Temperature Effect on the Rates of Isometric Force Development and Relaxation in the Fresh and Fatigued Human Adductor Pollicis Muscle

Ruiter, C.J. de; Jones, David A.; SARGEANT, A. J.; Haan, A. de

doi:10.1017/s0958067099018953

Cited by 90 publications

(117 citation statements)

References 17 publications

Supporting

Mentioning

103

Contrasting

Unclassified

Order By: Relevance

“…In laboratory tasks, however, these phases may be separated by asking the subjects to perform accurate alternating phases of force increase and decrease that require agonist muscle contraction and relaxation respectively. A few studies explored the control of accurate muscle relaxation tasks at various rates (Häkkinen & Komi, 1986; Ruiter, Jones, Sargeant, & Haan, 1999; Schieppati & Crenna, 1984; Shim, Olafsdottir, Zatsiorsky, & Latash, 2005b). In the study by Shim and colleagues, accuracy of performance during accurate ramp-like force decrease was worse than during force increase for slow tasks and better than during force increase with very short ramp times.…”

Section: Discussionmentioning

confidence: 99%

Effects of fatigue on synergies in a hierarchical system

Singh

Zatsiorsky

Latash

2012

Human Movement Science

View full text Add to dashboard Cite

We investigated the effect of fatigue produced by timed maximal voluntary contraction (MVC) of the index finger of one of the hands on performance in MVC and accurate cyclic force production tasks in right-handed subjects. Based on earlier studies, we hypothesized that fatigue would produce an increase in the indices of force-stabilizing synergies in both hands as well as between the hands in two-hand tasks. Synergies were defined as co-varied adjustments of commands to fingers (modes) across cycles that stabilized total force. Fatigue caused a significant reduction in the MVC of the exercised as well as the non-exercised hand. Indices of finger enslaving (lack of individuation) increased with fatigue in both hands, although the increase was significant in the exercised hand only. In contrast to the significant effects of fatigue on MVC forces performed by the non-exercised hand, there were no comparable transfer effects on the root mean square errors during accurate force production. During one-hand tasks, both hands showed high indices of force-stabilizing synergies. These indices were larger in the left hand. Fatigue led to a general increase in synergy indices. Exercise by the left hand had stronger effects on synergy indices seen in both hands. Exercise by the right hand showed ipsilateral effects only. Smaller effects of fatigue were observed on accuracy of performance of the force-down segments of the force cycles compared to the force-up segments. For the bimanual tasks, synergies were analyzed at two hierarchical levels, two-hand (four-finger) and within-a-hand (two-finger). An increase in the synergy index with fatigue was observed at the lower (two-finger) level of the hierarchy only. We interpret the lack of effects of fatigue at the upper (two-hand) level as a consequence of a trade-off between synergies at different levels of the hierarchy. The differences between the hands are discussed within the dynamic dominance hypothesis.

show abstract

Section: Discussionmentioning

confidence: 99%

Effects of fatigue on synergies in a hierarchical system

Singh

Zatsiorsky

Latash

2012

Human Movement Science

View full text Add to dashboard Cite

show abstract

“…The onset of torque development was defined as the point at which torque exceeded 2% of peak torque for a given contraction. Peak RTD was also normalized relative to peak torque of that contraction (RTD rel ) to control for variation between subjects in muscle size and strength (21, 36, 49), as we observed that peak RTD was related to overall peak torque and muscle size (see Results, 3.2 ).…”

Section: Methodsmentioning

confidence: 99%

Reduced rate of knee extensor torque development in older adults with knee osteoarthritis is associated with intrinsic muscle contractile deficits

Callahan

Tourville

Slauterbeck

et al. 2015

Experimental Gerontology

View full text Add to dashboard Cite

We examined the effect of knee osteoarthritis on the rate of torque development (RTD) of the knee extensors in older adults with advanced-stage knee osteoarthritis (OA; n=15) and recreationally-active controls (n=15) of similar age, sex and health status, as well as the relationship between RTD and the size and contractility of single muscle fibers. OA participants had lower RTD when expressed in absolute terms (Nm/ms). There were sex differences in peak RTD (P<0.05), with greater RTD in men, but no group by sex interaction effects for any variables. The lower RTD in OA versus controls was not explained by variation between groups in the fiber type admixture of the muscle, and was mitigated when RTD was normalized to peak torque (PT). In knee OA volunteers, we found strong correlations between the RTD expressed relative to PT and the velocity of contraction of single myosin heavy chain (MHC) I and IIA/X muscle fibers (r=0.652 and 0.862; both P<0.05) and power output of MHC I fibers (r=0.642; P<0.05). In controls, RTD relative to PT was related to fiber cross-sectional area of MHC IIA/X fibers (r=0.707; P<0.05), but not measures of single fiber contractile performance. To our knowledge, these results represent the first demonstration that variation in whole muscle contractile kinetics in patients with advanced-stage knee osteoarthritis and healthy older adults is related, in part, to the size and function of single muscle fibers.

show abstract

“…Of the many forms of cryotherapy used to this end, CWI is the most popular in the literature and in practice [2]. Several studies have investigated [5-11] and reviewed [2,3,12-14] the effects of CWI for reducing soreness and speeding the recovery of force-generating capacity by skeletal muscles following stressful bouts of exercise. However, evidence regarding the efficacy of CWI, and cryotherapy in general, to speed recovery remains equivocal.…”

Section: Reviewmentioning

confidence: 99%

“…CWI may restore vagal tone and normalize parasympathetic modulation of heart rate following intense exercise [11,72-74]. Heart rate recovery and heart rate variability indices seem to be improved by immersion of subjects in thermoneutral (34°C) or CWI (15°C) temperatures compared to no immersion [73].…”

Section: Reviewmentioning

confidence: 99%

Cold-water immersion and other forms of cryotherapy: physiological changes potentially affecting recovery from high-intensity exercise

2013

View full text Add to dashboard Cite

High-intensity exercise is associated with mechanical and/or metabolic stresses that lead to reduced performance capacity of skeletal muscle, soreness and inflammation. Cold-water immersion and other forms of cryotherapy are commonly used following a high-intensity bout of exercise to speed recovery. Cryotherapy in its various forms has been used in this capacity for a number of years; however, the mechanisms underlying its recovery effects post-exercise remain elusive. The fundamental change induced by cold therapy is a reduction in tissue temperature, which subsequently exerts local effects on blood flow, cell swelling and metabolism and neural conductance velocity. Systemically, cold therapy causes core temperature reduction and cardiovascular and endocrine changes. A major hindrance to defining guidelines for best practice for the use of the various forms of cryotherapy is an incongruity between mechanistic studies investigating these physiological changes induced by cold and applied studies investigating the functional effects of cold for recovery from high-intensity exercise. When possible, studies investigating the functional recovery effects of cold therapy for recovery from exercise should concomitantly measure intramuscular temperature and relevant temperature-dependent physiological changes induced by this type of recovery strategy. This review will discuss the acute physiological changes induced by various cryotherapy modalities that may affect recovery in the hours to days (<5 days) that follow high-intensity exercise.

show abstract

Temperature Effect on the Rates of Isometric Force Development and Relaxation in the Fresh and Fatigued Human Adductor Pollicis Muscle

Cited by 90 publications

References 17 publications

Effects of fatigue on synergies in a hierarchical system

Effects of fatigue on synergies in a hierarchical system

Reduced rate of knee extensor torque development in older adults with knee osteoarthritis is associated with intrinsic muscle contractile deficits

Cold-water immersion and other forms of cryotherapy: physiological changes potentially affecting recovery from high-intensity exercise

Contact Info

Product

Resources

About