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Fulltext Biomechanics Analysis of the Firefighters' Thorax Movement on Personal Protective Equipment during Lifting Task Using Inertial Measurement Unit Motion Capture

Yunus MNH, Jaafar MH, Mohamed ASA, Azraai NZ, Amil N, Zein RM

Int J Environ Res Public Health, 2022 Oct 31;19(21).
PMID: 36361112 DOI: 10.3390/ijerph192114232

Back injury is a common musculoskeletal injury reported among firefighters (FFs) due to their nature of work and personal protective equipment (PPE). The nature of the work associated with heavy lifting tasks increases FFs' risk of back injury. This study aimed to assess the biomechanics movement of FFs on personal protective equipment during a lifting task. A set of questionnaires was used to identify the prevalence of musculoskeletal pain experienced by FFs. Inertial measurement unit (IMU) motion capture was used in this study to record the body angle deviation and angular acceleration of FFs' thorax extension. The descriptive analysis was used to analyze the relationship between the FFs' age and body mass index with the FFs' thorax movement during the lifting task with PPE and without PPE. Sixty-three percent of FFs reported lower back pain during work, based on the musculoskeletal pain questionnaire. The biomechanics analysis of thorax angle deviation and angular acceleration has shown that using FFs PPE significantly causes restricted movement and limited mobility for the FFs. As regards human factors, the FFs' age influences the angle deviation while wearing PPE and FFs' BMI influences the angular acceleration without wearing PPE during the lifting activity.

Matched MeSH terms: Lifting
Fulltext Survey of body part symptoms among workers in a car tyre service centre

Abd Rahman MN, Aziz FA, Yusuff RM

J Hum Ergol (Tokyo), 2010 Jun;39(1):53-6.
PMID: 21922791 DOI: 10.11183/jhe.39.53

The purpose of this study was to investigate the prevalence of body part symptoms and sources of injury/discomfort among workers in a car tyre service centre. Questionnaire survey and interview session were used to identify the level of body discomfort areas and sources of injury or discomfort. From questionnaire survey findings, 12 of respondents have body discomfort in the neck (66.7%%), shoulder (83.3%), elbow/forearm (75%), hand/wrist (91.7%), knee (58.3%), lower leg (75%), ankle/foot (33%) and lower back (30%). The main sources of injury/discomfort in the workplace were poor body posture (75%), bending the back (75%), highly repetitive motions (75%), lifting heavy objects (83.3%), the long-term standing (66.7%), long-term squatting (58.3%), bending the neck (66.7%) and high hand force (58.3%). About 50% reported that poor workplace design also contributed to injury while 41.7% mentioned the use of hand tools. To address modifying the ergonomic hazards, engineering controls and administrative controls can be used. The study will be useful to ergonomists, researchers, consultants, workshop managers, maintenance workers and others concerned with identifying body part symptoms and sources of injury/discomfort at the workplace.

Matched MeSH terms: Lifting/adverse effects
Fulltext Maximum acceptable frequency of lift for combined manual material handling task in Malaysia

Widia M, Md Dawal SZ, Yusoff N

PLoS One, 2019;14(5):e0216918.
PMID: 31141545 DOI: 10.1371/journal.pone.0216918

BACKGROUND: Extensive studies have been carried out over the years to determine the maximum acceptable weight that a worker is capable of lifting in a given situation among Occidental populations across Europe and US. Nonetheless, studies that place emphasis on using lifting frequency as the quantifying task parameter, especially in developing countries such as Malaysia, appear to be in scarcity. Hence, this study determined the maximum acceptable frequency of lift (MAFL) for combined manual material handling (MMH) tasks amongst Malaysian males.
METHOD: Two lifting loads were considered in this study: 1 kg and 5 kg. Each subject adjusted his frequency of lifting using a psychophysical approach. The subjects were instructed to perform combined MMH task as fast as they could over a period of 45 minutes without exhausting themselves or becoming overheated. The physiological response energy expenditure was recorded during the experimental sessions. The ratings of perceived exertion (RPE) for four body parts (forearms, upper arm, lower back and entire body) were recorded after the subjects had completed the instructed task.
RESULTS: The mean frequencies of the MMH task had been 6.8 and 5.5 cycles/minute for lifting load of 1 and 5 kg, respectively, while the mean energy expenditure values were 4.16 and 5.62 kcal/min for 1 and 5 kg load, respectively. These displayed a significant difference in the Maximum Acceptable Frequency of Lift (MAFL) between the two loads, energy expenditure and RPE (p < 0.05) whereby the subjects appeared to work harder physiologically for heavier load.
CONCLUSION: It can be concluded that it is significant to assess physiological response and RPE in determining the maximum acceptable lifting frequency at varied levels of load weight. The findings retrieved in this study can aid in designing tasks that do not exceed the capacity of workers in order to minimise the risk of WRMSDs.

Matched MeSH terms: Lifting*
Underwater DVI: Simple fingerprint technique for positive identification

Khoo LS, Hasmi AH, Mahmood MS, Vanezis P

Forensic Sci Int, 2016 Sep;266:e4-e9.
PMID: 27567043 DOI: 10.1016/j.forsciint.2016.08.019

An underwater disaster can be declared when a maritime accident occurred or when an aircraft is plunged into water area, be it ocean, sea or river. Nevertheless, handling of human remains in an underwater recovery operation is often a difficult and demanding task as working conditions may be challenging with poor to no visibility, location of remains at considerable depths and associated hazards from surrounding water. A case of the recent helicopter crash, into a famous river in Sarawak, domiciled by huge crocodiles, is discussed in this paper. Search and recovery team as well as the combat divers from the Special Elite Troop Commando, known as VAT 69, were deployed to the scene to perform the underwater recovery to search for all the victims on board involving five Malaysians with a pilot of Philippines nationality. This paper highlights the limitations and challenges faced during the underwater search and recovery. All the bodies recovered were in moderate decomposition stage with crushed injuries and mutilated face and body. A simple and conventional fingerprint technique were used to record the fingerprint. The prints impressions were later photographed using a smartphone and transferred back to the RMP headquarters in Kuala Lumpur for fingerprint match by using WhatsApp Messenger, a phone application. All the first five victims were identified within an average of 10min. The last victim recovered was the pilot. For foreign nationals, the Immigration Department of Malaysia will record the prints of both index fingers only. The lifting of the fingerprint of the last victim was the most challenging in which only one index finger left that can be used for comparison. A few techniques were attempted using the black printer's ink, glass and tape techniques for the last victim. Subsequently, images of the prints impression were taken using the same smartphone with additional macro lens attached to it to enhance the resolution. The images were transferred to the RMP headquarters through WhatsApp Messenger. The prints were confirmed to be the pilot 20min later.

Matched MeSH terms: Lifting
Physiological characteristics of elite and sub-elite badminton players

Ooi CH, Tan A, Ahmad A, Kwong KW, Sompong R, Ghazali KA, et al.

J Sports Sci, 2009 Dec;27(14):1591-9.
PMID: 19967588 DOI: 10.1080/02640410903352907

The aims of this study were to establish the physical and physiological attributes of elite and sub-elite Malaysian male badminton players and to determine whether these attributes discriminate elite players from sub-elite players. Measurements and tests of basic anthropometry, explosive power, anaerobic recovery capacity, badminton-specific movement agility, maximum strength, and aerobic capacity were conducted on two occasions, separated by at least one day. The elite (n = 12) and sub-elite (n = 12) players' characteristics were, respectively: mean age 24.6 years (s = 3.7) and 20.5 years (s = 0.7); mass 73.2 kg (s = 7.6) and 62.7 kg (s = 4.2); stature 1.76 m (s = 0.07) and 1.71 m (s = 0.05); body fat 12.5% (s = 4.8) and 9.5% (s = 3.4); estimated VO(2max) 56.9 ml . kg(-1) . min(-1) (s = 3.7) and 59.5 ml . kg(-1) . min(-1) (s = 5.2). The elite players had greater maximum absolute strength in one-repetition maximum bench press (P = 0.015) compared with the sub-elite players. There were significant differences in instantaneous lower body power estimated from vertical jump height between the elite and sub-elite groups (P < 0.01). However, there was no significant difference between groups in shuttle run tests and on-court badminton-specific movement agility tests. Our results show that elite Malaysian male badminton players are taller, heavier, and stronger than their sub-elite counterparts. The test battery, however, did not allow us to discriminate between the elite and sub-elite players, suggesting that at the elite level tactical knowledge, technical skills, and psychological readiness could be of greater importance.

Matched MeSH terms: Weight Lifting
Fulltext Historical perspective on the synonymization of the four major pest species belonging to the Bactrocera dorsalis species complex (Diptera, Tephritidae)

Hee AK, Wee SL, Nishida R, Ono H, Hendrichs J, Haymer DS, et al.

Zookeys, 2015.
PMID: 26798266 DOI: 10.3897/zookeys.540.6028

An FAO/IAEA-sponsored coordinated research project on integrative taxonomy, involving close to 50 researchers from at least 20 countries, culminated in a significant breakthrough in the recognition that four major pest species, Bactrocera dorsalis, Bactrocera philippinensis, Bactrocera papayae and Bactrocera invadens, belong to the same biological species, Bactrocera dorsalis. The successful conclusion of this initiative is expected to significantly facilitate global agricultural trade, primarily through the lifting of quarantine restrictions that have long affected many countries, especially those in regions such as Asia and Africa that have large potential for fresh fruit and vegetable commodity exports. This work stems from two taxonomic studies: a revision in 1994 that significantly increased the number of described species in the Bactrocera dorsalis species complex; and the description in 2005 of Bactrocera invadens, then newly incursive in Africa. While taxonomically valid species, many biologists considered that these were different names for one biological species. Many disagreements confounded attempts to develop a solution for resolving this taxonomic issue, before the FAO/IAEA project commenced. Crucial to understanding the success of that initiative is an accounting of the historical events and perspectives leading up to the international, multidisciplinary collaborative efforts that successfully achieved the final synonymization. This review highlights the 21 year journey taken to achieve this outcome.

Matched MeSH terms: Lifting
Fulltext A survey on working postures among Malaysian industrial workers

Raemy Md. Zein, Noorul Azreen Azis, Isa Halim, Adi Saptari, Seri Rahayu Kamat

Journal of Occupational Safety and Health, 2015;12(1):125-131.
MyJurnal

Working in a safe working posture is a necessity to enhance occupational health of industrial workers. Poor
working posture may lead to injuries, discomfort and fatigue to the workers. The objective of this study is to survey the
postures practised by the Malaysian industrial workers. A questionnaire survey was performed among 282 Malaysian
industrial workers in 10 different industries. From the answered questionnaire, it was observed that shoulder at chest
level (30.1%), back in a bent forward (33.3%) and lifting heavy load (44.7%) are the major work postures practised by
most of industrial workers. This survey identifies that working with shoulder and hand at chest level and back region
moderately bent forward is the main working posture practice by worker. Workers also reported lifting load below 5 kg
at the workstation. This survey recommended for industrial workers to be aware of the comfortable working posture
to avoid injury.

Matched MeSH terms: Lifting
Fulltext Manual handling process on concrete panel lifting using ergonomic approach

Hussein Md Zan, Shapie, Sinatu Sadiah, Rahim Ishak, Md Saifuddin Yusop, Seri Rahayu Kama

Journal of Occupational Safety and Health, 2019;16(2):31-39.
MyJurnal

Precast concrete panel is one of the Industrial Building System (IBS) components currently used in modern construction industry, especially, in a highly populated urban area in Malaysia, owing to its cost and time efficiency in a project completion. However, the constraints lie in Musculoskeletal Disorders (MSDs) when IBS workers manually lift the concrete panel repeatedly. The aim of this study is to analyze the recommended weight limit (RWL), lifting index (LI) and physiological experience among workers while lifting precast concrete panel with 3300mm x 600mm size and compressive strength of 40MPa. The methods involved include a survey through the Nordic questionnaires, interview sessions, NIOSH lifting index calculation, recommended work limit calculation, Rapid Upper Limb Assessment (RULA) and video recording. The results yielded the MSDs problem. The guidelines of recommended weight limit and lifting index are produced. They benefit workers and increase their awareness on the MSDs issues.

Matched MeSH terms: Lifting
Fulltext Rula analysis of work-related musculoskeletal disorder Among polypropylene fibrillated yarn industry worker using Digital human modelling (dhm)

Kabilmiharbi, N, Selamat, F.E

Malaysian Journal of Public Health Medicine, 2016;16(101):53-60.
MyJurnal

Manual workers in plastics industry are often exposed to work related discomfort and pain while performing their daily
task. These exposure leads to common occupational diseases such as Work-related Musculoskeletal Disorder (WMSD) or
low back pain (LBP) which in turn will affect their working performance. The main objective for this study is to
analyse the working posture of a manual worker that works in a polypropylene fibrillated yarn industry using RULA
assessment in CATIA P3 V5R14 software. The subject were selected from the packaging area as the manual handling
work are only present in that area. Based on the RULA analysis done by constructing the worker posture in the
software, several awkward postures were identified to be high in risk factors. The postures that is high in risk is
postures 3 which is due to lifting heavy loads and twisting or turning of the trunk. The postures obtained the final
RULA analysis score of 7 and this indicates that changes must be done immediately. It is recommended that the
company should increase the ergonomic awareness among the manual workers especially while performing their work
and to redesign the working posture for the manual workers.

Matched MeSH terms: Lifting
Lower back pain and its association with whole-body vibration and manual materials handling among commercial drivers in Sabah

Awang Lukman K, Jeffree MS, Rampal KG

Int J Occup Saf Ergon, 2019 Mar;25(1):8-16.
PMID: 28978270 DOI: 10.1080/10803548.2017.1388571

A cross-sectional study was undertaken to determine the prevalence of lower back pain (LBP) and its association with whole-body vibration (WBV) and manual materials handling (MMH). We studied 110 commercial vehicle drivers using a self-administered questionnaire and the VI-400Pro human vibration monitor. Prevalence of LBP was 66.4%. The percentage of drivers who had frequent manual handling of heavy loads was 45.5% and those who handled heavy loads in awkward postures accounted for 86.4%. Daily vibration A(8) averaged on the z axis was 0.25 (0.06) m·s-2 and at vector sum was 0.29 (0.07) m·s-2. Daily vibration exposures on the z axis, frequent manual handling of heavy loads and awkward posture during MMH were significantly associated with LBP. Drivers who are exposed to WBV and frequently handle heavy loads manually and with awkward postures probably have more LBP than drivers who are exposed to only one of these risk factors.

Matched MeSH terms: Lifting/adverse effects*
Predictors of musculoskeletal discomfort: A cross-cultural comparison between Malaysian and Australian office workers

Maakip I, Keegel T, Oakman J

Appl Ergon, 2017 Apr;60:52-57.
PMID: 28166899 DOI: 10.1016/j.apergo.2016.11.004

Prevalence and predictors associated with musculoskeletal disorders (MSDs) vary considerably between countries. It is plausible that socio-cultural contexts may contribute to these differences. We conducted a cross-sectional survey with 1184 Malaysian and Australian office workers with the aim to examine predictors associated with MSD discomfort. The 6-month period prevalence of self-reported MSD discomfort for Malaysian office workers was 92.8% and 71.2% among Australian workers. In Malaysia, a model regressing level of musculoskeletal discomfort against possible risk factors was significant overall (F [6, 370] = 17.35; p

Matched MeSH terms: Lifting
Fulltext Psychophysical and physiological study of asymmetric lifting and lowering task for Malaysian males

Mirta Widia, Siti Zawiah Md Dawal, NukmanYusoff

Malaysian Journal of Public Health Medicine, 2016;16(20):99-105.
MyJurnal

Extensive research has been carried out over the years to determine the maximum acceptable weight that a worker is capable of lifting in a given situation among the Occidental populations in the Europe and US. At present, there is a scarcity of studies in which lifting frequency is used as the measuring variable, especially in developing countries such as Malaysia. Therefore, the objective of this study is to determine the effects of lifting loads on the maximum acceptable frequency limit (MAFL), physiological response (muscle activity) and rating of perceived exertion (RPE) for asymmetric lifting and lowering tasks of Malaysian males.Ten male subjects are recruited in this study and they perform asymmetric lifting and lowering tasks repetitively for 30 minutes. Two lifting loads are considered (1) 1 kg and (2) 5 kg. Each of the subjects adjusts his frequency of lifting using a psychophysical approach. The subjects are instructed to perform the lifting and lowering task as fast as they could over duration of 30 minutes without exhausting themselves or becoming overheated. Electromyography (EMG) signals are recorded from four muscles (Right Erector Spinae (RES), Left Erector Spinae (LES), Right Trapezius p Descendenz (RTD) and Left Trapezius p Descendenz (LTD) and analysed in terms of the normalized MVC during asymmetric lifting and lowering tasks. The ratings of perceived exertion (RPE) for four body parts (arms, lower back, shoulders and entire body) are also collected after the subjects have completed the lifting and lowering task. The mean frequency of the lifting and lowering task obtained from the experiment is 13.41 and 9.66 times/minute for a lifting load of 1 and 5 kg, respectively. The results of the independent sample t-test show that load has a statistically significant effect on the maximum acceptable frequency limit (p < 0.05). However, it is found that even though there is an increase in muscle activity and RPE with an increase in lifting load, there is no significant difference in the overall mean muscle activity and RPE (p > 0.05). The percentage decrease in the maximum acceptable frequency for Malaysian males is higher than the Occidental populations for both of the loads investigated in this study.

Matched MeSH terms: Lifting
Fulltext The effects of anxiety among Selangor weightlifters on performance at the national weightlifting competition

Ahmad Fazlan Ghazalli, Mahamad Yusof Abdul Rani, Nelfianty Mohd

Jurnal Sains Sukan & Pendidikan Jasmani, 2017;6(1):45-52.
MyJurnal

The purpose of this study examines the effect of Selangor weightlifters concerns over the performance of the National Weightlifting Championship in Johor Bahru 2015. The sample is Selangor weightlifting athletes aged 13 to 15 years who participated in the national weightlifting championship in Johor Bahru. Data were collected through questionnaires Competitive State Anxiety Inventory (CSAI-2) to measure the level of anxiety (cognitive, somatic, self-confidence). The mean value analysis, the percentage used to determine the level of concern for athletes. Correlation tests were used to examine the association between the phases of concern with the performance of athletes during the competition. The results showed the level of anxiety (cognitive, somatic and self-confidence) athletes a day before the tournament is at a moderate level. Other while, cognitive anxiety level significantly correlated with performance or achievement during the tournament. Therefore, the coaches and athletes must continue to concentrate on the concerns of cognitive intentions to achieve excellent performance in a weightlifting tournament in the future. Researchers suggest the management should seek the help of a sports psychologist to provide psychological training for athletes particularly to address the concerns of cognitive as well as physical exercise by periods of sustained exercise.

Matched MeSH terms: Weight Lifting
Fulltext Predictors of low back pain among secondary school teachers in Malaysia: a longitudinal study

Zamri EN, Hoe VCW, Moy FM

Ind Health, 2020 Jun 09;58(3):254-264.
PMID: 31666460 DOI: 10.2486/indhealth.2019-0106

Low back pain (LBP) is prevalent among workers both in developed and developing countries. School teachers represent a high proportion of the working population in Malaysia. However, there is a lack of longitudinal study on predictors and course of LBP among teachers. Therefore, this study aimed to determine the predictors and course of LBP among secondary school teachers. Longitudinal data of 701 teachers in Selangor, Malaysia were collected from May 2015 to October 2016. Associations between predictors and LBP were analysed using logistic regression and reported as odds ratio (OR) and 95% confidence interval (CI). At 12-month of follow-up, 44% (95%CI: 40.6%, 48.0%) of the participants reported having LBP. In the regression model that included all risk factors, only LBP at baseline (OR 10.43, 95%CI: 6.19, 17.58) was associated with LBP at 12-month follow-up. When LBP at baseline was removed from the model, anxiety symptom (OR 2.51, 95%CI: 1.19, 5.30) and lifting heavy weights (OR 4.16, 95%CI: 1.40, 12.30) were found to be significantly associated with LBP at 12-month follow-up. In conclusion, issues on anxiety and lifting heavy weights should be addressed to reduce the occurrence of LBP despite the presence of health condition itself (LBP at baseline).

Matched MeSH terms: Lifting/adverse effects
Simulation of southwest monsoon current circulation and temperature in the East Coast of Peninsular Malaysia

Daryabor F, Tangang F, Liew J

Sains Malaysiana, 2014;43:389-398.

This study investigates the southwest monsoon circulation and temperature along the east coast of Peninsular Malaysia by using the Regional Ocean Modeling System at 9 km resolution. The simulated circulation shows strong northward flowing western boundary currents along the east coast of Peninsular Malaysia with maximum speed of approximately of 0.6-0.7 ms-1. The western boundary current, that extends to a depth of about 35 m, continues flowing northward up to approximately 7oN where it changes direction eastward. The circulation along the east coast of Peninsular Malaysia is also characterized by two anti-cyclonic eddies. Furthermore, an elongated of cooler sea surface temperature that stretches along the coast was also simulated. The existence of this cool SST pattern is associated with coastal upwelling process due to localized lifting of isotherms near the coast as a response to the southerly-southwesterly wind stress along the coast during the southwest monsoon.

Matched MeSH terms: Lifting
Fulltext Prevalence and Risk Factors Associated with Low Back Among Health Care Providers in a District Hospital

Wong, T.S., Teo, N., Kyaw, M.).

Malays Orthop J, 2010;4(2):23-28.
MyJurnal

Study design: A cross-sectional study among health care providers working at one hospital. Objective: To investigate the prevalence, the consequences and the risk factors associated with low back pain (LBP) among hospital staff. Materials and Methods: The study sample consisted of 931 health care providers who answered a pre-established questionnaire including 30 items in two languages. Results: The cumulative life-prevalence of LBP was 72.5% and the yearly prevalence was 56.9%. Chronic LBP prevalence was noted 5.1% of the cases. Treatment was sought in 34.1% of LBP sufferers and 7.3% required sick leave or absence from work due to LBP. Risk factors associated with LBP were professional categories, bad body posture, lifting objects or patients and the increased levels of lifting, levels of job satisfaction and stressful job demands. Conclusion: There was a high prevalence of LBP among hospital staff, resulting in significant medical and socio-professional consequences. Many risk factors were identified that would necessitate multidisciplinary involvement to reduce the LBP incidence and related costs.

Matched MeSH terms: Lifting
Fulltext Comparison between two methods of variable resistance training on body composition, muscular strength and functional capacity among untrained males

Amir Bahram Kashiani, Kim, Geok Soh, Kim, Lam Soh, Swee, Leong Ong, Kittichottipanich, Boonsrin

Movement Health & Exercise, 2020;9(1):45-66.
MyJurnal

Several studies have shown a positive association between variable resistance training (VRT) and improvements in muscular performance. However, the effects of VRT on body composition among untrained individuals remain unclear. The objective of this study was to examine the comparison between of methods of VRT on body composition, muscular strength and functional capacity among untrained male adults. Fifty healthy untrained males (age: 21.5 ± 1.95 years) were selected randomly and assigned into three groups: combined weight and chain (WC), combined weight and elastic band (WE), and free-weight (CG). All three groups completed 12 weeks of high intensity resistance training (70-80% of one-repetition maximum) with three sets of 8-12 repetitions two times per week. Approximately 65% of the whole resistance was provided by free-weights, while the other 35% of the resistance was provided by chains and elastic bands for the WC and WE groups, respectively. Dependent variables including body composition, muscular strength and functional capacity using bioelectrical impedance analyzer, one-repetition maximum and maximum repetitions to muscular fatigue were measured, respectively in pre-test, post-test 1 (week 6) and post-test 2. Significance level was set at P < 0.05. No differences existed among all groups at baseline for depended variables. A mixed model ANOVA with repeated measurements analysis revealed that although there were not significant differences in body composition among the groups (P > 0.05), all groups showed a significant reduction in fat mass and significant increase in fat-free mass during and after the intervention (P = 0.0001), and these differences were insignificantly greater in WE and WC groups compared with CG group. Furthermore, all three groups showed significant improvements in muscular strength and functional capacity during and after intervention (P = 0.0001), and muscular strength and functional capacity were greater in WE and WC groups compared with the CG group, but there were not significant differences in muscular strength and functional capacity between WE and WC groups. However, the WE group showed insignificantly more improvement in muscular strength and functional capacity compared with the WC group during and after the intervention. The results of this study show that VRT has a slightly better effect than free-weight to improve body composition during and after 12 weeks intervention. Also, WE training had a slightly better effect than WC training in improving muscular strength and functional capacity during and after 12 weeks of VRT among untrained male adults.

Matched MeSH terms: Weight Lifting
Fulltext Partial Annuloplasty Rings in the Repair of Functional Ischemic Mitral Regurgitation

Kunwar MA, Muhammad I, Khan MN, Sumreen B, Soomro NA, Naseeb K, et al.

Cureus, 2020 Jun 03;12(6):e8419.
PMID: 32642335 DOI: 10.7759/cureus.8419

Background Acute myocardial infarction (MI) is the leading cause of worldwide cardiac morbidities and mortalities. Mitral regurgitation (MR) is a common complication of MI. The severity of ischemic MR (IMR) can range widely, both clinically and hemodynamically. Mitral valve (MV) repair by lifting annuloplasty is a surgical procedure used to correct the pathology of IMR. The immediate outcomes of this technique have not yet been determined. The present study, therefore, evaluated the immediate results of MV annuloplasty performed to complement MV repair in patients with IMR. Methodology All adult patients with IMR who underwent lifting posterior mitral annuloplasty (LPMA) plus concomitant coronary artery bypass grafting (CABG) were included. Immediate outcomes were evaluated by transesophageal color Doppler echocardiography. The frequency of successful outcomes was compared in patients with different baseline characteristics. Results Posterior mitral annuloplasty was successful in 93.1% of patients, including in 92.8% of men and 94.1% of women. The percentages of successful immediate outcomes differed significantly in patients with and without diabetes and hypertension, and in patients with two- and three-vessel disease. Conclusion LPMA resulted in a high percentage of successful immediate outcomes in patients with IMR. Further studies should compare rates of immediate, intermediate, and late outcomes of this technique.

Matched MeSH terms: Lifting
Fulltext Injury Incidence, Patterns, and Risk Factors in Functional Training Athletes in an Asian Population

Cheng TTJ, Mansor A, Lim YZ, Hossain Parash MT

Orthop J Sports Med, 2020 Oct;8(10):2325967120957412.
PMID: 33195710 DOI: 10.1177/2325967120957412

Background: Functional training, also known as CrossFit, is a unique sport that combines weightlifting, gymnastics, and metabolic conditioning into a single program. There are an estimated 50 functional training centers in Malaysia.
Purpose: To analyze the injury rates, patterns, and risk factors of functional training/CrossFit.
Study Design: Descriptive epidemiology study.
Methods: Electronic questionnaires were distributed to 244 participants from 15 centers in the country. Descriptive data regarding the athletes, injury occurrence within the past 6 months, injury details, and risk factors were collected.
Results: Of the 244 athletes, 112 (46%) developed at least 1 new injury over the previous 6 months. Injury rates were significantly higher in athletes from nonaffiliate training gyms compared with CrossFit-affiliated gyms, in athletes with previous injuries, and in those who perceived themselves as having more than average fitness.
Conclusion: Coaches and athletes need to be more aware of risk factors for injury to enable safer and better training strategies.

Matched MeSH terms: Weight Lifting
Fulltext Prevalence and its associated factors of low back pain among foggers in a District Health Office in Malaysia

Muhamad Farhan Ab Razak, Titi Rahmawati Hamedon, Haidar Rizal Toha

Malaysian Journal of Medicine and Health Sciences, 2019;15(104):109-109.
MyJurnal

Introduction: Low back pain (LBP) is a common symptom among working population worldwide. Foggers prone to have LBP because there are exposed to physical factors such as lifting heavy object, awkward body posture and vibration. However, LBP had never been studied among the fogger. The objective of this study was to determine the prevalence and the factors associated with LBP. Methods: A cross-sectional study was carried out in all District Health Office in Johor, Malaysia by using a validated self-administered questionnaire and anthropometric measure-ments. Chi-square or Fisher’s exact test was used for inferential statistic and multiple logistic regression was used to determine the associated factors. The significance level was determined at p < 0.05. Results: The response rate was 83.9%. Majority of them are male (99.6%), Malay (95.8%), married (85.8%) and educated up to secondary school (53.5%). Majority of respondents do not have part time job (89.6%) but they work overtime everyday (62.7%). Most of them do four hours overtime daily (77.3%). The prevalence of LBP was 68.5% among respondents. There was a significant association between doing part time job, duration of doing overtime per week, body mass index (BMI) and duration of fogging activities. Finally, the associated factors of LBP were doing overtime for more than 20 hours per week (adjusted OR=1.914, 95% CI [1.102, 3.324], p = 0.021), BMI of more than 23.00 kg/m2 (adjusted OR=2.066, 95% CI [1.090, 3.916], p = 0.026) and having no part time job (adjusted OR=0.135, 95% CI [0.031, 0.599], p = 0.021). Conclusion: Prevention needs to be initiated to change the modifiable factors of LBP in order to reduce the prevalence of LBP among them.

Matched MeSH terms: Lifting

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