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Fong SSM, Chung LMY, Yam TTT, Chung JWY, Bae YH, Gao Y, Chan JSM, Wang HK. Effects of Ving Tsun sticking-hand training on lower limb sensorimotor performance among community-dwelling middle-aged and older adults: a randomized controlled trial. Trials 2023; 24:143. [PMID: 36841770 PMCID: PMC9960190 DOI: 10.1186/s13063-023-07133-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 02/04/2023] [Indexed: 02/27/2023] Open
Abstract
BACKGROUND To explore the effects of Ving Tsun (VT) sticking-hand training on knee joint proprioception and leg muscular performance among community-dwelling middle-aged and older adults. METHODS Thirty-three middle-aged and older adults were randomly assigned to either the VT or control group. The VT group received sticking-hand training twice/week for 3 months. Data were collected before and after the intervention period. The primary outcome was knee joint repositioning error, which was measured using knee joint active repositioning tests. The secondary outcomes included the maximum muscle strength and time to maximum muscle strength of the major leg muscles. RESULTS No significant group, time, or group-by-time interaction effects were found for the knee joint repositioning error (p > 0.05). The maximum muscle strength of the knee flexors increased over time in the VT group only (p = 0.038). In addition, the time to maximum muscle strength in the hip extensors and flexors increased over time in both groups (p < 0.05). For the knee extensors and flexors, the time to maximum muscle strength increased in the control (p = 0.027) and VT (p = 0.019) groups, respectively, over time. CONCLUSIONS VT sticking-hand training could improve the maximum muscle strength of the knee flexors but could not attenuate the age-related deterioration in leg muscle contraction speed nor improve knee joint proprioception among community-dwelling middle-aged and older adults. TRIAL REGISTRATION ClinicalTrials.gov NCT03318289. Registered on 23 October 2017.
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Affiliation(s)
- Shirley S. M. Fong
- grid.419993.f0000 0004 1799 6254Department of Health and Physical Education, The Education University of Hong Kong, Tai Po, Hong Kong ,Hong Kong Martial Arts Institute, Kowloon, Hong Kong
| | - Louisa M. Y. Chung
- grid.419993.f0000 0004 1799 6254Department of Health and Physical Education, The Education University of Hong Kong, Tai Po, Hong Kong
| | - Timothy T. T. Yam
- Department of Physiotherapy, School of Nursing and Health Studies, The Hong Kong Metropolitan University, Kowloon, Hong Kong
| | - Joanne W. Y. Chung
- School of Nursing and Health Studies, The Hong Kong Metropolitan University, Kowloon, Hong Kong
| | - Young-Hyeon Bae
- grid.419707.c0000 0004 0642 3290Department of Healthcare and Public Health, Korea National Rehabilitation Center, Rehabilitation Research Institute, Seoul, 01022 South Korea
| | - Yang Gao
- grid.221309.b0000 0004 1764 5980Department of Sport, Physical Education and Health, The Hong Kong Baptist University, Kowloon, Hong Kong
| | - Jessie S. M. Chan
- grid.194645.b0000000121742757School of Chinese Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Hsing-Kuo Wang
- grid.19188.390000 0004 0546 0241School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University, Taipei City, Taiwan
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Fong SSM, Chung LMY, Schooling CM, Lau EHY, Wong JYH, Bae YH, Chung JWY. Tai chi-muscle power training for children with developmental coordination disorder: a randomized controlled trial. Sci Rep 2022; 12:22078. [PMID: 36543796 PMCID: PMC9769475 DOI: 10.1038/s41598-022-25822-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 12/05/2022] [Indexed: 12/24/2022] Open
Abstract
This study compared the effectiveness of tai chi (TC) muscle power training (MPT), TC alone, MPT alone, and no training for improving the limits of stability (LOS) and motor and leg muscular performance and decreasing falls in children with developmental coordination disorder (DCD). One hundred and twenty-one children with DCD were randomly assigned to the TC-MPT, TC, MPT, or control group. The three intervention groups received TC-MPT, TC, or MPT three times per week for 3 months. Measurements were taken before and after the intervention period. The primary outcomes were the LOS completion time and dynamic LOS scores. The secondary outcomes included the Movement Assessment Battery for Children-Second Edition total test score and percentile rank, knee muscle peak force and time to peak force, and the number of falls. None of the interventions affected the LOS test scores. Improvements in the peak forces of the knee extensors and flexors were demonstrated in the TC (p = 0.006) and MPT groups (p = 0.032), respectively. The number of falls also decreased in these two groups (p < 0.001). Thus, clinicians may prescribe TC or MPT for children with DCD to increase their knee muscle strength and reduce their risk of falls.
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Affiliation(s)
- Shirley S. M. Fong
- grid.419993.f0000 0004 1799 6254Department of Health and Physical Education, The Education University of Hong Kong, Tai Po, N.T, Hong Kong S.A.R. China ,grid.194645.b0000000121742757School of Public Health, The University of Hong Kong, Pokfulam, Hong Kong S.A.R. China
| | - Louisa M. Y. Chung
- grid.419993.f0000 0004 1799 6254Department of Health and Physical Education, The Education University of Hong Kong, Tai Po, N.T, Hong Kong S.A.R. China
| | - Catherine Mary Schooling
- grid.194645.b0000000121742757School of Public Health, The University of Hong Kong, Pokfulam, Hong Kong S.A.R. China ,grid.212340.60000000122985718Graduate School of Public Health and Health Policy, City University of New York, New York, USA
| | - Eric H. Y. Lau
- grid.194645.b0000000121742757School of Public Health, The University of Hong Kong, Pokfulam, Hong Kong S.A.R. China
| | - Janet Y. H. Wong
- grid.194645.b0000000121742757School of Nursing, The University of Hong Kong, Pokfulam, Hong Kong S.A.R. China
| | - Young-Hyeon Bae
- grid.419707.c0000 0004 0642 3290Korea National Rehabilitation Center, Department of Healthcare and Public Health, Rehabilitation Research Institute, Seoul, 01022 Korea
| | - Joanne W. Y. Chung
- School of Nursing and Health Studies, Hong Kong Metropolitan University, Homantin, Hong Kong S.A.R. China
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Cheng YTY, Chung LMY, Chung JWY, Schooling CM, Gao Y, Bae YH, Tsang WWN, Fong SSM. Atypical adaptive postural responses in children with developmental coordination disorder: Implications for rehabilitation. Gait Posture 2022; 98:141-145. [PMID: 36122429 DOI: 10.1016/j.gaitpost.2022.09.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 06/28/2022] [Accepted: 09/09/2022] [Indexed: 02/02/2023]
Abstract
BACKGROUND Adaptive postural control is an important yet underexamined area in children with developmental coordination disorder (DCD). This study compared adaptive postural responses between children with DCD and those with typical development. METHODS This was an exploratory cross-sectional study. Fifty-two children with DCD (aged 6-9 years) and 52 age- and sex-matched children with typical development participated in the study. Their adaptive postural (motor) responses were assessed using the Adaptation Test (ADT) on a computerized dynamic posturography machine. The sway energy score (SES) for each ADT trial and the average SES of five trials for both toes-up and toes-down platform inclination conditions were recorded. RESULTS The SESs were lower in the DCD group than in the control group in ADT toes-up trial 1 (p = 0.009) and on average (p = 0.044). In the control group, the SES decreased from trial 1 to trial 2 for both the ADT toes-up (p = 0.005) and toes-down conditions (p < 0.001). SIGNIFICANCE Adaptive postural responses were absent in children with DCD, and these children used less force (i.e., sway energy) to overcome postural instability. Therefore, both adaptive balance and neuromuscular training should be factored into rehabilitation programs for children with DCD.
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Affiliation(s)
- Yoyo T Y Cheng
- School of Public Health, University of Hong Kong, Hong Kong Special Administrative Region of China
| | - Louisa M Y Chung
- Department of Health and Physical Education, Education University of Hong Kong, Hong Kong Special Administrative Region of China
| | - Joanne W Y Chung
- School of Nursing and Health Studies, Hong Kong Metropolitan University, Hong Kong Special Administrative Region of China
| | - Catherine Mary Schooling
- School of Public Health, University of Hong Kong, Hong Kong Special Administrative Region of China; Graduate School of Public Health and Health Policy, City University of New York, New York, USA
| | - Yang Gao
- Department of Sport, Physical Education and Health, Hong Kong Baptist University, Hong Kong Special Administrative Region of China
| | - Young-Hyeon Bae
- Korea National Rehabilitation Center, Department of Healthcare and Public Health, Rehabilitation Research Institute, Seoul 01022, the Republic of Korea
| | - William W N Tsang
- School of Nursing and Health Studies, Hong Kong Metropolitan University, Hong Kong Special Administrative Region of China; Department of Rehabilitation Sciences, Hong Kong Polytechnic University, Hong Kong Special Administrative Region of China
| | - Shirley S M Fong
- School of Public Health, University of Hong Kong, Hong Kong Special Administrative Region of China; Department of Health and Physical Education, Education University of Hong Kong, Hong Kong Special Administrative Region of China.
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Lam CLY, Fong SSM, Chung JWY, Chung LMY, Liu KPY, Bae YH, Ma AWW. Influence of pelvic padding and Kinesiology Taping on pain perception, kinematics, and kinetics of falls in female volleyball athletes. Gait Posture 2018; 64:25-29. [PMID: 29807269 DOI: 10.1016/j.gaitpost.2018.05.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 04/29/2018] [Accepted: 05/20/2018] [Indexed: 02/02/2023]
Abstract
BACKGROUND Volleyball digging techniques may cause pelvic injuries among female volleyball athletes. Pelvic padding and Kinesiology Taping (KT) may reduce impact force and pain and improve posture during a fall. This study examined the effects of pelvic padding and KT on pain perception, fall kinematics, and kinetics among female volleyball athletes. METHODS Twenty-four female volleyball athletes were exposed to two pelvic padding scenarios (with and without padding) and two KT conditions (with and without KT applied on the rectus abdominis muscle) during a fall in the forward direction. The maximum impact force during landing and maximum acceleration of the pelvis were registered using a force platform and an accelerometer, respectively. The maximum lumbar (hyper) extension angle, forward reach distance, and total fall time were measured by video analysis. Pain level was quantified using a visual analog scale. RESULTS The application of pelvic padding (with and without KT) reduced pain when compared to the no padding condition (p < 0.008). Applying KT alone reduced forward reach distance when compared to the 'pelvic padding and KT' condition (p < 0.010). In fact, when both pelvic padding and KT were applied, participants reached further when compared to the 'no pelvic padding and no KT' condition (p < 0.001). No significant main and interaction effects were found in all other outcomes. CONCLUSIONS Volleyball shorts with pelvic pads are recommended for female volleyball athletes to reduce pain in the digging maneuver and may help to increase their forward reach distance. However, KT is not recommended as it reduces the forward reach distance and cannot reduce pain or improve fall kinematics and kinetics.
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Affiliation(s)
| | - Shirley S M Fong
- School of Public Health, The University of Hong Kong, Hong Kong.
| | - Joanne W Y Chung
- Department of Health and Physical Education, Education University of Hong Kong, Tai Po, Hong Kong
| | - Louisa M Y Chung
- Department of Health and Physical Education, Education University of Hong Kong, Tai Po, Hong Kong
| | - Karen P Y Liu
- School of Science and Health (Occupational Therapy), Western Sydney University, Penrith, NSW, Australia
| | - Young-Hyeon Bae
- Rehabilitation Clinical Research Center, Korea Worker's Compensation and Welfare Service, Daegu Hospital, Daegu, Republic of Korea
| | - Ada W W Ma
- Department of Health and Physical Education, Education University of Hong Kong, Tai Po, Hong Kong
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Fong SSM, Chung LMY, Bae YH, Vackova D, Ma AWW, Liu KPY. Neuromuscular Processes in the Control of Posture in Children with Developmental Coordination Disorder: Current Evidence and Future Research Directions. Curr Dev Disord Rep 2018. [DOI: 10.1007/s40474-018-0130-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Cho NMY, Giorgi HP, Liu KPY, Bae YH, Chung LMY, Kaewkaen K, Fong SSM. Proprioception and Flexibility Profiles of Elite Synchronized Swimmers. Percept Mot Skills 2017; 124:1151-1163. [PMID: 28799866 DOI: 10.1177/0031512517724965] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study compared the full-body flexibility and joint proprioception (on land and underwater) of (a) 20 elite female synchronized swimmers (mean age ± standard deviation = 18.5 ± 1.9 years) and (b) 20 college female swim team members with no training in synchronized swimming (control participants; mean age ± standard deviation = 20.6 ± 1.3 years). Flexibility of the trunk and upper and lower limbs was measured using plastic tape and a goniometer, respectively. Joint proprioception (joint position sense) of the upper and lower limbs on land and underwater was measured by an active joint angle repositioning test. Principle outcome measures were passive joint range of motion (flexibility) and active joint repositioning error (proprioception). Multivariate analysis of covariance revealed that, compared with control swimmers, synchronized swimmers had greater passive joint ranges of motion in the spinal and upper and lower limb joints ( p < .05) and fewer active joint repositioning errors in the shoulder, wrist, and ankle on land ( p < .05) and in the hip and ankle underwater ( p < .05). These results help characterize peak synchronized swimmer capabilities, provide valuable reference details for coaches, and may be useful for talent identification and skill development in this sport.
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Affiliation(s)
- Nora M Y Cho
- 1 School of Public Health, University of Hong Kong, Hong Kong, China.,2 Hong Kong Synchronized Swimming Team (National Squad), Hong Kong, China
| | - Hedda P Giorgi
- 1 School of Public Health, University of Hong Kong, Hong Kong, China
| | - Karen P Y Liu
- 3 School of Science and Health (Occupational Therapy), Western Sydney University, Penrith, Australia
| | - Young-Hyeon Bae
- 4 Department of Physical Therapy, CJ Futures Management Institute, Seoul, Republic of Korea
| | - Louisa M Y Chung
- 5 Department of Health and Physical Education, Education University of Hong Kong, Hong Kong, China
| | - Kitchana Kaewkaen
- 6 Department of Physical Therapy, School of Health Science, Mae Fah Luang University, Chiang Rai, Thailand
| | - Shirley S M Fong
- 1 School of Public Health, University of Hong Kong, Hong Kong, China
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Fong SSM, Ng SSM, Cheng YTY, Zhang J, Chung LMY, Chow GCC, Chak YTC, Chan IKY, Macfarlane DJ. Comparison between smartphone pedometer applications and traditional pedometers for improving physical activity and body mass index in community-dwelling older adults. J Phys Ther Sci 2016; 28:1651-6. [PMID: 27313391 PMCID: PMC4905930 DOI: 10.1589/jpts.28.1651] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 02/06/2016] [Indexed: 11/24/2022] Open
Abstract
[Purpose] The effectiveness of a smartphone pedometer application was compared with that
of a traditional pedometer for improving the physical activity and weight status of
community-dwelling older adults. [Subjects and Methods] This study had a nonequivalent
pretest-posttest control group design. Ninety-seven older adults (mean age ± SD, 60.1 ±
5.5 years) joined the smartphone pedometer group and underwent a 2-week walking
intervention based on a smartphone pedometer application. Fifty-four older adults (mean
age ± SD, 65.3 ± 8.7 years) joined the traditional pedometer group and underwent a 2-week
walking intervention based on a traditional pedometer. The participants’ physical activity
was evaluated using the International Physical Activity Questionnaire–Short Form, and
their weight status was quantified by calculating the body mass index. The daily pedometer
count was also documented. [Results] No significant time, group, or time-by-group
interaction effects were found for any of the outcome variables. However, trends of
improvement in physical activity and body mass index were seen only in the smartphone
pedometer group. [Conclusion] A smartphone pedometer application might be more favorable
than a traditional pedometer in improving physical activity and body mass index in
community-dwelling older adults. However, further experimental studies are necessary to
confirm the results.
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Affiliation(s)
- Shirley S M Fong
- Institute of Human Performance, The University of Hong Kong, Hong Kong
| | - Shamay S M Ng
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong
| | - Yoyo T Y Cheng
- Institute of Human Performance, The University of Hong Kong, Hong Kong
| | - Joni Zhang
- Institute of Human Performance, The University of Hong Kong, Hong Kong
| | - Louisa M Y Chung
- Department of Health and Physical Education, The Hong Kong Institute of Education, Hong Kong
| | - Gary C C Chow
- Institute of Human Performance, The University of Hong Kong, Hong Kong; Faculty of Liberal Arts and Social Sciences, The Hong Kong Institute of Education, Hong Kong
| | - Yvonne T C Chak
- Elderly Core Business, Hong Kong Christian Service, Hong Kong
| | - Ivy K Y Chan
- Bliss District Elderly Community Centre, Active Ageing Service, Hong Kong Christian Service, Hong Kong
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Fong SSM, Guo X, Cheng YTY, Liu KPY, Tsang WWN, Yam TTT, Chung LMY, Macfarlane DJ. A Novel Balance Training Program for Children With Developmental Coordination Disorder: A Randomized Controlled Trial. Medicine (Baltimore) 2016; 95:e3492. [PMID: 27100457 PMCID: PMC4845861 DOI: 10.1097/md.0000000000003492] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
UNLABELLED This study aimed to compare the effectiveness of a specific functional movement-power training (FMPT) program, a functional movement training (FMT) program and no training in the improvement of balance strategies, and neuromuscular performance in children with developmental coordination disorder (DCD). It was a randomized, single-blinded, parallel group controlled trial. METHODS 161 children with DCD (age: 6-10 years) were randomly assigned to the FMPT, FMT, or control groups. The 2 intervention groups received FMPT or FMT twice a week for 3 months. Measurements were taken before, after, and 3 months after the end of the intervention period. The primary outcomes were the composite score and strategy scores on the sensory organization test as measured by a computerized dynamic posturography machine. Secondary outcomes included the knee muscle peak force and the time taken to reach the peak force. The balance strategies adopted in sensory challenging environments of the FMPT participants showed greater improvement from baseline to posttest than those of the FMT participants (7.10 points; 95% confidence interval, 1.51-12.69; P = 0.008) and the control participants (7.59 points; 95% confidence interval, 1.81-13.38; P = 0.005). The FMPT participants also exhibited greater improvement from baseline to the posttest in the knee extensor peak force and time to peak force in the knee flexors. The FMPT program was more effective than the conventional FMT program in the enhancement of balance strategies and neuromuscular performance in children with DCD.
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Affiliation(s)
- Shirley S M Fong
- From the Institute of Human Performance, The University of Hong Kong, Pokfulam, Hong Kong (SF, YC, TY, DM); Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Hong Kong (XG, WT); School of Science and Health (Occupational Therapy), University of Western Sydney, NSW, Australia (KL); and Department of Health and Physical Education, The Hong Kong Institute of Education, Tai Po, Hong Kong (LC)
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Chow GCC, Fong SSM, Chung JWY, Chung LMY, Ma AWW, Macfarlane DJ. Determinants of sport-specific postural control strategy and balance performance of amateur rugby players. J Sci Med Sport 2016; 19:946-950. [PMID: 26996944 DOI: 10.1016/j.jsams.2016.02.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 01/25/2016] [Accepted: 02/09/2016] [Indexed: 10/22/2022]
Abstract
OBJECTIVES Postural control strategy and balance performance of rugby players are important yet under-examined issues. This study aimed to examine the differences in balance strategy and balance performance between amateur rugby players and non-players, and to explore training- and injury-related factors that may affect rugby players' balance outcomes. DESIGN Cross-sectional and exploratory study. METHODS Forty-five amateur rugby players and 41 healthy active individuals participated in the study. Balance performance and balance strategies were assessed using the sensory organization test (SOT) of the Smart Equitest computerized dynamic posturography machine. Rugby training history and injury history were solicited from the participants. RESULTS The SOT strategy scores were 1.99-54.90% lower in the rugby group than in the control group (p<0.05), and the equilibrium scores were 1.06-14.29% lower in the rugby group than in the control group (p<0.05). After accounting for age, sex and body mass index, only length of rugby training (in years) was independently associated with the SOT condition 6 strategy score, explaining 15.7% of its variance (p=0.006). There was no association between SOT condition 6 strategy/equilibrium scores and injury history among the rugby players (p>0.05). CONCLUSIONS Amateur rugby players demonstrated inferior balance strategy and balance performance compared to their non-training counterparts. Their suboptimal balance strategy was associated with insufficient training experience but not with history of injury.
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Affiliation(s)
- Gary C C Chow
- Institute of Human Performance, The University of Hong Kong, Hong Kong; Faculty of Liberal Arts and Social Sciences, The Hong Kong Institute of Education, Hong Kong
| | - Shirley S M Fong
- Institute of Human Performance, The University of Hong Kong, Hong Kong.
| | - Joanne W Y Chung
- Department of Health and Physical Education, The Hong Kong Institute of Education, Hong Kong
| | - Louisa M Y Chung
- Department of Health and Physical Education, The Hong Kong Institute of Education, Hong Kong
| | - Ada W W Ma
- Department of Health and Physical Education, The Hong Kong Institute of Education, Hong Kong
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Fong SSM, Ng SSM, Chung LMY, Ki WY, Chow LPY, Macfarlane DJ. Direction-specific impairment of stability limits and falls in children with developmental coordination disorder: Implications for rehabilitation. Gait Posture 2016; 43:60-4. [PMID: 26669953 DOI: 10.1016/j.gaitpost.2015.10.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 09/03/2015] [Accepted: 10/29/2015] [Indexed: 02/02/2023]
Abstract
Limit of stability (LOS) is an important yet under-examined postural control ability in children with developmental coordination disorder (DCD). This study aimed to (1) compare the LOS and fall frequencies of children with and without DCD, and (2) explore the relationships between LOS parameters and falls in the DCD population. Thirty primary school-aged children with DCD and twenty age- and sex-matched typically-developing children participated in the study. Postural control ability, specifically LOS in standing, was evaluated using the LOS test. Reaction time, movement velocity, maximum excursion, end point excursion, and directional control were then calculated. Self-reported fall incidents in the previous week were also documented. Multivariate analysis of variance results revealed that children with DCD had shorter LOS maximum excursion in the backward direction compared to the control group (p=0.003). This was associated with a higher number of falls in daily life (rho=-0.556, p=0.001). No significant between-groups differences were found in other LOS-derived outcomes (p>0.05). Children with DCD had direction-specific postural control impairment, specifically, diminished LOS in the backward direction. This is related to their falls in daily life. Therefore, improving LOS should be factored into rehabilitation treatment for children with DCD.
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Affiliation(s)
- Shirley S M Fong
- Institute of Human Performance, The University of Hong Kong, Pokfulam, Hong Kong.
| | - Shamay S M Ng
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
| | - Louisa M Y Chung
- Department of Health and Physical Education, Hong Kong Institute of Education, Tai Po, Hong Kong, China
| | - W Y Ki
- Health, Physical Education and Recreation Department, Emporia State University, USA
| | - Lina P Y Chow
- Department of Health and Physical Education, Hong Kong Institute of Education, Tai Po, Hong Kong, China
| | - Duncan J Macfarlane
- Institute of Human Performance, The University of Hong Kong, Pokfulam, Hong Kong
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Fong SSM, Wong JYH, Chung LMY, Yam TTT, Chung JWY, Lee YM, Chow LPY, Luk WS, Ng SSM. Changes in heart-rate variability of survivors of nasopharyngeal cancer during Tai Chi Qigong practice. J Phys Ther Sci 2015; 27:1577-9. [PMID: 26157266 PMCID: PMC4483444 DOI: 10.1589/jpts.27.1577] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 01/31/2015] [Indexed: 01/08/2023] Open
Abstract
[Purpose] To explore the changes in heart-rate variability (HRV) of survivors of nasopharyngeal cancer (NPC) before, during, and after a Tai Chi (TC) Qigong exercise. [Subjects and Methods] Eleven survivors of NPC participated voluntarily in the study. The heart rate of each participant was measured continuously for 1 minute before the TC Qigong intervention, during the 5-minute TC Qigong intervention, and for 1 minute after the intervention, using a Polar heart-rate monitor. Spectral HRV was expressed in terms of normalised low frequency (LF) power, normalised high frequency (HF) power, and the low frequency/high frequency (LF/HF) power ratio. [Results] Both the LF-power and the HF-power components had significant time effects. However, the time effect of the LF/HF power ratio was not significant. Post hoc contrast analysis revealed a significant decrease in LF power and a concomitant increase in HF power during the 4th minute and 5th minute of the TC Qigong exercise. [Conclusion] Five minutes of TC Qigong exercise was found to improve HRV by increasing HF power and decreasing LF power, but these effects were transient. TC Qigong might be an appropriate exercise for improving the ANS function and psychological and cardiac health of survivors of NPC.
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Affiliation(s)
- Shirley S M Fong
- Institute of Human Performance, The University of Hong Kong: Pokfulam, Hong Kong
| | - Janet Y H Wong
- School of Nursing, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Louisa M Y Chung
- Department of Health and Physical Education, Hong Kong Institute of Education, Hong Kong
| | - Timothy T T Yam
- Department of Physiotherapy, David Trench Rehabilitation Centre, Hong Kong
| | - Joanne W Y Chung
- Department of Health and Physical Education, Hong Kong Institute of Education, Hong Kong
| | | | - Lina P Y Chow
- Department of Health and Physical Education, Hong Kong Institute of Education, Hong Kong
| | - W S Luk
- The Association of Licentiates of the Medical Council of Hong Kong, Hong Kong
| | - Shamay S M Ng
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong
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Chung LMY, Law QPS, Fong SSM, Chung JWY, Yuen PP. A cost-effectiveness analysis of teledietetics in short-, intermediate-, and long-term weight reduction. J Telemed Telecare 2015; 21:268-75. [DOI: 10.1177/1357633x15572200] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/25/2014] [Indexed: 01/07/2023]
Abstract
Introduction To evaluate the effectiveness of teledietetics in weight loss for 24 weeks and the cost-effectiveness of weight loss between face-to-face and teledietetics services. Methods The study was conducted at a community health center and a community dietetics clinic. The study was a quasiexperimental design. Fifty adults aged 20–50 with a BMI ≥23 participated in the study. The face-to-face (FD) group received 12 dietary counselling sessions and recorded their diet in a log book. The teledietetics (TD) group attended three group nutrition seminars and recorded their diet on a Web-based platform. Changes in variables were compared using an independent t-test. Direct and indirect costs were applied to compute cost-effectiveness ratios. Results At week 6, the FD group showed greater reductions in all variables than did the TD group. At week 12, the effects reversed. At week 24, the accumulated reductions in weight and fat in the TD group were significantly higher than those in the FD group (all at p < 0.0001). The observed direct costs for 1% weight loss and 1% fat loss were USD 28.24 and USD17.09, respectively. Discussion A dietetic service delivered as a teledietetics model is more cost-effective than the face-to-face dietetics model in weight reduction.
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Affiliation(s)
- LMY Chung
- Department of Health and Physical Education, The Hong Kong Institute of Education, New Territories, Hong Kong
| | - QPS Law
- Department of Nursing and Health Sciences Tung Wah College, Hong Kong
| | - SSM Fong
- Institute of Human Performance, The University of Hong Kong, Pokfulam, Hong Kong
| | - JWY Chung
- Department of Health and Physical Education, The Hong Kong Institute of Education, New Territories, Hong Kong
| | - PP Yuen
- College of Professional & Continuing Education The Hong Kong Polytechnic University, Hong Kong
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Fong SSM, Ng SSM, Chung LMY. Health through martial arts training: Physical fitness and reaction time in adolescent Taekwondo practitioners. Health (London) 2013. [DOI: 10.4236/health.2013.56a3001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
AIMS To compare the physical fitness levels of Hong Kong and mainland Chinese school children and to study the association between any differences and their respective lifestyles. BACKGROUND Genes and lifestyle are both factors contributing to health. Hong Kong is a Chinese city with distinctive lifestyle features such as a different diet and different entertainment and education from the rest of China. Using samples of the same ethnicity and investigating differences in the physical fitness parameters between Hong Kong and mainland Chinese school children might reveal the impact of some lifestyle factors on health. DESIGN Survey. METHOD Primary school children (n = 522) were recruited. Demographic data were collected by questionnaire. Physical fitness tests were carried out. RESULTS Significant differences were found in height, body weight, sit and reach, long jump, running 50 m and lung capacity. Hong Kong children were found to be taller and heavier at ages 6 and 7, but heavier with similar height to that of mainland children at ages 8-12. Other results showed better physical fitness on the part of mainland children. DISCUSSION; Although the people of Hong Kong share the same ethnicity as the majority of mainland Chinese, the eastern-mixed-with-western diet, education and entertainment of Hong Kong children differ greatly. The findings in terms of physical fitness revealed variations in body build, flexibility, cardiovascular function and muscle power between the two groups. CONCLUSION Lifestyle could possibly be a key factor and predictor of physical fitness, providing strong evidence to support the interaction between lifestyle and genes in their impact on our health. RELEVANCE TO CLINICAL PRACTICE Lifestyle could possibly be a key factor and predictor of physical fitness and health outcomes. The finding of this study may enhance the identification of healthy lifestyle which may improve health outcomes in children.
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Affiliation(s)
- Joanne W Y Chung
- Centre for Integrative Digital Health, School of Nursing, The Hong Kong Polytechnic University, Hong Kong.
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Abstract
AIMS (i) To provide a profile of the clients who have used the Integrative Health Clinic's services, (ii) to determine the clients' extent of satisfaction with the services received and (iii) to assess whether integrative therapies can/should be recommended to other clinics. BACKGROUND Based on the integration of various health paradigms and the use of health promotion strategies, our Integrative Health Clinic in Hong Kong provides a range of different therapies for integrated symptom management. The integrative therapies are derived from conventional, complementary and alternative medicine. Design. Postal survey, followed by routine data analysis. METHOD Hong Kong Chinese clients attending a residential community health clinic were surveyed about health status and satisfaction towards the services received. RESULTS A total of 489 clients (30.8% were male and 69.2% female) were registered with the clinic during the study period. The mean age (SD) was 47.8 (15.4) years. The customer satisfaction survey found that traditional Chinese medicine consultation was the most frequently used modality of the Integrative Health Clinic, followed by pain management. Out of the 489 clients, those who attended the Integrative Health Clinic only once in the study period for an annual health assessment and those who died during the period were excluded from the survey, giving a total of 276 eligible clients. Out of the 276 clients, 52.5% (128) responded to the survey that asked them to evaluate their satisfaction with the services received at the clinic and the performance of the clinic's practitioners who interacted with them. For practitioner performance, the percentage of respondents who gave a rating of satisfaction was found to range between 86.3-64.3%, while the percentage of respondents who gave a rating of dissatisfaction ranged from 13.7-35.7%. Overall, the survey found that most aspects of the Integrative Health Clinic's services were rated as satisfactory. CONCLUSION The overwhelming satisfaction of clients with the services they received at the Integrative Health Clinic suggests that this integrative health services model could be considered for adoption in other clinics in Hong Kong and perhaps the region. RELEVANCE TO CLINICAL PRACTICE It is necessary to review the use of integrative therapies so as to provide more data for the evaluation of this increasingly popular modality of health services.
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Affiliation(s)
- Joanne W Y Chung
- School of Nursing, The Hong Kong Polytechnic University, Hong Kong.
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