Ali Abdolmohamadi’s scientific contributions

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Publications (3)


Recruitment flowchart from enrolment to data analysis
Mean of dietary and energy intake 48 h before pre-testing (left column for each group) and post-testing (right column for each group).
Changes in anthropometric outcomes after 6 weeks of plyometric jump training in traditional sets (TRS) group with no intra-set rest, and three cluster sets (CLS) groups with 10 (CLS10), 20 (CLS20), and 30 (CLS30) seconds intra-set rest
Fig a, c: white and orange columns denote outcomes results before and after the intervention. Moreover, each circle corresponds to a single subject. Fig b, d: the columns (percentage change) and circles (effect size) correspond to the left and right y axis, respectively.
Changes in performance parameters after 6 weeks of plyometric jump training in traditional sets (TRS) group with no intra-set rest, and three cluster sets (CLS) groups with 10 (CLS10), 20 (CLS20), and 30 (CLS30) seconds intra-set rest
Fig a, c, e, g, i: white and orange columns denote outcomes results before and after the intervention. Moreover, each circle corresponds to a single subject. Fig b, d, f, h, j: the columns (percentage change) and circles (effect size) correspond to the left and right y axis, respectively.
Changes in a) the rating of fatigue, and b) percentage change (the columns) and effect size (the circles), after 6 weeks of plyometric jump training in traditional sets (TRS) group with no intra-set rest, and three cluster sets (CLS) groups with 10 (CLS10), 20 (CLS20), and 30 (CLS30) seconds intra-set rest. Fig a: white and orange columns denote outcomes results before and after the intervention. Moreover, each circle corresponds to a single subject.

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Effects of different cluster-set rest intervals during plyometric-jump training on measures of physical fitness: A randomized trial
  • Article
  • Full-text available

October 2023

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243 Reads

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3 Citations

Behzad Taaty Moghadam

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The optimal intra-set rest for cluster sets (CLS) during plyometric-jump training (PJT) to improve physical fitness remains unclear. The objective of this quasi-experimental study was to compare the effects of PJT with traditional (TRS) vs. CLS structures, using different intra-set rests, on the physical fitness of healthy participants. Forty-seven recreationally active young men performed 3–5 sets of 10–12 repetitions of upper- and lower-body PJT exercises twice a week for six weeks using different set configurations: TRS group (no intra-set rest), and the CLS10, CLS20 and CLS30 groups with 10, 20 and 30 s of intra-set rest, respectively, while the total rest period was equated. Pretest-posttest measurements were carried out 48 h before and after the intervention and the rating of fatigue (ROF) was also assessed using a numerical scale (0–10 points) 20 min after the first and last (i.e., 12th) session. There was no significant difference in the mean energy intake between groups (p > 0.05). The repeated measures ANOVA revealed that all groups showed similar improvements (p < 0.05) in body mass, body mass index, fat-free mass, one repetition maximum (dynamic strength) and repetitions to failure (muscular endurance) in back squat and chest press, handgrip strength, standing long jump, 20 m sprint, 9-m shuttle run (change of direction speed), and ROF. Of note, the ROF was lower for the CLS20 and CLS30 groups, independent from the training effect. The physical fitness of recreationally active young men improved after 6 weeks of PJT involving intra-set rest intervals of 0 s, 10 s, 20 s, or 30 s. However, an intra-set rest of 20 s and 30 s seems to induce lower exercise-induced fatigue perception.

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Effects of different cluster-set rest intervals during plyometric-jump training on measures of physical fitness

April 2023

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184 Reads

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1 Citation

The optimal intra-set rest in cluster sets (CLS) plyometric-jump training (PJT) to improve physical fitness remains unclear. Thus, this study compared the effects of PJT with traditional (TRS) vs. CLS structures using different intra-set rests on physical fitness components. Forty-seven recreationally active young men performed 3-5 sets of 10-12 repetitions of upper- and lower-body exercises twice a week for six weeks using different set configurations as the TRS group (no intra-set rest), and the CLS10, CLS20 and CLS30 groups with 10, 20 and 30 s intra-set rest, respectively, while the total rest period (i.e., 180 s) was equated. Testing was carried out 48 h before and after the intervention and the rating of fatigue (ROF) was also assessed 20 min after the first and last session. There was no significant difference in the mean energy intake between groups (p > 0.05). The ANCOVA revealed that all groups showed similar improvements (p < 0.05) in body mass, body mass index, fat-free mass, one repetition maximum (dynamic strength) and repetitions to failure (muscular endurance) in back squat and chest press, handgrip strength, standing long jump, 20 m sprint, and 9-m shuttle run (change of direction speed), whereas the ROF decreases were greater in the CLS20 and CLS30 groups (p < 0.05). Compared to the TRS structure, six weeks of PJT with an intra-set rest of 20 s, or 30 s induced similar improvements in the measures of physical fitness and anthropometrics, with lower exercise-induced fatigue perception.


Does Tribulus terrestris L. affect hormonal responses following high-intensity resistance exercise?

May 2022

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447 Reads

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1 Citation

Biomedical Human Kinetics

Study aim : To investigate the effect of a 2-week supplementation with Tribulus terrestris L. ( TT ) on the responses of testosterone, cortisol, and thyroid hormones including triiodothyronine (T3) and thyroxine (T4) following an intensive session of resistance exercise (RE). Materials and methods : Twenty-two healthy non-athlete men (23.8 ± 3.1 years) participated in this study were divided into two groups and were randomly assigned to receive either TT supplementation (n = 11) or a placebo (n = 11). They consumed two 250-mg capsules with TT or placebo (maltodextrin) per day and performed six REs with the intensity 80-90% of 1RM on the fifteen day of the experiment. Venous blood samples were drawn before supplementation, and before and after the RE session. Results : The mean values of post-exercise testosterone and cortisol in both groups were significantly higher than pre-exercise and baseline ( p < 0.01); however, there were no significant differences between the groups ( p > 0.05). Likewise, despite a trend toward different levels of the responses of thyroid hormones with TT supplementation, there were no significant differences either in different time points or the groups ( p > 0.05). Conclusions : Short-term supplementation with TT appears to be ineffective in changing the hormonal responses measured in this study following a session of high-intensity RE.

Citations (2)


... The intermittent rest periods incorporated in cluster-set training likely contributed to better recovery, reduced fatigue, and enhanced power output over time. This finding aligns with prior research indicating that rest intervals within sets enable athletes to maintain higher power levels and manage neuromuscular fatigue more effectively [54][55][56]. ...

Reference:

Cluster Set vs. Traditional Set in Plyometric Training: Effect on the Athletic Performance of Youth Football Players
Effects of different cluster-set rest intervals during plyometric-jump training on measures of physical fitness: A randomized trial

... [284] Commercial extract was supplemented to athletes who went through high-intensity resistance exercises and test showed that it had negligible effect on hormonal activity. [285] Toxicity and Safety Case report of a male who used traditional "herb water" (commercial solution of the plant extract), and as a result, experienced hepatotoxicity, nephrotoxicity (major damage) and neurotoxicity. He had seizures and biochemical tests revealed very high serum creatinine and aminotransferases. ...

Does Tribulus terrestris L. affect hormonal responses following high-intensity resistance exercise?

Biomedical Human Kinetics