Strength training and power output: Transference effects in the human quadriceps muscle

Abstract

The effects of strength training of the quadriceps on peak power output during isokinetic cycling has been investigated in group of 17 young healthy volunteers. Subjects trained by lifting near-maximal loads on a leg extension machine for 12 weeks. Measurements of maximal voluntary isometric force were made at 2-3 week intervals and a continual record was kept of the weights lifted in training. Peak power output was measured at 110 rev min-1 and at either 70 or 80 rev min-1 before and after the 12 week training period. Measurements of maximum oxygen uptake (VO2max) were made on 12 subjects before and after training. The greatest change was in the weights lifted in training which increased by 160-200%. This was accompanied by a much smaller increase in maximum isometric force (3-20%). There was no significant change in peak power output at either speed. The VO2max remained unchanged with training. The role of task specificity in training is discussed in relation to training regimes for power athletes and for rehabilitation of patients with muscle weakness.

Assessing Voluntary Muscle Activation with the Twitch Interpolation Technique

“…1,4,5,6,7,8,9,10,11,12] . However, the methods employed in these early studies were not particularly sensitive and higher resolution techniques [eg.…”

“…Secondly, when activation deficits have been observed, dynamic resistance training was employed whilst the tests of voluntary activation were isometric [71,98] . In these cases the lack of improvement may be indicative of the highly specific nature of the adaptation [10,100,101,102,103,104] and the known limitations of isometric tests [105] .…”

Comparison of the effect of two selected resistance training patterns on some physical and physiological factors of elite freestyle wrestler young boys

“…While the authors reported 21% increase in vertical jump height using explosive power exercises percentages. Furthermore, Rutherford et al (1986) did not show a significant change in maximum power output after 12 weeks of isokinetic resistance training with maximum National Journal of Physiology, Pharmacy and Pharmacology 284 2018 | Vol 8 | Issue 2 loads. [14] Häkkinen and Komi (1985) observed only 7% increase in vertical jump height after 24 weeks of training using maximum loads.…”

“…Furthermore, Rutherford et al (1986) did not show a significant change in maximum power output after 12 weeks of isokinetic resistance training with maximum National Journal of Physiology, Pharmacy and Pharmacology 284 2018 | Vol 8 | Issue 2 loads. [14] Häkkinen and Komi (1985) observed only 7% increase in vertical jump height after 24 weeks of training using maximum loads. [19] Most likely, due to the higher vertical jump height in the flat pyramidal group, a relatively greater increase in muscle strength was observed in this group.…”

“…In the field of muscle strength, the results of the study were compared with the results of Häkkinen and Komi (1985), [13] Rutherford et al (1986), [14] McGuinness et al (2008), [5] and Salman et al (2016). [2] Regarding the body mass index and fat percentage, the results of the non-matching with the results of researches by Yaghoub et al (2012), [3] Hosseini et al (2014), [4] Brad (2010), [15] and Brid et al (2009) [16] are consistent.…”