scholarly journals A Comparative Study of Two-Minute versus Three-Minute Passive Recovery on Sprint Skating Performance of Ice Hockey Forwards and Defensemen

2021 ◽  
Vol 18 (24) ◽  
pp. 13029
Author(s):  
Arkadiusz Stanula ◽  
Subir Gupta ◽  
Jakub Baron ◽  
Anna Bieniec ◽  
Rajmund Tomik ◽  
...  
Keyword(s):  
Heart Rate ◽  
Comparative Study ◽  
Recovery Period ◽  
Ice Hockey ◽  
Passive Recovery ◽  
Repeated Sprint ◽  
The Difference ◽  
The Impact

The impact of two different passive recovery durations, two and three minutes, between sets of repeated sprint skating ability (RSSA) test on skating speed, speed decrement (Sdec), and heart rate (HR) response of ice hockey forwards (n = 12) and defensemen (n = 7) were determined. Six sets of 3 × 80 m sprint, with two-minute passive recovery between two consecutive sets, were performed in RSSA-2. A three-minute passive recovery period between two consecutive sets was allowed in RSSA-3. Skating speed, Sdec, and HR were measured in all tests. Subjects skated faster (p < 0.05) in most of the RSSA-3 sets than the corresponding set of RSSA-2. Defensemen were slower (p < 0.05) than forwards in most of the cases. The Sdec was higher in defensemen than in forwards, although the difference was significant occasionally. No difference in peak HR and minimum HR between forwards and defensemen was found. RSSA-3 is beneficial over RSSA-2 in both forwards and defensemen by increasing speed. Defensemen are slower and show early fatigability than forwards, and no difference in HR response was noted between forwards and defensemen. This study concludes that three-minute recovery is beneficial over two-minute recovery by increasing skating speed, although Sdec and HR response neither vary significantly between RSSA-2 and RSSA-3, nor between forwards and defensemen.

scholarly journals Effect of Rest Period Duration between Sets of Repeated Sprint Skating Ability Test on the Skating Ability of Ice Hockey Players

2021 ◽  
Vol 18 (20) ◽  
pp. 10591
Author(s):  
Jakub Baron ◽  
Subir Gupta ◽  
Anna Bieniec ◽  
Grzegorz Klich ◽  
Tomasz Gabrys ◽  
...  
Keyword(s):  
Heart Rate ◽  
Perceived Exertion ◽  
Recovery Period ◽  
Lactate Concentration ◽  
Rest Period ◽  
Ice Hockey ◽  
Ability Test ◽  
Average Speed ◽  
Repeated Sprint ◽  
Hockey Players

The aim of this study was to determine the effects of two different rest periods, 2 min and 3 min, between consecutive sets of a repeated sprint skating ability (RSSA) test, on the skating ability of ice hockey players. Two RSSA tests, RSSA-2 and RSSA-3, were assessed on 24 ice hockey players. In RSSA-2, six sets of 3 × 80 m sprint skating, with 2 min passive recovery between two consecutive sets was allowed. In RSSA-3, the recovery period between the sets was 3 min. Average speed, average heart rate (HRaver), peak heart rate (HRpeak), blood lactate concentration ([BLa]), and rate of perceived exertion (RPE) were measured in both RSSA-2 and RSSA-3 tests. In all the sets, except set 1, the average speed of the subjects was significantly (p < 0.05) higher in RSSA-3 than the respective set in RSSA-2. Average HR and RPE were higher in RSSA-2 than RSSA-3 in most of the sets. For any given set, no difference in HRpeak was noted between RSSA-2 and RSSA-3. Post-sprint (Set 6) [BLa] was significantly (p < 0.05) higher in RSSA-3 than RSSA-2. This study concludes that the 3 min rest period is more beneficial than the 2 min rest period, for (1) increasing skating speed and (2) reducing overall cardiac workload and perceived fatigue.

scholarly journals Repeated Sprint Ability in Elite Basketball Players: The Effects of 10 × 30 m Vs. 20 × 15 m Exercise Protocols on Physiological Variables and Sprint Performance

2021 ◽  
Vol 77 (1) ◽  
pp. 181-189
Author(s):  
Bruno Figueira ◽  
Bruno Gonçalves ◽  
Eduardo Abade ◽  
Rūtenis Paulauskas ◽  
Nerijus Masiulis ◽  
...  
Keyword(s):  
Heart Rate ◽  
High Intensity ◽  
Exercise Heart Rate ◽  
Basketball Players ◽  
Small Magnitude ◽  
Physiological Variables ◽  
Repeated Sprint Ability ◽  
Repeated Sprint ◽  
The Impact ◽  
Sprint Ability

Abstract Team sports players are required to perform repeated bouts of short-term high-intensity actions during the games. The present study aimed to examine the effects of a novel repeated sprint ability protocol (20×15 m) and compare it with the impact of a more traditional repeated sprint ability protocol (10×30 m). Twelve male elite Lithuanian basketball players (age 21.0 ± 2.0 y, body height 1.90 ± 0,07 m, body mass 86.2 ± 5.8 kg and training experience 12.0 ± 1.9 y) competing in the Lithuanian National Basketball Championship participated in this study. Participants completed three bouts of each repeated sprint protocol interspersed with 5 minutes of recovery. Results showed that the 20×15 m protocol caused a significant decrease in total sprint time (most likely; mean changes (%) with ± 90% of confidence limits, -9.4%; ± 0.7%) and a large decrease in blood lactate (most likely, -39.2%; ±12.8%) compared to the 10×30 m protocol. Despite small differences, the fatigue index presented a similar trend (possibly decrease, -23.7%; ± 38.8%). The exercise heart rate showed a very similar trend with trivial differences between the two protocols. The 20×15 m protocol presented a lower heart rate during recovery with small magnitude. Overall, the present study showed that the 20×15 m protocol seemed to be more representative of the specific basketball demands. Coaches should be aware that RSA training during the in-season may be an adequate stimulus to improve high-intensity runs and muscle power in high-level players.

scholarly journals Evaluation of Cardiac Circadian Rhythm Deconditioning Induced by 5-to-60 Days of Head-Down Bed Rest

2021 ◽  
Vol 11 ◽  
Author(s):  
Sarah Solbiati ◽  
Alba Martin-Yebra ◽  
Pierre Vaïda ◽  
Enrico G. Caiani
Keyword(s):  
Circadian Rhythms ◽  
Recovery Period ◽  
Oscillation Amplitude ◽  
Bed Rest ◽  
Heart Beat ◽  
Night Time ◽  
Mission Success ◽  
The Difference ◽  
Orthostatic Position ◽  
The Impact

Head-down tilt (HDT) bed rest elicits changes in cardiac circadian rhythms, generating possible adverse health outcomes such as increased arrhythmic risk. Our aim was to study the impact of HDT duration on the circadian rhythms of heart beat (RR) and ventricular repolarization (QTend) duration intervals from 24-h Holter ECG recordings acquired in 63 subjects during six different HDT bed rest campaigns of different duration (two 5-day, two 21-day, and two 60-day). Circadian rhythms of RR and QTend intervals series were evaluated by Cosinor analysis, resulting in a value of midline (MESOR), oscillation amplitude (OA) and acrophase (φ). In addition, the QTc (with Bazett correction) was computed, and day-time, night-time, maximum and minimum RR, QTend and QTc intervals were calculated. Statistical analysis was conducted, comparing: (1) the effects at 5 (HDT5), 21 (HDT21) and 58 (HDT58) days of HDT with baseline (PRE); (2) trends in recovery period at post-HDT epochs (R) in 5-day, 21-day, and 60-day HDT separately vs. PRE; (3) differences at R + 0 due to bed rest duration; (4) changes between the last HDT acquisition and the respective R + 0 in 5-day, 21-day, and 60-day HDT. During HDT, major changes were observed at HDT5, with increased RR and QTend intervals’ MESOR, mostly related to day-time lengthening and increased minima, while the QTc shortened. Afterward, a progressive trend toward baseline values was observed with HDT progression. Additionally, the φ anticipated, and the OA was reduced during HDT, decreasing system’s ability to react to incoming stimuli. Consequently, the restoration of the orthostatic position elicited the shortening of RR and QTend intervals together with QTc prolongation, notwithstanding the period spent in HDT. However, the magnitude of post-HDT changes, as well as the difference between the last HDT day and R + 0, showed a trend to increase with increasing HDT duration, and 5/7 days were not sufficient for recovering after 60-day HDT. Additionally, the φ postponed and the OA significantly increased at R + 0 compared to PRE after 5-day and 60-day HDT, possibly increasing the arrhythmic risk. These results provide evidence that continuous monitoring of astronauts’ circadian rhythms, and further investigations on possible measures for counteracting the observed modifications, will be key for future missions including long periods of weightlessness and gravity transitions, for preserving astronauts’ health and mission success.

scholarly journals Cardiovascular, lactate and appetite response to light and spicy music tempo after an endurance swimming protocol in young girls

2020 ◽  
Vol 24 (4) ◽  
pp. 195-202
Author(s):  
Javad Mehrabani ◽  
Soodabeh Bagherzadeh ◽  
Abuzar Jorbonian ◽  
Eisa Khaleghi-Mamaghani ◽  
Maryam Taghdiri ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Recovery Period ◽  
Young Girls ◽  
Significant Difference ◽  
Before And After ◽  
Lactate Levels ◽  
The Impact

Background and Study Aim. During exercise, the effects of music on the performance have been previously evaluated. However, the superiority of the type of music and during recovery is not yet clear. Therefore the aim of this study was to determine the impact of music with a spicy and light beat on changes in lactate levels, blood pressure, heart rate, and appetite during the recovery period after the endurance swimming. Material and Methods. Thirteen healthy young girls participate in three control and experimental sessions. The participants performed a swimming. Immediately after swimming, they listened to music. Also, evaluations before and after (several times) swimming were performed.Results. Five minutes after swimming there was also a significant difference between the non-sound group with the music groups (p<0.05). Two and 5 minutes after swimming, there was a significant difference between the spicy and light music groups compared to the non-sound group. There was a significant difference between spicy and light music groups at time 10, 15 and 25 minutes. In the 25 minutes after the swim, reducing the heart rate in light music was more than spicy. Also, 10 minutes after swimming, the spicy music group could not cope with the increase in heart rate (p<0.05). There was a significant difference between the two music groups in minutes 5, 10 and 15 after swimming (p<0.05).Conclusions. listening to light music during recovery from endurance swimming was associated with decreased lactate levels and heart rate, but listening to spicy music increased heart rate and desire for food.

scholarly journals The Impact of a 30 vs. 60 Second Passive Recovery Period on Vertical Jump Performance

2017 ◽  
Vol 49 (5S) ◽  
pp. 1067
Author(s):  
Andy Bosak ◽  
Austin Smith ◽  
Christopher Carver ◽  
Matthew Sokoloski ◽  
Jon Houck ◽  
...  
Keyword(s):  
Vertical Jump ◽  
Recovery Period ◽  
Jump Performance ◽  
Passive Recovery ◽  
The Impact

scholarly journals Heart Rate Response and Match Repeated-Sprint Performance in Chinese Elite Youth Soccer Players

2011 ◽  
Vol 17 (2) ◽  
pp. 42-49
Author(s):  
Del P. WONG ◽  
Karim CHAMARI ◽  
Anis CHAOUACHI ◽  
Tze Chung LUK ◽  
Patrick Wing Chung LAU
Keyword(s):  
Heart Rate ◽  
Recovery Period ◽  
Interval Training ◽  
Cardiovascular Fitness ◽  
Sprint Performance ◽  
Soccer Players ◽  
Active Recovery ◽  
Youth Soccer ◽  
Repeated Sprint ◽  
Soccer Teams

LANGUAGE NOTE | Document text in English; abstract also in Chinese. The purpose of this study is to investigate the heart rate (HR) repose and repeated-sprint performance throughout the match among Chinese elite youth soccer players. Two elite youth soccer teams each consisted of 11 players participated in the study. The HR measurement and repeated-sprint test were conducted (age: 17.1±0.85, height: 173± 5.2cm; weight: 64.2± 8.1kg). HR was recorded every 5s throughout the match, while repeated-sprint consisted of three 30m sprints separated by a 25s active recovery period that was conducted: 5min before the match (T1), 5min before the end of the first half (T2), 5min before the start of the second half (T3), and 5min before the end of the second half (T4). HR was in the range of 160-169bpm for 25% of total play time, followed by 170-179bpm for 23.6%. HR during the 46-60min was significantly lower than other intervals (P<0.05), and repeated-sprint time at T3 was significantly slower than others. The intensity of the match was lower than those found in European players, indicating the cardiovascular fitness and repeated-sprint performance are needed among the players. High-intensity and low-volume interval training, and re-warm up before the start of second half are suggested in the training program. 本研究旨在測定中國青年足球運動員比賽時的心率及重覆衝跑測試表現。對兩支分由11人組成的足球隊運動員(年齡17.1±0.85歲，身高：173±5.2釐米，體重; 64.2±8.1公斤)進行了心率測量以及重覆衝跑測試。比賽時每5秒鍾記錄一次心率。重覆衝跑測試由3次30米衝跑組成，每次有25秒動態休息。重覆衝跑測試共進行四次，分別在：賽前5分鐘(T1)，中場前5分鐘(T2)，下半場開始前5分鐘(T3)及比賽結束前5分鐘(T4)進行。結果在25%的比賽時間內，運動員的心率在每分鐘160-169之間，其次是23.6%的時間內為每分鐘170-179。在46-60分鐘的比賽中，運動員的心率顯著低於其他時段(P<0.05),而運動員在第三次重覆衝跑測試時的速度顯著低於其他三次測試。本次研究結果顯示比賽強度低於歐洲青年足球員進行的同類測試，說明中國青年足球運動員需要加強心肺功能及提高重覆衝跑的表現。建議訓練時進行大強度低密度的間歇訓練，及在比賽中場開始前再次進行熱身。

Cooling During Exercise May Induce Benefits Linked to Improved Brain Perfusion

2020 ◽  
Author(s):  
Wafa Douzi ◽  
Benoit Dugué ◽  
Dimitri Theurot ◽  
Ludwig Vinches ◽  
Stéphane Hallé ◽  
...  
Keyword(s):  
Heart Rate ◽  
Skin Temperature ◽  
Cooling System ◽  
Heart Rate Recovery ◽  
Physiological Responses ◽  
Recovery Period ◽  
Subjective Rating ◽  
Brain Level ◽  
The Impact ◽  
The Brain

AbstractThe aim of this study was to evaluate the impact of using a cooling vest during physical exercise (per-cooling) in humid and temperate conditions (≈22°C, ≈80% relative humidity) on perceptual and physiological responses (tissue oxygenation and heart rate). 20 physically active men performed twice a 30-min cycling exercise at 70% of their theoretical maximum heart rate while using an activated (experimental condition) and a deactivated (control condition) cooling system in a randomized crossover study. Heart rate and tissue (cerebral and muscular) oxygenation were continuously measured during exercise and recovery, and skin temperature was measured every 10 min. Perception of temperature, humidity and comfort were assessed at the end of the recovery period. Results showed a decrease in trunk skin temperature (p<0.05), a faster heart rate recovery and an increase in the concentration of total hemoglobin at the brain level (p<0.05) compared with control condition. Moreover, an improved subjective rating of thermal sensations, wetness and comfort compared to control values (p<0.05) was noted. In conclusion, wearing a cooling vest during submaximal exercise improves perceptual and physiological responses in humid temperate conditions, which may be due to a better blood perfusion at the brain level and a better parasympathetic reactivation.

scholarly journals A Comparison of Skating Economy On-Ice and On the Skating Treadmill

2003 ◽  
Vol 28 (1) ◽  
pp. 1-11 ◽  
Author(s):  
K.J. Nobes ◽  
D.L. Montgomery ◽  
D.J. Pearsall ◽  
R.A. Turcotte ◽  
R. Lefebvre ◽  
...  
Keyword(s):  
Heart Rate ◽  
Oxygen Uptake ◽  
Stride Length ◽  
Ice Hockey ◽  
Maximum Speed ◽  
Passive Recovery ◽  
Hockey Players ◽  
Stride Rate ◽  
Volitional Fatigue

The purpose of this study was to compare skating economy and oxygen uptake (VO2) on-ice and on the skating treadmill (TM). Male varsity hockey players (n = 15, age = 21.0 yr) performed skating tests on a TM and on-ice. The subjects skated for 4 min at each of 3 submaximal velocities (18, 20, and 22 km • h−1), separated by 5 min of passive recovery. A VO2max test followed the submaximal tests and commenced at 24 km • h−1 with the velocity increasing by 1 km • hr−1 every minute until volitional fatigue. VO2 was 39.7, 42.9, 46.0, and 53.4 ml • kg−1 • min−1 at 18, 20, 22, and maximum speed (km • hr−1) on the TM. VO2 was significantly lower (p < .05) 31.5, 36.9, and 42.7 ml • kg−1 • min−1 at 18, 20, and 22 km • h−1 on-ice. The on-ice VO2max (54.7 ml • kg−1 • min−1) was similar to TM. Stride rate, stride length and heart rate (HR) were significantly different on-ice compared to TM. These results show that at submaximal velocities, VO2, HR, and stride rate are higher on TM compared to on-ice. VO2max was similar while HRmax was higher on the skating treadmill compared to on-ice. Keywords: VO2, ice hockey, stride kinetics, heart rate

scholarly journals An Analysis of Differences in the Role of Friendships and the School Class in Children’s Perceptions of Bullying in England and Ijime in Japan: A Translation and Expansion of Kanetsuna (2009)

2021 ◽  
Vol 18 (15) ◽  
pp. 8234
Author(s):  
Tomoyuki Kanetsuna ◽  
Peter K. Smith
Keyword(s):  
Secondary School ◽  
Comparative Study ◽  
English Translation ◽  
School Class ◽  
Friendship Formation ◽  
Different Types ◽  
The Difference ◽  
Perceptions Of Bullying ◽  
The Impact

This is an English translation with some expansion of the article originally published in Japanese as a university bulletin in 2009. Previous research has found both differences and similarities between ijime in Japan and bullying in England. Bullying is often by pupils in different classes or higher year groups whom the victim does not know very well; ijime is often by victims’ classmates whom the victim knows very well. However, it has not been shown whether these differences are found for all types of bullying, or how they relate to friendships generally and the impact of differing school systems. We aimed to see whether previously found differences between ijime and bullying could be replicated, and, if so, whether they held for six different types of victimization, and whether friendship characteristics were consistent with explaining why they occur. To investigate the role of friendships and their location, 1036 Japanese and 931 English secondary school pupils participated in a comparative study of perceptions of bullying and ijime. The previous differences were confirmed and found to hold irrespective of type of bullying. Japanese pupils mainly formed friendships on a class basis, English pupils on a broader basis including pupils in different years. In school, English pupils spent much time in the playground with their friends and saw this as a likely venue for bullying, whereas Japanese pupils spent more time in the classroom and saw this as a likely venue for ijime. The difference in friendship formation, together with differences in the organization of class-based teaching in the two countries, are hypothesized to play a significant role in explaining some differences between bullying and ijime.

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