The Effect of High-Intensity Intermittent Training on the Acute Gait Plantar Pressure in Healthy Young Adults

2021 ◽  
Vol 49 ◽  
pp. 21-32
Author(s):  
Xin Yan Jiang ◽  
Shu Dong Li ◽  
Ee Chon Teo ◽  
Zhe Xiao Zhou
Keyword(s):  
Steady State ◽  
Postural Control ◽  
Plantar Pressure ◽  
High Intensity ◽  
Initial Contact ◽  
Maximal Heart Rate ◽  
Acute Effects ◽  
Healthy Male ◽  
Contact Phase ◽  
Intermittent Training

High-intensity intermittent training (HIIT) has been successfully applied in various sports activities, as HIIT was considered as one of the most efficient training methods of exercise for improving physical performance and reducing the weight of overweight individuals. However, its acute effects of HIIT on gait and balance performance were not addressed. Thus, in this study we examined the acute effects of HIIT on dynamic postural control compared with steady-state training (SST) by analyzing plantar pressure parameters. In this study, sixteen healthy male adults were examined in 3 days. After exhaustive ramp-like cycle ergometer testing, the maximal heart rate (HRmax) of each participant was determined on the first day, then either a 20 minutes HIIT at 80–90% of HRmax or a 20 minutes SST at 60% of HRmax was randomly performed on the second and third day, respectively. Plantar pressure parameters were collected at comfortable walking velocity immediately after HIIT and SST respectively, and compared with the baseline data of plantar pressure gathered before maximal ramp test on the first day. The results showed significant differences in the plantar pressure in these three conditions of gait. Compared to pre-intervention and pre-SST, peak pressure and maximum force in the middle and lateral metatarsal increased significantly in post-HIIT. Meanwhile, the foot balance data indicate that post-HIIT exhibits more foot pronation than baseline. The center of pressure (COP) trajectory was medially shifted during the stance phase in post-SST, and noticeably in post-HIIT. The displacement and velocity of medial-lateral COP in the initial contact phase were greater in post-HIIT; while during the forefoot contact phase, post-HIIT showed fewer time percentages and greater velocity of medial-lateral COP. In conclusion, a single high-intensity intermittent training session adversely affected the acute dynamic postural control than steady-state training in healthy male adults.

Acute effects of high-intensity intermittent training on kinematics and foot strike patterns in endurance runners

2016 ◽  
Vol 35 (13) ◽  
pp. 1247-1254 ◽  
Author(s):  
P. Á. Latorre-Román ◽  
F. García Pinillos ◽  
P. Bujalance-Moreno ◽  
V. M. Soto-Hermoso
Keyword(s):  
High Intensity ◽  
Acute Effects ◽  
Intermittent Training ◽  
Foot Strike ◽  
Endurance Runners

scholarly journals Efficacy of High-Intensity Intermittent Training for Improving Cardio-Metabolic Health in Women With Polycystic Ovary Syndrome

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. A353-A354
Author(s):  
Rhiannon Kate Patten ◽  
Luke Colin McIlvenna ◽  
Danielle S Hiam ◽  
Alba Moreno-Asso ◽  
Nigel Keith Stepto
Keyword(s):  
Insulin Sensitivity ◽  
Polycystic Ovary Syndrome ◽  
High Intensity ◽  
Polycystic Ovary ◽  
Metabolic Health ◽  
Moderate Intensity ◽  
Sensitivity Index ◽  
Maximal Heart Rate ◽  
Ovary Syndrome ◽  
Intermittent Training

Abstract Polycystic ovary syndrome (PCOS) is a common and complex endocrinopathy with significant metabolic and reproductive manifestations, carrying a major health and economic burden. Consistent improvements in clinical outcomes have been reported as a result of exercise training, but shortfalls with exercise prescription are evident. Research suggests that high-intensity intermittent training (HIIT) is feasible, well tolerated and enjoyable for people with or at risk of chronic disease and can address many of the shortfalls and barriers to exercise participation. To investigate the effects of high-intensity exercise on cardio-metabolic health, twenty-four reproductive aged, overweight or obese, sedentary women with PCOS were recruited from the community and randomised to complete either 12 weeks of moderate intensity continuous cycling training (MICT; 60–65% of maximal heart rate [HRmax]; n=11) or HIIT (90–100% HRmax; n=13). All exercise was supervised by an exercise physiologist and completed 3 times per week on a cycle ergometer. Baseline and post-testing measures consisted of peak oxygen consumption (VO2peak) determined by a graded maximal exercise test, body composition by DXA scan and insulin sensitivity determined by euglycaemic-hyperinsulinaemic clamp. Significant improvements in VO2peak were seen after both HIIT (P <0.001) and MICT (P <0.013) with a significant between-group interaction favouring HIIT (P = 0.014). The insulin sensitivity index significantly improved after HIIT (P = 0.009) with no changes observed after MICT (P = 0.860), also resulting in a significant between-group difference favouring HIIT (P = 0.046). No changes were observed for body weight, BMI or fat mass, however, there was a significant increase in percentage of lean mass after HIIT (P = 0.026). The present study is the first to compare current exercise recommendations of moderate and vigorous intensities in women with PCOS. The results of this study provide preliminary validation of HIIT, suggesting that vigorous intensity exercise should be considered in order to improve cardio-metabolic health in women with PCOS.

scholarly journals Measurement and Feature Analysis of Plantar Pressure Center in Athletes under Different Exercise Modes

2020 ◽  
Vol 19 (5) ◽  
pp. 399-403
Author(s):  
Jie Yang
Keyword(s):  
Plantar Pressure ◽  
Scientific Basis ◽  
Initial Contact ◽  
Pressure Center ◽  
Contact Phase ◽  
Exercise Mode ◽  
Foot Progression Angle ◽  
Main Observation ◽  
Daily Training ◽  
Left And Right

Walking and running, two essential exercises in daily training for athletes, are major causes to foot injuries. The plantar pressure center (PPC) can accurately reflect the gait process, and effectively measure the function of foot. This paper measures the PPC trajectories of a total of 45 athletes during the support period of walking and running, and analyzes their regularities under different exercise modes. The time percentage of PPC trajectory and foot progression angle were selected as the main observation indices. The support period under each exercise mode was divided into four phases: the initial contact phase (ICP), the forefoot contact phase (FFCP), the foot flat phase (FFP), and the forefoot push off phase (FFPOP). The statistical analysis shows that: Under the running mode, the time of the heel landing on the ground and the relative load on the heel decrease with the growing speed. Under the same exercise mode, the left and right feet differ slightly in the PPC trajectory; the foot progression angle peaks in FFPOP and minimizes in FFP. In ICP and FFPOP, the foot progression angle under running is smaller than that under walking; in FFP and FFCP, the foot progression angle under running is larger than that under walking. The research results provide the scientific basis for the reasonable arrangement of athlete training.

scholarly journals Recovery from Different High-Intensity Interval Training Protocols: Comparing Well-Trained Women and Men

Sports ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 34
Author(s):  
Laura Hottenrott ◽  
Martin Möhle ◽  
Alexander Ide ◽  
Sascha Ketelhut ◽  
Oliver Stoll ◽  
...  
Keyword(s):  
Sex Differences ◽  
High Intensity ◽  
Interval Training ◽  
Fat Free Mass ◽  
Subjective Rating ◽  
Maximal Heart Rate ◽  
High Intensity Interval Training ◽  
Active Recovery ◽  
Training Response ◽  
High Intensity Interval

Due to physiological and anatomical sex differences, there are variations in the training response, and the recovery periods following exercise may be different. High-intensity interval training (HIIT) protocols are well-suited to differentially investigate the course of recovery. This study was conducted to determine sex-specific differences in the recovery following HIIT intervals interspersed with recovery phases of different lengths. Methods: Well-trained cyclists and triathletes (n = 11 females, n = 11 males) participated in this study. There were no significant sex differences in maximal heart rate (HR), relative peak power to body mass and fat-free mass, training volume, and VO2max-percentiles (females: 91.8 ± 5.5 %, males: 94.6 ± 5.4 %). A 30 s Wingate test was performed four times, separated by different active recovery periods (1, 3, or 10 min). Lactate, HR, oxygen uptake, and subjective rating of exertion and recovery were determined. Results: For the recovery time of three and ten minutes, men showed significantly higher lactate concentrations (p = 0.04, p = 0.004). Contrary, HR recovery and subjective recovery were significant slower in women than in men. Conclusion: During HIIT, women may be more resistant to fatigue and have a greater ability to recover metabolically, but have a slower HR and subjective recovery.

scholarly journals Acute effects of strength and endurance exercise on serum BDNF and IGF-1 levels in older men

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Hamid Arazi ◽  
Parvin Babaei ◽  
Makan Moghimi ◽  
Abbas Asadi
Keyword(s):  
Endurance Exercise ◽  
Brain Function ◽  
Older Men ◽  
Control Group ◽  
Maximal Heart Rate ◽  
Acute Effects ◽  
Control Groups ◽  
Post Exercise ◽  
And Control ◽  
Serum Bdnf

Abstract Background Regarding an important effects of physical exercise on brain function in elders, the aim of this study was to examine the effects of strength and endurance exercise on brain neurobiological factors in older men. Methods Thirty older men volunteered to participate in this study and were randomly assigned to strength, endurance and control groups. The subjects in strength group performed two circuits of resistance exercise (6 exercises with 10 repetition of 65–70% of one repetition maximum), while endurance group performed 30 min running with 65–70% of maximal heart rate. Blood was obtained pre and post-exercise to determine changes in serum BDNF, IGF-1 and platelets. Results After exercise, both the strength and endurance groups showed significant increases in serum BDNF and IGF-1 concentrations and platelets at post-exercise and in comparison to control group (p < 0.05). In addition, no statistically significant differences were detected between the strength and endurance groups at post-exercise. Conclusion Our findings indicate that both the strength and endurance interventions are effective in elevating BDNF, IGF-1, and platelets, without significant differences between them.

scholarly journals Kinematic alterations after two high-intensity intermittent training protocols in endurance runners

2019 ◽  
Vol 8 (5) ◽  
pp. 442-449 ◽  
Author(s):  
Felipe García-Pinillos ◽  
Alejandro Molina-Molina ◽  
Juan A. Párraga-Montilla ◽  
Pedro A. Latorre-Román
Keyword(s):  
High Intensity ◽  
Intermittent Training ◽  
Endurance Runners ◽  
Training Protocols

scholarly journals Morning/Evening Differences in Somatosensory Inputs for Postural Control

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Clément Bougard ◽  
Damien Davenne
Keyword(s):  
Body Temperature ◽  
Postural Control ◽  
Path Length ◽  
Centre Of Pressure ◽  
Healthy Male ◽  
Pressure Surface ◽  
Diurnal Fluctuations ◽  
Control Evaluation ◽  
Underlying Processes ◽  
Male Subjects

The underlying processes responsible for the differences between morning and afternoon measurements of postural control have not yet been clearly identified. This study was conducted to specify the role played by vestibular, visual, and somatosensory inputs in postural balance and their link with the diurnal fluctuations of body temperature and vigilance level. Nineteen healthy male subjects (mean age: 20.5 ± 1.3 years) participated in test sessions at 6:00 a.m. and 6:00 p.m. after a normal night’s sleep. Temperature was measured before the subjects completed a sign cancellation test and a postural control evaluation with eyes both open and closed. Our results confirmed that postural control improved throughout the day according to the circadian rhythm of body temperature and sleepiness/vigilance. The path length as a function of surface ratio increased between 6:00 a.m. and 6:00 p.m. This is due to a decrease in the centre-of-pressure surface area, which is associated with an increase in path length. Romberg’s index did not change throughout the day; however, the spectral analysis (fast Fourier transform) of the centre-of-pressure excursions (in anteroposterior and mediolateral directions) indicated that diurnal fluctuations in postural control may occur via changes in the different processes responsible for readjustment via muscle contractions.

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