User profiles for Christina Ma

Christina Zong-hao MA

Assistant Professor, The Hong Kong Polytechnic University
Verified email at polyu.edu.hk
Cited by 508

[HTML][HTML] Balance improvement effects of biofeedback systems with state-of-the-art wearable sensors: A systematic review

CZH Ma, DWC Wong, WK Lam, AHP Wan, WCC Lee - Sensors, 2016 - mdpi.com
Falls and fall-induced injuries are major global public health problems. Balance and gait
disorders have been the second leading cause of falls. Inertial motion sensors and force …

Effects of high-dose vitamin D2 versus D3 on total and free 25-hydroxyvitamin D and markers of calcium balance

A Shieh, RF Chun, C Ma, S Witzel… - The Journal of …, 2016 - academic.oup.com
Context: Controversy persists over: 1) how best to restore low serum 25-hydroxyvitamin D (25D)
levels (vitamin D2 [D2] vs vitamin D3 [D3]); 2) how best to define vitamin D status (total […

Effects of cholecalciferol vs calcifediol on total and free 25-hydroxyvitamin D and parathyroid hormone

A Shieh, C Ma, RF Chun, S Witzel… - The Journal of …, 2017 - academic.oup.com
Context: Vitamin D deficiency disproportionately affects nonwhite individuals. Controversy
persists over how to best restore low 25D levels, and how to best define vitamin D status [total (…

[HTML][HTML] Homelessness and health

J Turnbull, W Muckle, C Masters - Cmaj, 2007 - Can Med Assoc
They are discouraged by a system that works for others but that works against them. For
example, negotiating a complex health care system is almost impossible for many. Despite their …

[HTML][HTML] The effect of adding real-time postural feedback in balance and mobility training in older adults: a systematic review and meta-analysis

…, ESL Fan, PK Lam, WT Kwok, CZH Ma… - Archives of gerontology …, 2024 - Elsevier
Objectives This study aimed to systematically review the additional value of providing real-time
postural feedback during balance and mobility training in older people. Methods PubMed…

[HTML][HTML] Balance-controlling mechanism and fall-prevention strategy

CZH Ma, RTL Zhu, M Huang, WCC Lee, Y Yang… - Frontiers in …, 2024 - frontiersin.org
Falls and fall-related injuries and deaths burden society heavily. Balance and gait disorders
are the primary cause of falls in older adults. Currently, evidence-based training regimens …

Causes of transformer failures and diagnostic methods–A review

AJ Christina, MA Salam, QM Rahman, F Wen… - … and Sustainable Energy …, 2018 - Elsevier
This paper presents a review on the sources of failures of transformer in the substation.
Different investigations and test analyses have been conducted to identify the root causes of …

Symptom burden, health status, and productivity in patients with uncontrolled and controlled severe asthma in novelty

…, F Malin, FW Titti, F Stefan, K Christina… - Journal of Asthma …, 2023 - Taylor & Francis
Background Few studies have quantified symptom burden, health status, and productivity in
patients with uncontrolled and controlled severe asthma. Up-to-date, real-world, global …

[HTML][HTML] Genome analysis of three Pneumocystis species reveals adaptation mechanisms to life exclusively in mammalian hosts

L Ma, Z Chen, DW Huang, G Kutty, M Ishihara… - Nature …, 2016 - nature.com
Pneumocystis jirovecii is a major cause of life-threatening pneumonia in immunosuppressed
patients including transplant recipients and those with HIV/AIDS, yet surprisingly little is …

Multi-cancer analysis of clonality and the timing of systemic spread in paired primary tumors and metastases

Z Hu, Z Li, Z Ma, C Curtis - Nature genetics, 2020 - nature.com
Metastasis is the primary cause of cancer-related deaths, but the natural history, clonal evolution
and impact of treatment are poorly understood. We analyzed whole-exome sequencing …