RÉSUMÉ
Background: The neck pain is common problem in the adult population. Neck muscles have the potential to regulate the neck movement and to maintain its physiological functions and hence should have a quantitative value for strength. The aim of this study was to evaluate the neck muscle strength which would be used as a reference in the analysis of neck pain. Further aim of this study was to analyze the effect of age, weight, height, gender, body mass index (BMI) on muscle strength. Methods: This study was an observational study conducted at physiotherapy department of I. T. S. Institute of Health and Allied Sciences from 23 September 2023 to 24 February 2024.The study comprised 1200 participants, both male and female, in the age group of 21 to 50 years old. Isometric strength measurements for several neck muscles were made using a handheld dynamometer after ethical approval. Normative strength values were calculated, and multivariate analysis was performed to conclude the effect of age, weight, height, gender and BMI on neck muscle strength. Data analysis was calculated using statistical package for the social sciences (SPSS) version 21.0. Results: Males are at lower risk than females to develop neck pain as males are having more strength than females in all age groups. Weight and age were positively associated with muscle strength (p<0.5). Height and BMI showed no significant correlation to muscle strength (p>0.5). Conclusions: This research provides the normative ranges of neck muscle strength in the adult population that will serve as a baseline and aid in prevention, maintenance and treatment of neck pain. It provides the standard for the clinician to compare the muscle strength of different age groups and unaffected.
RÉSUMÉ
Thyroid hormone serves as an indispensable component for the optimum functioning of various biological systems. They curb body’s metabolism, regulates the estrogen level, regulates bone turnover, essential for skeletal development and mineralization. Within the scope of knowledge, it is intimately familiar that thyroid disorders have widespread systemic manifestations, among which in hypothyroidism, even though elevated TSH (thyroid-stimulating hormone) may reduce estrogen level which in turn stimulates osteoclasts and thus cause osteoporosis, while hyperthyroidism accelerates bone turnover. Hypothyroidism does not directly interfere with the skeletal integrity, but treatment with levothyroxine for the suppression of TSH to bring the hypothyroid patient to euthyroid state for a long haul; lead to simultaneous reduction in bone mass and in (bone mineral density) BMD. After the initial relevation of the correlation between thyroid disorders and osteoporosis in numerous studies have emphasized that both hypo and hyperthyroidism either directly or indirectly affects the bone mineral density or leads to the progression of osteoporosis. Therefore the present study is aimed and so designed to review all the possible associations between them and the impact of thyroid disorders on estrogen level and bone mineral density. The main findings of this review indicate that both excesses as well as deficiency of thyroid hormone can be potentially deleterious for bone tissue.