The Different Muscle-Energetics during Shortening and Stretch

Jarosch, R.

doi:10.3390/ijms12052891

Cited by 7 publications

(7 citation statements)

References 33 publications

(47 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Four studies found that hamstring heating increased knee extension [12,17,43] [17] or untreated controls (MD, .36deg [95% CI, 4.87 to 5.59]). [43] These study results also agree with Chris M. and Joseph T, 2013 [9] It was concluded and there was clear evidence that combined heat and stretching is more effective than stretching alone.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Flexibility Augmented by Heat-applied Stretching Exercise Compared to Exercise Without Additional External Heat

Derbachew¹

2020

AJLS

View full text Add to dashboard Cite

Introduction: the goal of stretching can vary; such diversify aims as enhancing performance, preventing injury and recovering from following injury. Objective: The aim of study is to examine 80 male football project players to determine; if heat applied stretching would better improvement in flexibility or not. Method: To achieve the intended objective randomized experimental design was implemented. Players who have been volunteered and fulfilled the research inclusion criteria are recruited and randomly grouped in to four equal sections. The first group was control group and did not perform any treatment, whereas the rest 3 experimental groups followed six weeks intervention program (3 days per week). SEG (Stretching Exercise Group only) engaged in stretching exercises only, on the other hand the remaining groups HP=Heat Packs Group and CP=Cold Packs Group undertaking thermal interventions (hot and cold packs respectively) for 20 minutes before performing the stretching exercise. Cold exposure was examined to see if it would have the opposite effect. On the study sit and reach test used as a standard measuring tool. For instance to inspect actual changes in groups, and also paired t-test was used to compare mean value, to this end the difference between groups was tested dependent t-test. The analysis conducted by SPSS-V 25 and in commenting on the analysis results, significance and rated at p< .05 level. Result: Except Control Group, all experimental groups produced significant improvement in flexibility; however interventions produced different results, the mean Pre/Post differences and (p<.05) were .81 (p<.03) for Group two, 2.2 (p<.01) for Group three and .5.9 (p<.04) for Group four. When compared with groups, the Group which received heat packs prior to stretching obtained the greatest improvement in flexibility, which resulted in applied heat. In line to the result the investigator noticed heat applied stretching exercise is the most effective for promoting flexibility and cold exposure may limit flexibility improvement, but it wasn't seen having the opposite effect. All in all these finding seem to support and endorse the use of heat as an adjunct with stretching techniques in improving flexibility.

show abstract

Section: Discussionmentioning

confidence: 99%

“…Heat applied to peripheral tissues also can be used to increase the flexibility in body [12,13]. The application of heat reduces pain [14] and increase blood flow to tissue [15], Increasing soft tissue temperature prior to exercise is an accepted practice.…”

Section: Introductionmentioning

confidence: 99%

Flexibility Augmented by Heat-applied Stretching Exercise Compared to Exercise Without Additional External Heat

Derbachew¹

2020

AJLS

View full text Add to dashboard Cite

show abstract

“…Actin is the main component of the thin filaments in muscle. During stretch and muscle contraction, the steep helical structure (70°) rotates and stores energy to aid the series elastic component in muscle [12]. This is due to the fact that the thin filaments are a double helix wound in a counter-clockwise rotation [43].…”

Section: Discussionmentioning

confidence: 99%

“…Heat also increases glycogen resynthesis and muscle recovery [10]. Heat is also cited as increasing flexibility and thus reducing the chance of injury, and reducing energy cost of muscle contraction by reducing internal friction [11,12]. Internal energy costs are reduced by warming muscle, but many of these studies have been done in animals and very few in humans.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of heat and cold on tendon flexibility and force to flex the human knee

Lee

2013

Med Sci Monit

View full text Add to dashboard Cite

BackgroundIt is commonly believed in medicine that using heat will increase the distensability and flexibility of soft tissue. If true, increased flexibility would be a positive factor to reduce injuries in sports. However, cold should have the opposite effect and is often used to treat sports injuries. This study was accomplished to quantify the effect of heat and cold on the force needed to flex the knee and laxness of the anterior and posterior cruciate ligaments.Material/MethodsThe present study examined 20 male and female subjects to determine if heat would increase extensibility of the anterior and posterior cruciate ligaments of the knee and reduce the force needed to flex the knee. Cold exposure was examined to see if it would have the opposite effect. There were 4 experiments in the series: The first was a room temperature series; the second was a series where cold was applied with an ice pack for 20 minutes; in the third, hydrocollator heat packs were applied for 20 minutes; and in the fourth, ThermaCare heat wraps were applied for 4 hours on the quadriceps and knee. Tendon extensibility was measured with a KT2000. The force for flexing the knee was measured by passive movement being applied (CPM) to the knee through 30° and the force required to move the leg was measured.ResultsThe results show that the anterior and posterior cruciate ligament flexibility increased and the force needed to move the knee decreased with heat by about 25% compared to cold application.ConclusionsHeat is beneficial in increasing muscle and ligament flexibility and may help reduce athletic injuries, but cold treatment may have the opposite effect.

show abstract

Differences in anterior cruciate ligament elasticity and force for knee flexion in women: oral contraceptive users versus non-oral contraceptive users

et al. 2013

View full text Add to dashboard Cite

Eighty-two percent of sexually active women aged 15-44 have used oral contraceptive pills (OCP) in the United States. The OCP, an exogenous source of synthetic forms of steroid hormones, prevents ovulation. Hormone changes during the menstrual cycle (MC) are believed to have an impact on anterior cruciate ligament (ACL) laxity due to estrogen. Because the estrogen receptor β resides on human connective tissue, OCP may have potential impact on tendon and ligament synthesis, structure, and biomechanical properties. Temperature has also been known to have an effect on tissue elasticity. Therefore, the purpose of this study was to investigate the differences in ACL elasticity, force to flex the knee (FFK), and knee flexion-extension hysteresis (KFEH) between OCP users and non-OCP users. To investigate these changes, two different knee temperatures were measured. Nineteen young females were divided into two groups: OCP users and non-OCP users. Blood for estradiol serum concentration (E2) was taken before beginning the tests. ACL elasticity, FFK, and KFEH were assessed both at ambient temperature (22 °C) and after 38 °C warming of the leg to stabilize tissue temperature. Assessments were performed four times during the MC. Throughout the MC, ACL elasticity, FFK, and KFEH fluctuated in non-OCP users, but not in OCP users. At ambient temperature, ACL elasticity was significantly lower and FFK and KFEH were significantly higher in OCP users than non-OCP users (p < 0.05). But, no significant differences in FFK and KFEH between the two groups were found after warming to 38 °C.

show abstract

The Different Muscle-Energetics during Shortening and Stretch

Cited by 7 publications

References 33 publications

Flexibility Augmented by Heat-applied Stretching Exercise Compared to Exercise Without Additional External Heat

Flexibility Augmented by Heat-applied Stretching Exercise Compared to Exercise Without Additional External Heat

Effect of heat and cold on tendon flexibility and force to flex the human knee

Differences in anterior cruciate ligament elasticity and force for knee flexion in women: oral contraceptive users versus non-oral contraceptive users

Contact Info

Product

Resources

About