PREVALENCE OF TRAPEZIUS MUSCLE TIGHTNESS DUE TO POOR POSTURE IN TEACHERS: A CROSS-SECTIONAL STUDY
DOI:
https://doi.org/10.71000/7jrzpp23Keywords:
Ergonomics, Faculty, ; Muscle Tightness, Neck Pain, Posture, Trapezius Muscle, ; WorkloadAbstract
Background: Musculoskeletal disorders are a common occupational health issue, with trapezius muscle tightness frequently observed among teachers due to prolonged standing, repetitive tasks, and sustained head-down postures. Such conditions contribute to cervical spine stiffness, pain, and reduced quality of life. Despite being highly prevalent, limited data are available from Pakistan, particularly regarding teachers in Karachi, who often face challenging working conditions and heavy workloads.
Objective: This study aimed to determine the prevalence of trapezius muscle tightness among school teachers in Karachi and to identify associated risk factors including age, teaching experience, weekly working hours, and pain intensity.
Methods: A cross-sectional design was employed from August 2024 to January 2025. A total of 383 teachers, aged 20–45 years, were recruited through convenience sampling. Participants were assessed using validated tools including the Visual Analog Scale (VAS) for pain severity and the Neck Disability Index (NDI) for functional disability. Demographic and occupational characteristics such as gender, teaching experience, and working hours were recorded. Data were analyzed using SPSS version 26.0, with descriptive statistics and chi-square tests applied to explore associations between risk factors and trapezius tightness.
Results: Of the 383 participants, 318 (83.0%) were female and 65 (17.0%) were male. Disability on the NDI was observed in 232 participants (60.6%), while 151 (39.4%) reported no disability. Pain severity was widely distributed, with 132 (34.5%) reporting moderate pain, 48 (12.5%) severe pain, and 29 (7.6%) very severe pain. Significant associations were found between higher disability scores and advancing age (p = 0.02), greater weekly workload (p < 0.001), and increased pain intensity (p < 0.001). Teaching experience and gender showed no significant associations.
Conclusion: The findings demonstrate a high prevalence of trapezius muscle tightness among teachers, strongly influenced by workload, age, and pain severity. These results highlight the urgent need for ergonomic interventions, structured rest breaks, and posture correction programs to safeguard teachers’ musculoskeletal health and improve their quality of life.
References
Ourieff J, Scheckel B, Agarwal A. Anatomy, Back, Trapezius. 2023 Mar 11. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Jan–. PMID: 30085536.
Villanueva A, Rabal-Pelay J, Berzosa C, et al. Effect of a Long Exercise Program in the Reduction of Musculoskeletal Discomfort in Office Workers. International Journal of Environmental Research and Public Health. 2020 Dec;17(23):E9042.
Portnoy S, Cohen S, Ratzon NZ. Correlations between body postures and musculoskeletal pain in guitar players. Plos one. 2022 Jan 4;17(1):e0262207.
Pelland L, Gilchrist IA, Mesfar W, Lommen J, Moglo K. Predictive Contribution of the Superficial Neck Muscles to Short-Latency Rate of Force Development of the Head and Neck. Int J Sports Physiol Perform. 2023;18(10):1179-88.
Olesiejuk M, Chalimoniuk M, Sacewicz T. Myofascial trigger points therapy increases neck mobility and reduces headache pain in migraine patients - pilot study. BMC Musculoskelet Disord. 2025;26(1):105.
Florencio LL, de Oliveira AS, Will-Lemos T, Pinheiro CF, Marçal J, Dach F, et al. Muscle endurance and cervical electromyographic activity during submaximal efforts in women with and without migraine. Clin Biomech (Bristol). 2021;82:105276.
Baszczowski M, Dolina A, Zawadka M, Ginszt M, Czarnecki A, Ginszt A, et al. Masticatory and Neck Muscles' Isometric Endurance and Their Relation to Upper Limb Isometric Grip Strength in Sport Climbers-Preliminary Investigation. Medicina (Kaunas). 2024;60(12).
Kissane RWP, Askew GN. The importance of muscle activation on the interpretation of muscle mechanical performance. J Exp Biol. 2024;227(21).
Leung KKY, Fong R, Zhu M, Li G, Chan JYK, Stewart M, et al. High-Density Surface Electromyography for Swallowing Evaluation in Post-Radiation Dysphagia. Laryngoscope. 2023;133(11):2920-8.
Nyländen P, Virmavirta M, Sovelius R, Kyröläinen H, Honkanen T. A Flight Helmet-Attached Force Gauge for Measuring Isometric Neck Muscle Strength. Aerosp Med Hum Perform. 2023;94(6):480-4.
Tomita Y, Suzuki Y, Tanaka Y, Hasegawa Y, Yoshihara Y, Okura K, et al. Effects of sitting posture and jaw clenching on neck and trunk muscle activities during typing. J Oral Rehabil. 2021;48(5):568-74.
Osama M. Effects of autogenic and reciprocal inhibition muscle energy techniques on isometric muscle strength in neck pain: A randomized controlled trial. J Back Musculoskelet Rehabil. 2021;34(4):555-64.
Veeranki YR, Garcia-Retortillo S, Papadakis Z, Stamatis A, Appiah-Kubi KO, Locke E, et al. Detecting Psychological Interventions Using Bilateral Electromyographic Wearable Sensors. Sensors (Basel). 2024;24(5).
Florencio LL, de Oliveira AS, Pinheiro CF, Will-Lemos T, Dach F, Fernández-de-Las-Peñas C, et al. Comparison of cervical muscle isometric force between migraine subgroups or migraine-associated neck pain: a controlled study. Sci Rep. 2021;11(1):15434.
Amjad M, Ur Rehman SS, Fatima G, Ikram M, Ghafoor S. Comparative effects of isometric and isotonic global neck muscles strengthening exercise programme on pain, range of motion, strength, function and quality of life in patients with chronic mechanical neck pain. J Pak Med Assoc. 2024;74(10):1843-6.
Shamsi H, Khademi-Kalantari K, Akbarzadeh-Baghban A, Izadi N, Okhovatian F. Cervical flexion relaxation phenomenon in patients with and without non-specific chronic neck pain. J Back Musculoskelet Rehabil. 2021;34(3):461-8.
Rodrigues A, Bevilaqua-Grossi D, Florencio LL, Pinheiro CF, Dach F, Bigal M, et al. Balance alterations are associated with neck pain and neck muscle endurance in migraine. Musculoskelet Sci Pract. 2023;66:102811.
Nagai T, Schilaty ND, Wong H, Keller VC, Stiennon ST, Chang RWB, et al. Acute effects of an isometric neck warm-up programme on neck performance characteristics and ultrasound-based morphology. Ann Med. 2023;55(2):2295402.
Young BA, Koppenhaver SL, Timo-Dondoyano RM, Baumann K, Scheirer VF, Wolff A, et al. Ultrasound shear wave elastography measurement of the deep posterior cervical muscles: Reliability and ability to differentiate between muscle contraction states. J Electromyogr Kinesiol. 2021;56:102488.
Toledano N, Dar G. Ultrasonographic measurements of the omohyoid muscle during shoulder muscles contraction. J Ultrasound. 2023;26(3):711-6.
Govender S, Rosengren SM. Quantifying the effects of electrode placement and montage on measures of cVEMP amplitude and muscle contraction. J Vestib Res. 2021;31(1):47-59.
Kraemer K, Moreira MF, Guimarães B. Musculoskeletal pain and ergonomic risks in teachers of a federal institution. Revista Brasileira de Medicina do Trabalho. 2021 Feb 11;18(3):343.
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Copyright (c) 2025 Alina Aslam, Ameesha Kumari, Arsheen, Fatima Abbasi, Khushboo Qureshi, Mehak, Nisha Kumari (Author)
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