Search Results

You are looking at 1 - 2 of 2 items for

  • Author: Helene Pedersen x
Clear All Modify Search
Restricted access

Helene Buch Pedersen, Morten Helmer-Nielsen, Karin Brochstedt Dieperink and Birte Østergaard

Background:

Exercise on prescription (EOP) is an attempt to increase physical activity among sedentary adults with signs of lifestyle diseases. Until now, no studies have focused on patients with chronic diseases and how they assess the long-term effect of participating in EOP consisting of supervised interventions of different intensities. This study aimed to describe and compare self-reported physical activity in the long term among participants in 3 EOP modules of different intensities.

Methods:

A cross-sectional survey was conducted among 1152 former participants in EOP between July 2005 and May 2007 in 2 Danish counties. Physical activity was measured as number of days with a minimum 30 minutes of moderate/vigorous activity.

Results:

Seventy-five percent (n = 854) returned the questionnaire. Of these, 36% reported being physically active ≥ 5 days/week. Comparing leisure-time activities before EOP 29% was sedentary vs. 15% (P < 0 .01) after, moderate + hard leisure-time activities was 7% before vs. 19% after EOP (P < 0 .01). Time postintervention did not influence the numbers reporting to be physical active negatively.

Conclusions:

This study in community-dwelling adults with chronic diseases participating in EOP finds that approximately one-third reported being physically active in the long term postintervention, but no differences between the modalities were found.

Restricted access

Helene Pedersen, Atle Hole Saeterbakken, Markus Vagle, Marius Steiro Fimland and Vidar Andersen

Purpose: The Nordic hamstring exercise (NHE) has been shown to considerably reduce hamstring injuries among soccer players. However, as the load in the NHE is the person’s own bodyweight, it is a very heavy exercise and difficult to individualize. The flywheel inertial leg curl (FLC) could be an alternative since the eccentric overload is based on the amount of work produced in the concentric movement. Therefore, the primary aim of this study was to compare the activation in the hamstrings at long muscle lengths in the NHE and the FLC in amateur soccer players. Methods: Fifteen male amateur soccer players performed 5 repetitions in each exercise in a randomized and counterbalanced order. The concentric and eccentric movements were divided into lower and upper phases. Surface EMG was measured distally, proximally, and in the middle, at both muscles. Results: In the lower phase in the eccentric movement, there were no significant differences between the 2 exercises (P = .101–.826). In the lower concentric movement, the FLC led to higher activation in all parts of both the biceps femoris (31%–52%, P < .001) and the semitendinosus (20%–35%, P = .001–.023). Conclusion: Both exercises activated the hamstrings similarly at long muscle lengths during eccentric contractions (Nordic hamstring, nonsignificantly higher). However, when performing concentric contractions, the FLC induced higher activations. Therefore, the FLC could be a useful alternative to the NHE and particularly suitable for weaker athletes before progressing to NHE.