Effect of downhill sprint training on speed of school boys

Muthuraj, Muthusivaramapandian

doi:10.26524/2017302

Cited by 3 publications

(7 citation statements)

References 4 publications

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“…The individuals in the experimental group underwent an eight-week sand-running training program. This program included activities, such as walking, continuous jogging, striding, bounding, galloping, and short sprints [16]. These training sessions took place three times a week, with a warm-up and stretching session at the beginning, and a cool-down session at the end.…”

Section: Training Program and Experimental Proceduresmentioning

confidence: 99%

“…These training sessions took place three times a week, with a warm-up and stretching session at the beginning, and a cool-down session at the end. [16]. Each session lasted for a total of 50 minutes [16].…”

Section: Training Program and Experimental Proceduresmentioning

confidence: 99%

“…[16]. Each session lasted for a total of 50 minutes [16]. The individuals in the control group did not engage in any exercise and were reassessed after 8 weeks.…”

Section: Training Program and Experimental Proceduresmentioning

confidence: 99%

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Running Mechanics After Training on Sand in Runners With Pronated Feet: A Randomized Controlled Trial

Fatollahi,

Jafarnezhadgero,

Mousavi

2024

PTJ

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Purpose: Pronation in the foot is a normal rolling movement occurring at the subtalar joint during running. The human foot, as the primary interface with our environment, presents morphological and postural changes following prolonged running. This study aims to identify running mechanics while training on the sand in runners with pronated feet. Methods: Thirty runners with pronated feet were in the control group, and 30 runners with pronated feet were in the experimental group. An experimental group conducted an 8-week corrective exercise program, while a control group did not exercise. A force plate was included to collect ground reaction forces in the walkway. An analysis of variance (ANOVA) with repeated measures test was conducted to identify the presence of an interaction between the within-and between-subject factors on the dependent variables. The significance level was set at P<0.05. Results: The experimental group displayed lower first peak vertical ground reaction force (P=0.026), peak mediolateral ground reaction force (P=0.000), anterior-posterior impulse (P=0.032), loading rate (P=0.004) and a larger last peak vertical ground reaction force (P=0.000) during training on the sand. Irrespective of the group under consideration, a lower first peak mediolateral ground reaction force (P=0.000), peak positive free moment amplitude (P=0.001), and a larger last peak mediolateral ground reaction force (P=0.003) observed in the post-test compared to the pre-test. Conclusion: We suggest that training on sand may be a suitable intervention to change running mechanics in male runners with pronated feet.

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Section: Training Program and Experimental Proceduresmentioning

confidence: 99%

Section: Training Program and Experimental Proceduresmentioning

confidence: 99%

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Running Mechanics After Training on Sand in Runners With Pronated Feet: A Randomized Controlled Trial

Fatollahi,

Jafarnezhadgero,

Mousavi

2024

PTJ

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“…The program included jogging, striding, bounding, galloping, and short sprints. The group attended three sessions per week [28]. The exercise program was performed with bare feet.…”

Section: Exercise Protocolmentioning

confidence: 99%

“…The exercise program was performed with bare feet. The start of each session included a 5-min warm-up and stretching, followed by a 5-min warm-up at the end [28]. The exercise duration was 50 min in each session [29].…”

Section: Exercise Protocolmentioning

confidence: 99%

Sand Exercises Altered Muscular Frequency Content in Individuals With Anterior Cruciate Ligament Reconstruction and Pronated Feet During Walking

Sheikhalizade,

Imani,

Jafarnezhadgero

et al. 2024

PTJ

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This study investigates the effects of exercises on sand on the frequency content of the lower limb muscles in individuals with anterior cruciate ligament reconstruction and pronated feet during walking. Methods:This was a semi-experimental and laboratory-type study. The study samples included 28 male students with pronated feet and anterior cruciate ligament reconstruction aged 22 to 25 years. The participants were randomly allocated into the following two groups: The experimental and the control group. The electrical activity of the lower limb muscles was recorded using an electromyography system before and after performing the exercises. The statistical analysis was done using a two-way analysis of variance method with a significance level of 0.05. Results:The findings showed that the main effect of time for the frequency content of the tibialis anterior, medial gastrocnemius, vastus medialis muscles during loading and push-off phases, the vastus lateralis muscle during the mid-stance, the rectus femoris at the mid-stance and pushoff phases, semitendinosus muscle during the loading, mid-stance and push-off phases, biceps femoris muscle during the mid-stance and push-off phases, and gluteus medius muscle during the push-off phase (P<0.039; d=0.166-0.606). Conclusion:The group-by-time interaction for the semitendinosus muscle during the loading phase was significant. Exercise on sand can improve walking performance by altering muscular frequency content.

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Long-term Exercises on Sand Improved Frequency Spectrum of Lower Limb Muscles During Running in Runners With Over-pronated Feet

Jafarnezhadgero,

Gadehri,

Fakhri Mirzanag

2023

PTJ

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Purpose: Pronated feet (PF) are associated with biomechanical changes during running. It seems that sand training can be a suitable intervention for rehabilitation in individuals with over-pronated feet. This study aims to investigate the effect of long-term exercises on the sand on the frequency of lower limb muscles during running in runners with over-pronated feet. Methods: The current study was a quasi-experimental type. A total of 29 controls with a mean age of 22.2±2.5 years (control group [CG]) and 30 pronated feet (PF) individuals with a mean age of 22.2±1.9 years (intervention group [IG]) participated in this study. In both pre and post-test phases, participants run barefoot on an 18-m runway at a constant velocity of 3.3±5% m/s while EMG activity was recorded using an EMG system. The sand training includes barefoot running for 3 sessions per week for 8 weeks. The frequency of lower limb muscle activities was used as a dependent variable. Repeated-measures analysis of variance (ANOVA) test was used for statistical analysis. Results: The results demonstrated a significant group×time interaction for gluteus medius (gluteus-M) frequency content at the mid-stance phase (P<0.001; η2=0.670). The results demonstrated an increase of frequency content for gluteus-M in CG (but not in IG) at post-test compared to the pre-test. The results demonstrated a significant group×time interaction for medial gastrocnemius (Gas-M) frequency content at push-off phase (P=0.049; η2 =0.298). Post-hoc analysis demonstrated an increase of Gas-M frequency content in IG (but not in the CG) at the post-test compared to the pre-test. Conclusion: As mentioned in a previous study, the reduction of gluteus-M frequency content in IG may be associated with reduced foot pronation after sand training. A higher Gas-M frequency content in the IG after training may lead to improved force generation during the push-off phase.

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Effect of downhill sprint training on speed of school boys

Cited by 3 publications

References 4 publications

Running Mechanics After Training on Sand in Runners With Pronated Feet: A Randomized Controlled Trial

Running Mechanics After Training on Sand in Runners With Pronated Feet: A Randomized Controlled Trial

Sand Exercises Altered Muscular Frequency Content in Individuals With Anterior Cruciate Ligament Reconstruction and Pronated Feet During Walking

Long-term Exercises on Sand Improved Frequency Spectrum of Lower Limb Muscles During Running in Runners With Over-pronated Feet

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