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Coronavirus disease 2019 (COVID-19) caused by SARS-CoV-2 has spread at an alarming rate worldwide. Its dominant feature is arterial hypoxemia seen due to ventilation perfusion mismatch. This causes reduced oxygen diffusion that affects functional capacity. Six-minute walk test is one of the commonly used test which is used to assess functional ability. However, it is more time-consuming and requires a 30-m corridor which is not always easily available. Studies have shown that the 1-minute sit to stand test (1-MSTST) is also useful for assessing functional capacity of patients with respiratory dysfunction. The aim of the study was to understand COVID-19 patient’s response to 1-MSTST with respect to number of repetitions, oxygen saturation, heart rate and perceived rate of exertion. Statistically significant difference was seen in pre and post parameters of heart rate (Pre: 91.73 ±17.12, Post: 116.06 ± 20.18, p< 0.0001); SpO2 (Pre: 97.04 ± 3.37, Post: 95.40 ± 3.93, p=0.005) and RPE (Pre: 0. 07 ± 0.25, Post: 1.49 ± 1.22, p< 0.0001). A mean of 21.26 ± 6.84 repetitions of sit to stand were performed in a minute. COVID-19 patients, thus, have significantly reduced functional capacity similar to that of patients with other respiratory dysfunctions. Thus, results of this study will enable therapist to plan the rehabilitation in COVID-19 patients to improve their functional capacity. This will enhance their ability to perform in activities of daily living and to participate in societal work and therefore will help in improving their quality of life. Key words: COVID-19, Physiotherapy, Sit to stand test, Functional Capacity Rehabilitation.

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Study Design. Translation and psychometric testing. Objectives. To cross-culturally adapt the Neck Disability Index (NDI) into the Hindi language, the local language of India, and to investigate the psychometric properties of the Neck Disability Index-Hindi (NDI-H) version in patients with neck pain. Summary of Background Data. The NDI is the most used selfreported outcome measure for neck pain. The previous NDI-H version did not obtain advance permission from Mapi trust to translate this scale. As a result, this scale's availability is limited. Materials and Methods. Following established guidelines, the NDI was translated and culturally adapted into Hindi. A total of 120 chronic neck pain patients (20 for cognitive interviews and 100 for psychometric testing) participated in this study. The content validity, construct validity, internal consistency, test-retest reliability, and responsiveness of the NDI-H were all evaluated. The intraclass correlation coefficient was computed to determine test-retest reliability. Internal consistency was assessed using Cronbach α. The NDI's factor structure was investigated using principal component factor analysis. The Neck Pain and Disability Scale, Numeric Pain Rating Scale, and Anxiety and Depression scales were used to test criterion validity. The receiver operating characteristic curve analysis was used to determine the cut-off point and the area under the curve. Results. The NDI-H demonstrated good test-retest reliability (intraclass correlation coefficient = 0.92) and excellent internal consistency (Cronbach α = 0.90). The one-factor structure was revealed by the factor analysis. The NDI has a strong relationship with the Neck Pain and Disability Scale and Numeric Pain Rating Scale, as well as the Anxiety and Depression scales. The cut-point for detecting a change was 9.3. Conclusions. The NDI was successfully translated into Hindi in this study. The NDI-H is a reliable and valid and responsive instrument that can be used to treat patients with chronic neck pain in clinical and research settings.