels of the nociceptive system, from the nociceptors in the muscle to the cortex. Central sensitization of nociceptive neurons in the dorsal horn and a disturbed balance between inhibitory and facilitatory impulses in the descending tracts from the brain stem to the dorsal horn are the main mechanisms for pain hypersensitivity. Changes in function, biochemical make-up, and synaptic connections in the nociceptive neurons in the dorsal horn are considered to be caused by neuronal plasticity.
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Affiliation(s)
- Karl G Henriksson
- Department of Rehabilitation Medicine, Faculty of Health Sciences, Linkoping University, Pain Clinic, University Hospital, Linkoping, SE-581 85, Sweden.
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Vecchiet J, Cipollone F, Falasca K, Mezzetti A, Pizzigallo E, Bucciarelli T, De Laurentis S, Affaitati G, De Cesare D, Giamberardino MA. Relationship between musculoskeletal symptoms and blood markers of oxidative stress in patients with chronic fatigue syndrome. Neurosci Lett 2003; 335:151-4. [PMID: 12531455 DOI: 10.1016/s0304-3940(02)01058-3] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In 21 patients with chronic fatigue syndrome (CFS) versus 20 normal subjects, we investigated the oxidant/antioxidant balance and its correlation with muscle symptoms. Patients versus controls showed significantly: lower Lag Phase and Vitamin E (Vit E) concentrations in plasma and low-density lipoproteins (LDL), higher LDL thiobarbituric acid reactive substances (TBARS), higher fatigue and lower muscle pain thresholds to electrical stimulation. A significant direct linear correlation was found between fatigue and TBARS, thresholds and Lag Phase, thresholds and Vit E in plasma and LDL. A significant inverse linear correlation was found between fatigue and Lag Phase, fatigue and Vit E, thresholds and TBARS. Increased oxidative stress and decreased antioxidant defenses are related to the extent of symptomatology in CFS, suggesting that antioxidant supplementation might relieve muscle symptoms in the syndrome.
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Affiliation(s)
- Jacopo Vecchiet
- Department of Medicine and Science of Aging, G. D'Annunzio University of Chieti, Italy
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