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Fulltext Comparing periodised protocols for the maintenance of strength and power in resistance-trained women

Kok, Lian Yee

Movement Health & Exercise, 2017;6(2):171-183.
MyJurnal

Purpose: The purpose of the study was to compare the effects of daily
undulating periodisation (DUP) and session undulating periodisation (SUP)
for maintaining strength and power over a 3-wk period in a group of
resistance-trained women. DUP comprised one session each of strength and
power training while DUP combined both strength and power training within
each session. Both training programmes were equalised for training volume
and intensity. Methods: Sixteen resistance-trained women were pre-tested
for body mass, mid-arm and mid-thigh girths, one-repetition maximum (1
RM) dynamic squat (SQ) and bench press (BP), and power during
countermovement jumps (CMJ) and bench press throws (BPT). The 1 RM
SQ and BP data were used to assign the participants into groups for twice a
week training. Results: A two-way (group x time) analysis of variance
(ANOVA) with repeated measures for time found no significant changes in
body mass, mid-arm girth, 1 RM BP and SQ, and BPT and CMJ power for
both groups. However, significant changes in mid-thigh girth were found (F1,
13 = 5.733, p = 0.032). Pooled BP data indicated improved upper body
strength (BP: F1, 13 = 6.346, p = 0.025) and decreased CMJ power (p = 0.016).
Conclusions: Both DUP and SUP programmes increased upper-body
strength and maintained lower-body strength adequately across a 3-wk phase
probably because the participants were weaker in the upper-body and the
lower-body had a reduced capacity for strength adaptations and
improvements.
Movement pattern recognition ability of Malaysian rhythmic gymnastics judges

Kok, Lian Yee, Teh, Lah Hoong

Movement Health & Exercise, 2013;2(1):15-30.
MyJurnal

This study examined the significance of movement pattern recognition ability in the judging performance of 30 rhythmic gymnastics judges who were classified correspondingly as expert, non-expert and novice. Results indicated that the expert and non-expert participants were superior to the novice participants in their movement pattern recognition ability and their judging performance but there were no differences between the expert and non-expert participants. When the participants were regrouped according to their movement pattern recognition ability; low, average and high, the results showed that there were very significant differences in the judging performances of the three groups classified according to their movement pattern recognition ability. This suggests that movement pattern recognition ability influences the judging performance of a rhythmic gymnastics judge.
Fulltext Effect of small-sided games rule changes on time spent in different intensity zones, frequency of technical actions and distance covered during soccer training

Muhammad Taufiq Cheng Abdullah, Kok, Lian-Yee, Chee, Chen-Soon

Movement Health & Exercise, 2020;9(2):71-84.
MyJurnal

Purpose: The efficacy of SSGs has been difficult to assess as researchers have used a wide-ranging number of players, pitch dimensions and game rules, making comparisons complicated. Therefore, this study compared four SSG rules [one (SSG1T), two (SSG2T), three (SSG3T), and unlimited touches (SSGFT)] on time spent in different heart-rate (HR) intensity zones, frequency of technical actions and distance covered involving the starting 11 players and the reserve goalkeeper of a national soccer league team. Methods: The participants (age: 24.3±4.0 yr; height: 171.2±5.9 cm: weight: 61.9±7.4 kg) were measured for previously mentioned dependent variables during each SSG format. Results: Analysis found no significant difference among the four SSGs formats [F(3, 27) = 2.897, p = .053] for time spent in the low-intensity zone, but significant differences were observed for time spent in moderate [F(3, 27) = 13.642, p = .001] and high [F(3, 27) = 13.431, p = .001] intensity zones. Significantly more time was spent in the high intensity zone [F(3, 27) = 13.431, p = .001] when players performed SSG2T and SSGFT when compared SSG1T (p = .002 and p = .009) respectively. SSG1T induced most unsuccessful passing [F(3,27) = 500.498, p = .001] but no differences was observed among SSG2T, SSG3T and SSGFT. SSG2T, SSG3T and SSG3T obtained significantly more shots on goal shots on goal [F(3,27) = 25.398, p = .001], with SSGFT achieving higher numbers than the other three formats. There were no significant differences in goals scored (p = .537) and distance covered (p = 0.574) for all SSG formats. Conclusion: The main findings of this study revealed that all four SSG formats stimulated moderate to high heart rate intensities that could induce positive aerobic and anaerobic adaptations depending on frequency of technical actions and players’ skill level. Therefore, coaches could select specific SSG formats to help players achieved intended intensity and technical objectives programmed for different phases of periodized training.
Fulltext The Reactive Bounding Coefficient as a Measure of Horizontal Reactive Strength to Evaluate Stretch-Shortening Cycle Performance in Sprinters

Washif JA, Kok LY

J Hum Kinet, 2020 Jul;73:45-55.
PMID: 32774536 DOI: 10.2478/hukin-2020-0003

Plyometric exercises such as drop jumping and bounding offer athletes a substantiated means of enhancing athletic performance. Between the two exercises, reactive measurement using bounding (reactive bounding coefficient [RBC]) has received scant attention within the domain of training and conditioning. Therefore, this study aimed to identify the viability of utilising a speed-bounding exercise to assess horizontal reactive strength. Eleven young, male elite sprinters (age: 17.8 ± 1.3 yr; body height: 1.72 ± 0.06 m; body mass: 66.05 ± 6.10 kg; best 100 m sprint time: 10.77 ± 0.32 s) were tested for static jumps (SJ), drop jumps (DJ), 10 speed-bounding (RBC10), and 50 m sprint performance. Between-group comparisons based on sprint ability (fast [FSG] vs. slow [SSG] sprint-group) and correlation coefficients were computed subsequently. The FSG (n = 5; 50 m time: 5.82 ± 0.11 s; RBC10: 7.46 ± 0.27) performed significantly better in the RBC10 (p = 0.036) than the SSG (n = 5; 50 m time: 6.09 ± 0.13 s; RBC10: 7.09 ± 0.25). A very high correlation was attained between the RBC10 and the criterion measure, the SJ (r = 0.83). Additionally, RBC10 appeared to be correlated with 30, 50, 10-30 and 30-50 m sprint times (r = -0.52 to -0.60). This positive trend, however, was not observed for the DJ reactive strength index (trivial to moderate correlations). Good reliability was shown for the RBC10 and all sprint distances ("1.5% coefficient variation). Furthermore, all sprinters attained ground contact times of 0.12-0.18 s during the RBC10 which was indicative of fast stretch-shortening cycles during movement, suggesting that the RBC10 could be utilised to assess plyometric ability and enhance sprint performance. Overall, the RBC10 seems able to discriminate between the FSG and the SSG, indicating it has acceptable levels of validity and reliability.
Fulltext Effect of single-session aerobic exercise with varying intensities on lipid peroxidation and muscle-damage markers in sedentary males

Moflehi D, Kok LY, Tengku-Kamalden TF, Amri S

Glob J Health Sci, 2012 Jul;4(4):48-54.
PMID: 22980341 DOI: 10.5539/gjhs.v4n4p48

This study was conducted to evaluate the effect of the different intensity levels of single-session aerobic exercise on serum levels of lipid peroxidation and muscle damage markers in sedentary males.
Using stochastic resonance and strength training as part of a rehabilitation programme for recurrent low back pain treatment: a case study

Washif JA, Teichmann J, Kok LY, Schmidtbleicher D

J Exerc Rehabil, 2019 Feb;15(1):139-147.
PMID: 30899750 DOI: 10.12965/jer.1836532.266

Low back pain (LBP) is a common disabling health problem that can cause decreased spine proprioception. Stochastic resonance (SR) can influence detection performance, besides improving patients with significant sensory deficits, but have not been thoroughly tested for LBP. This study aimed to examine the application of SR therapy (SRT) and strength training for LBP treatment. The subject was a resistance-trained male in his early thirties. His back pain was unbearable after a strength training session. Standard pain relief alleviated the pain but the LBP developed at a similar intensity after 4 weeks. SRT (4-5 sets ×90 sec, 30-sec rest interval, supine position) was prescribed along with other exercises for 3 weeks (phase 1), and followed by tailor-made strength training for 16 weeks (phase 2). The Oswestry Disability Index was 66.7% (interpreted as "crippled") prior to first SRT, and reduced to minimal levels of 15.6% and 6.7% after four and seven SRT sessions, respectively. Similarly, pain intensity was ranging from 5 to 9 (distracting-severe) of the Numeric Rating Scale (NRS-11) prior to the first session but this was reduced considerably after four sessions (NRS-11: 0-1). During phase 2, the patient performed without complaining of LBP, two repetitions of bench press exercise at a load intensity of 1.2 his body weight and attained 4 min of plank stabilisation. This LBP management strategy has a clinically meaningful effect on pain intensity, disability, and functional mobility, by receding the recurrent distracting to severe LBP.
Fulltext Athlete level, sport-type, and gender influences on training, mental health, and sleep during the early COVID-19 lockdown in Malaysia

Washif JA, Kok LY, James C, Beaven CM, Farooq A, Pyne DB, et al.

Front Physiol, 2022;13:1093965.
PMID: 36714309 DOI: 10.3389/fphys.2022.1093965

Purpose: We evaluated the extent of changes in training practices, recovery, mental health, and sleep patterns of athletes during the early COVID-19 lockdown in a single country-cohort. Methods: A total of 686 athletes (59% male, 41% female; 9% World Class, 28% International, 29% National, 26% State, 8% Recreational) from 50 sports (45% individual, 55% team) in Malaysia completed an online, survey-based questionnaire study. The questions were related to training practices (including recovery and injury), mental health, and sleep patterns. Results: Relative to pre-lockdown, training intensity (-34%), frequency (-20%, except World-Class), and duration (-24%-59%, especially International/World-Class) were compromised, by the mandated lockdown. During the lockdown, more space/access (69%) and equipment (69%) were available for cardiorespiratory training, than technical and strength; and these resources favoured World-Class athletes. Most athletes trained for general strength/health (88%) and muscular endurance (71%); and some used innovative/digital training tools (World-Class 48% vs. lower classification-levels ≤34%). More World-Class, International, and National athletes performed strength training, plyometrics, and sport-specific technical skills with proper equipment, than State/Recreational athletes. More females (42%) sourced training materials from social media than males (29%). Some athletes (38%) performed injury prevention exercises; 18% had mild injuries (knees 29%, ankles 26%), and 18% received a medical diagnosis (International 31%). Lower-level athletes (e.g., State 44%) disclosed that they were mentally more vulnerable; and felt more anxious (36% vs. higher-levels 14%-21%). Sleep quality and quantity were "normal" (49% for both), "improved" (35% and 27%), and only 16% and 14% (respectively) stated "worsened" sleep. Conclusion: Lockdown compromised training-related practices, especially in lower-level athletes. Athletes are in need of assistance with training, and tools to cope with anxiety that should be tailored to individual country requirements during lockdown situations. In particular, goal-driven (even if it is at home) fitness training, psychological, financial, and lifestyle support can be provided to reduce the difficulties associated with lockdowns. Policies and guidelines that facilitate athletes (of all levels) to train regularly during the lockdown should be developed.
Fulltext Training During the COVID-19 Lockdown: Knowledge, Beliefs, and Practices of 12,526 Athletes from 142 Countries and Six Continents

Washif JA, Farooq A, Krug I, Pyne DB, Verhagen E, Taylor L, et al.

Sports Med, 2022 04;52(4):933-948.
PMID: 34687439 DOI: 10.1007/s40279-021-01573-z

OBJECTIVE: Our objective was to explore the training-related knowledge, beliefs, and practices of athletes and the influence of lockdowns in response to the coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).
METHODS: Athletes (n = 12,526, comprising 13% world class, 21% international, 36% national, 24% state, and 6% recreational) completed an online survey that was available from 17 May to 5 July 2020 and explored their training behaviors (training knowledge, beliefs/attitudes, and practices), including specific questions on their training intensity, frequency, and session duration before and during lockdown (March-June 2020).
RESULTS: Overall, 85% of athletes wanted to "maintain training," and 79% disagreed with the statement that it is "okay to not train during lockdown," with a greater prevalence for both in higher-level athletes. In total, 60% of athletes considered "coaching by correspondence (remote coaching)" to be sufficient (highest amongst world-class athletes). During lockdown,
Fulltext Correction to: Training During the COVID-19 Lockdown: Knowledge, Beliefs, and Practices of 12,526 Athletes from 142 Countries and Six Continents

Washif JA, Farooq A, Krug I, Pyne DB, Verhagen E, Taylor L, et al.

Sports Med, 2022 Oct 22.
PMID: 36272061 DOI: 10.1007/s40279-022-01776-y