| Title |
Increased rate of force development during periodized maximum strength and power training is highly individual
|
|---|---|
| Published in |
European Journal of Applied Physiology, March 2018
|
| DOI | 10.1007/s00421-018-3836-9 |
| Pubmed ID | |
| Authors |
Heikki Peltonen, Simon Walker, Anthony C. Hackney, Janne Avela, Keijo Häkkinen |
| Abstract |
Maximum strength training induces various improvements in the rate of force development (RFD) on a group level, but no study has investigated inter-individual adaptations in RFD. Fourteen men (28 ± 6 years old) performed the same 10-week maximum strength and then a 10-week power training program. Maximal force and RFD were recorded during maximal isometric leg extension voluntary contractions repeatedly before every 7th training session (2 sessions/week). After the intervention, subjects were retrospectively divided into three groups based on their RFD improvements: (1) improved only during the maximum strength period (MS-responders, + 100 ± 35%), (2) improved only during the power period (P-responders, + 53 ± 27%) or (3) no improvement at all (non-responders, + 3 ± 9%). All groups increased dynamic 1RM equally, but baseline 1RM was greater (p < 0.05) in responder vs non-responder groups. MS-responders had higher electrical stimulation-induced torque at baseline and they improved (+ 35 ± 28%) power production at 50% 1RM load more than P- (- 7 ± 20%, p = 0.052) and non-responders (+ 3 ± 6%, p = 0.066) during the maximum strength training period. MS-responders increased vastus lateralis cross-sectional area (+ 12 ± 9%, p < 0.01) as did P-responders (+ 10 ± 7%, p = 0.07), whereas non-responders were unchanged. Free androgen index (FAI) in responders was higher (+ 34%, p < 0.05) compared to non-responders at baseline. The maximum strength period decreased testosterone (- 17 ± 12; 17 ± 22%), FAI ratio (- 12 ± 14; - 21 ± 23%) and testosterone/cortisol ratio (- 17 ± 25; - 31 ± 20%) in MS and P-responders, respectively. During the P-period hormonal levels plateaued. To conclude, periodized strength training induced different inter-individual physiological responses, and thus RFD development may vary between individuals. Therefore, RFD seems to be a useful tool for planning and monitoring strength training programs for individual neuromuscular performance needs. |
X Demographics
The data shown below were collected from the profiles of 47 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 6 | 13% |
| United Kingdom | 5 | 11% |
| Brazil | 3 | 6% |
| Spain | 2 | 4% |
| Sweden | 2 | 4% |
| Finland | 2 | 4% |
| Venezuela, Bolivarian Republic of | 1 | 2% |
| Germany | 1 | 2% |
| Ireland | 1 | 2% |
| Other | 2 | 4% |
| Unknown | 22 | 47% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 24 | 51% |
| Scientists | 20 | 43% |
| Practitioners (doctors, other healthcare professionals) | 3 | 6% |
Mendeley readers
The data shown below were compiled from readership statistics for 140 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 140 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Bachelor | 27 | 19% |
| Student > Master | 20 | 14% |
| Student > Ph. D. Student | 12 | 9% |
| Professor | 8 | 6% |
| Researcher | 6 | 4% |
| Other | 22 | 16% |
| Unknown | 45 | 32% |
| Readers by discipline | Count | As % |
|---|---|---|
| Sports and Recreations | 64 | 46% |
| Medicine and Dentistry | 10 | 7% |
| Nursing and Health Professions | 6 | 4% |
| Agricultural and Biological Sciences | 3 | 2% |
| Unspecified | 3 | 2% |
| Other | 8 | 6% |
| Unknown | 46 | 33% |
Attention Score in Context
This research output has an Altmetric Attention Score of 27. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 10 February 2021.
All research outputs
#1,412,132
of 25,382,440 outputs
Outputs from European Journal of Applied Physiology
#445
of 4,345 outputs
Outputs of similar age
#31,058
of 347,366 outputs
Outputs of similar age from European Journal of Applied Physiology
#7
of 56 outputs
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So far Altmetric has tracked 4,345 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 14.7. This one has done well, scoring higher than 89% of its peers.
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