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Implementation of specific strength training among industrial laboratory technicians: long-term effects on back, neck and upper extremity pain.

ABSTRACT: Previous studies have shown positive effects of physical exercise at the workplace on musculoskeletal disorders. However, long-term adherence remains a challenge. The present study evaluates long-term adherence and effects of a workplace strength training intervention on back, neck and upper extremity pain among laboratory technicians.Cluster-randomized controlled trial involving 537 industrial laboratory technicians. Subjects were randomized at the cluster level to one of two groups: training group 1 (TG1, n?=?282) performing supervised strength training from February to June 2009 (round one) or training group 2 (TG2, n?=?255) performing supervised strength training from August to December 2009 (round two). The outcome measures were changes in self-reported pain intensity (0-9) in the back, neck and upper extremity as well as Disability of the Arm, Shoulder and Hand (DASH, 0-100).Regular adherence, defined as at least one training session per week, was achieved by around 85% in both groups in the supervised training periods. In the intention-to-treat analyses there were significant group by time effects for pain in the neck, right shoulder, right hand and lower back and DASH-resulting in significant reductions in pain (mean 0.3 to 0.5) and DASH (mean 3.9) in the scheduled training group compared to the reference group. For TG1 there were no significant changes in pain in round two, i.e. they maintained the pain reduction achieved in round one. Subgroup analyses among those with severe pain (>?=?3 on a scale of 0-9) showed a significant group by time effect for pain in the neck, right shoulder, upper back and lower back. For these subgroups the pain reduction in response to training ranged from 1.1 to 1.8.Specific strength training at the workplace can lead to significant long-term reductions in spinal and upper extremity pain and DASH. The pain reductions achieved during the intensive training phase with supervision appears to be maintained a half year later.

SUBMITTER: Pedersen MT

PROVIDER: S-EPMC3851840 | biostudies-literature | 2013 Oct

REPOSITORIES: biostudies-literature

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Implementation of specific strength training among industrial laboratory technicians: long-term effects on back, neck and upper extremity pain.

Pedersen Mogens Theisen MT Andersen Christoffer H CH Zebis Mette K MK Sjøgaard Gisela G Andersen Lars L LL

BMC musculoskeletal disorders 20131009

<h4>Background</h4>Previous studies have shown positive effects of physical exercise at the workplace on musculoskeletal disorders. However, long-term adherence remains a challenge. The present study evaluates long-term adherence and effects of a workplace strength training intervention on back, neck and upper extremity pain among laboratory technicians.<h4>Methods</h4>Cluster-randomized controlled trial involving 537 industrial laboratory technicians. Subjects were randomized at the cluster lev ...[more]

PMID: 24106771

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Project description:BACKGROUND:Sonographers have reported a high occurrence of musculoskeletal pain for more than 25?years. Assessments of occupational risk factors have previously been based on cross-sectional surveys. The aim of this longitudinal study was to determine which factors at baseline that were associated with neck/shoulder and elbow/hand pain at follow-up. METHODS:A questionnaire was answered by 248 female sonographers at baseline and follow-up (85% of the original cohort). 208 were included in the analyses. Physical, visual, and psychosocial work-related conditions were assessed at baseline. Pain in two body regions (neck/shoulders and elbows/hands) was assessed at both baseline and follow up. RESULTS:Pain at baseline showed the strongest association with pain at follow-up in both body regions [prevalence ratio (PR) 2.04; 95% confidence interval (CI) 1.50-2.76], for neck/shoulders and (PR 3.45; CI 2.29-5.22) for elbows/hands. Neck/shoulder pain at follow-up was associated with inability of ergonomic adjustments at the ultrasound device (PR 1.25; CI 1.05-1.49), a high mechanical exposure index (PR 1.66; CI 1.09-2.52), and adverse visual conditions (PR 1.24; CI 1.00-1.54) at baseline. Moreover, among participants with no neck/shoulder pain at baseline, high job demands (PR 1.78; CI 1.01-3.12), and a high mechanical exposure index (PR 2.0; CI 0.98-4.14) predicted pain at follow-up. Pain in the elbows/hands at follow-up was associated with high sensory demands at baseline (PR 1.63; CI 1.08-2.45), and among participants without pain at baseline high sensory demands predicted elbow/hand pain at follow-up (PR 3.34; CI 1.53-7.31). CONCLUSION:Pain at baseline was the strongest predictor for pain at follow-up in both body regions. We also found several occupational factors at baseline that were associated with pain at follow-up: inability to adjust equipment, adverse visual conditions, a high MEI, high job demands and high sensory demands. These results point at a possibility to influence pain with better ergonomics.

Project description:PurposeOur purpose was to evaluate the implementation of a postoperative hand and upper extremity telemedicine program. We aimed to compare travel burden, visit time, and patient satisfaction between an initial postoperative telemedicine visit and a second conventional in-clinic visit.MethodsTelemedicine guidelines established by our hospital system were used as inclusion criteria for this prospective study, which included patients indicated for surgery in the outpatient clinic during a 3-month period. Patients were excluded if they had wounds closed with nonabsorbable suture, remained admitted to the hospital, or required a custom orthosis at their first postoperative visit. Baseline demographics and patient-reported outcome measures were collected prior to surgery. Information pertaining to technology usage was collected for the telemedicine visit and travel information was obtained for the in-clinic visit. Patient satisfaction was recorded for both visits.ResultsFifty-seven of 87 patients (66%) who met the inclusion criteria elected to participate in the study. A cell phone was utilized by 89% of patients and 88% of visits were performed from the patient's home. There were 4 technological complications during the study period (7%). Mean round-trip travel distance for the in-clinic visit was 60 miles with an average drive time of 85 minutes. Visit times were significantly shorter with telemedicine (7 minutes vs 38 minutes). Telemedicine was preferred by 90% of patients for subsequent encounters. All 4 clinical complications were recognized during the telemedicine visit.ConclusionsA telemedicine program for postoperative care after hand and upper extremity surgery decreases travel burdens associated with conventional in-clinic appointments. Telemedicine significantly decreases visit times without decreasing patient satisfaction for patients who elect to participate in remote video visits. The ability to recognize early postsurgical complications was not compromised by utilizing this technology, even during our early experience.Clinical relevanceTelemedicine after hand and upper extremity surgery results in high levels of patient satisfaction and decreases visit times and the travel burdens associated with conventional in-clinic appointments.

Project description:BackgroundUpper extremity musculoskeletal disorders negatively affect ability to perform activities of daily living, self-care and work. Therefore, outcome measurements that address muscle strength, fatigue resistance, functionality and work physical capacity must be defined to assess and plan specific actions to minimize them.ObjectiveTo investigate the association of upper extremity muscle strength with upper extremity fatigue resistance, work ability and upper extremity dysfunction in a sample of workers from a tertiary hospital.MethodsShoulder and elbow isokinetic strength were assessed by Biodex System 4™, isometric hand grip by JAMAR™, upper extremity fatigue resistance by Functional Impairment Test Hand and Neck/Shoulder/Arm (FIT-HaNSA), ability to work by the Work Ability Index and upper extremity dysfunction by the Quick-Disabilities of the Arm, Shoulder and Hand QuickDASH-Br questionnaire. The Nordic questionnaire and Numeric Pain Rating Scale (NPRS) were used for pain description. The associations were analysed by Spearman's correlation coefficient (rho) (p < 0.05).ResultsTwenty-seven participants: 59.2% women; mean age 46 years old; 70.3% obese/overweight; 62.9% active with predominantly dynamic muscle contraction work. Besides predominance of good to moderate work ability (81.4%) and comorbidities (37%), all participants had symptoms of the upper extremities for at least 12 months, with a predominance of low-intensity in the shoulder (55.5%). In addition, 88.8% reported pain in other segments. Muscle strength of abduction (rho = 0.49), adduction (rho = 0.40), internal rotation (rho = 0.44) and hand grip (rho = 0.68) presented moderate correlation with FIT-HaNSA. Hand grip (rho = - 0.52) showed moderate correlation with upper extremity dysfunction.ConclusionsThe results of this preliminary study suggested the association of shoulder strength with fatigue resistance. Also, hand grip strength was associated with upper extremity dysfunction and fatigue resistance. No association was found with the Work Ability Index in this sample. So, it is suggested that hand grip and shoulder strength could be outcome measurements used for future interventions focused on upper extremity preventive exercises to improve strength and fatigue resistance of workers at risk for the development of musculoskeletal disorders. Other individual, psychosocial and organizational risk factors must also be considered as influences on upper extremity function.

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Implementation of specific strength training among industrial laboratory technicians: long-term effects on back, neck and upper extremity pain.

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Implementation of specific strength training among industrial laboratory technicians: long-term effects on back, neck and upper extremity pain.

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