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  1. Article ; Online: Transference of outdoor gait-training to treadmill running biomechanics and strength measures: A randomized controlled trial.

    DeJong Lempke, Alexandra F / Stephens, Stephanie L / Thompson, Xavier D / Hart, Joseph M / Hryvniak, David J / Rodu, Jordan S / Hertel, Jay

    Journal of biomechanics

    2024  Volume 168, Page(s) 112095

    Abstract: Outdoor gait-training has been successful in improving pain and reducing contact time during outdoor running for runners with exercise-related lower leg pain (ERLLP). However, it is unclear if these adaptations translate to gold standard treadmill ... ...

    Abstract Outdoor gait-training has been successful in improving pain and reducing contact time during outdoor running for runners with exercise-related lower leg pain (ERLLP). However, it is unclear if these adaptations translate to gold standard treadmill running and clinical strength assessments. The study purpose was to assess the influence of a 4-week outdoor gait-training intervention with home exercises (FBHE) on treadmill running biomechanics and lower extremity strength compared to home exercises alone (HE) among runners with ERLLP. Seventeen runners with ERLLP were randomly allocated to FBHE and HE groups (FBHE: 3 M, 6F, 23 ± 4 years, 22.0 ± 4.6 kg/m
    Language English
    Publishing date 2024-04-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 218076-5
    ISSN 1873-2380 ; 0021-9290
    ISSN (online) 1873-2380
    ISSN 0021-9290
    DOI 10.1016/j.jbiomech.2024.112095
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 700: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
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    ab Jg. 2022: Lesesaal (EG)

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  2. Article ; Online: Prospective running assessments among division I cross-country athletes.

    DeJong Lempke, Alexandra F / Hart, Joseph M / Hryvniak, David J / Rodu, Jordan S / Hertel, Jay

    Physical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine

    2022  Volume 55, Page(s) 37–45

    Abstract: Objectives: To prospectively monitor biomechanics, session-rating of perceived exertion (sRPE), and wellness in a cohort of collegiate Division-1 cross-country athletes over the course of a single competitive season.: Design: Prospective cohort study. ...

    Abstract Objectives: To prospectively monitor biomechanics, session-rating of perceived exertion (sRPE), and wellness in a cohort of collegiate Division-1 cross-country athletes over the course of a single competitive season.
    Design: Prospective cohort study.
    Methods: Healthy Division-1 cross-country athletes (9 males, 13 females) were prospectively followed over a single competitive cross-country season. Wearable sensors were used to collect biomechanics twice per week, along with surveys to assess sRPE and wellness. Mixed model linear regressions were used to assess the relationship among biomechanical measures to sRPE, and to wellness z-scores.
    Results: Stride length, contact time, impact g, pace, weekly mileage, and running a meet in the day prior to the recorded run explained 25.4% of the variance in sRPE scores across the season (R
    Conclusions: There were several identified associations between gait biomechanics and sRPE, yet minimal associations with wellness measures. These findings suggest there are movement adaptations associated with perceived running intensity, however biomechanical measures alone do not lend additional insight into wellness measures.
    MeSH term(s) Athletes ; Cohort Studies ; Female ; Health Status ; Humans ; Male ; Physical Exertion ; Prospective Studies ; Surveys and Questionnaires
    Language English
    Publishing date 2022-02-11
    Publishing country England
    Document type Journal Article
    ZDB-ID 2008604-0
    ISSN 1873-1600 ; 1466-853X
    ISSN (online) 1873-1600
    ISSN 1466-853X
    DOI 10.1016/j.ptsp.2022.02.003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 5218: Show issues Location:
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  3. Article ; Online: Use of wearable sensors to identify biomechanical alterations in runners with Exercise-Related lower leg pain.

    DeJong Lempke, Alexandra F / Hart, Joseph M / Hryvniak, David J / Rodu, Jordan S / Hertel, Jay

    Journal of biomechanics

    2021  Volume 126, Page(s) 110646

    Abstract: Exercise-related lower leg pain (ERLLP) is one of the most prevalent running-related injuries, however little is known about injured runners' mechanics during outdoor running. Establishing biomechanical alterations among ERLLP runners would help guide ... ...

    Abstract Exercise-related lower leg pain (ERLLP) is one of the most prevalent running-related injuries, however little is known about injured runners' mechanics during outdoor running. Establishing biomechanical alterations among ERLLP runners would help guide clinical interventions. Therefore, we sought to a) identify defining biomechanical features among ERLLP runners compared to healthy runners during outdoor running, and b) identify biomechanical thresholds to generate objective gait-training recommendations. Thirty-two ERLLP (13 M, age: 21 ± 5 years, BMI: 22.69 ± 2.25 kg/m
    MeSH term(s) Adolescent ; Adult ; Biomechanical Phenomena ; Exercise ; Gait ; Humans ; Leg ; Pain ; Wearable Electronic Devices ; Young Adult
    Language English
    Publishing date 2021-07-23
    Publishing country United States
    Document type Journal Article
    ZDB-ID 218076-5
    ISSN 1873-2380 ; 0021-9290
    ISSN (online) 1873-2380
    ISSN 0021-9290
    DOI 10.1016/j.jbiomech.2021.110646
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 700: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
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    ab Jg. 2022: Lesesaal (EG)

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  4. Article ; Online: Intrinsic foot muscle size and quality in a single leg weight bearing position across foot posture types in individuals with Patellofemoral Pain compared to healthy.

    Baellow, Andrea / Jaffri, Abbis H / Hertel, Jay / Higgins, Michael J / Rangecroft, Cameron M / Hryvniak, David J / Saliba, Susan A

    Physical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine

    2022  Volume 54, Page(s) 58–64

    Abstract: Objective: To identify if any differences exist in IFM size and quality in single leg weight bearing position between healthy and PFP participants based on foot posture.: Design: Cross-sectional, matched case-comparison study SETTING: University ... ...

    Abstract Objective: To identify if any differences exist in IFM size and quality in single leg weight bearing position between healthy and PFP participants based on foot posture.
    Design: Cross-sectional, matched case-comparison study SETTING: University Laboratory Setting PARTICIPANTS: 35 PFP (age:20.46 ± 3.79yrs, mass:73.28 ± 26.58 kg, height:170.80 ± 11.91 cm) and 35 healthy (age:20.40 ± 3.16yrs, mass:64.76 ± 11.52 kg, height:169.55 ± 9.10 cm) participants METHODS: After measuring Foot Posture Index (FPI), ultrasound images (USI) of Abductor Hallucis (AH), Flexor Digitorum Brevis (FDB) and Quadratus Plantae (QP) were taken in a single limb weight bearing position. Cross-sectional area (CSA) and echogenicity were measured on the USI.
    Results: FPI was not different between groups (PFP:2.34 ± 3.76, Healthy:2.34 ± 3.10, 9 pronated and 26 non-pronated in both groups). AH CSA was smaller in PFP than healthy group (PFP:0.030 ± 0.01 cm (Smith et al., 2018)/kg, Healthy:0.042 ± 0.01 cm (Smith et al., 2018)/kg, P < 0.001) with a large effect (d = -1.20(-1.71, -0.69). There were no other significant group main effects or group-by-FP interactions in AH/FDB/QP CSA or echogenicity.
    Conclusion: AH CSA was smaller in PFP than healthy controls, but no difference in CSA or echogenicity of FDB/QP exist, as well as no difference in foot posture between groups. While single limb weight bearing, the PFP group presented with a smaller IFM which provides eccentric control of medial longitudinal arch, which may have implications up the chain during weight bearing functional tasks.
    MeSH term(s) Adolescent ; Adult ; Humans ; Leg ; Muscle, Skeletal ; Patellofemoral Pain Syndrome ; Posture ; Weight-Bearing ; Young Adult
    Language English
    Publishing date 2022-01-19
    Publishing country England
    Document type Journal Article
    ZDB-ID 2008604-0
    ISSN 1873-1600 ; 1466-853X
    ISSN (online) 1873-1600
    ISSN 1466-853X
    DOI 10.1016/j.ptsp.2022.01.002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 5218: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
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    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  5. Article ; Online: Erratum to "Intrinsic foot muscle size and quality in a single leg weight bearing position across foot posture types in individuals with Patellofemoral Pain compared to healthy" [Physical Therapy in Sport 54 (2022) 58-64].

    Baellow, Andrea / Jaffri, Abbis H / Hertel, Jay / Higgins, Michael J / Rangecroft, Cameron M / Hryvniak, David J / Saliba, Susan A

    Physical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine

    2022  Volume 55, Page(s) 316

    Language English
    Publishing date 2022-04-02
    Publishing country England
    Document type Published Erratum
    ZDB-ID 2008604-0
    ISSN 1873-1600 ; 1466-853X
    ISSN (online) 1873-1600
    ISSN 1466-853X
    DOI 10.1016/j.ptsp.2022.03.009
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

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    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
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  6. Article: Sensor-based gait training to reduce contact time for runners with exercise-related lower leg pain: a randomised controlled trial.

    DeJong Lempke, Alexandra F / Stephens, Stephanie L / Fish, Pamela N / Thompson, Xavier D / Hart, Joseph M / Hryvniak, David J / Rodu, Jordan S / Hertel, Jay

    BMJ open sport & exercise medicine

    2022  Volume 8, Issue 4, Page(s) e001293

    Abstract: Objectives: To assess the effects of a 4-week randomised controlled trial comparing an outdoor gait-training programme to reduce contact time in conjunction with home exercises (contact time gait-training feedback with home exercises (FBHE)) to home ... ...

    Abstract Objectives: To assess the effects of a 4-week randomised controlled trial comparing an outdoor gait-training programme to reduce contact time in conjunction with home exercises (contact time gait-training feedback with home exercises (FBHE)) to home exercises (HEs) alone for runners with exercise-related lower leg pain on sensor-derived biomechanics and patient-reported outcomes.
    Design: Randomised controlled trial.
    Setting: Laboratory and field-based study.
    Participants: 20 runners with exercise-related lower leg pain were randomly allocated into FBHE (4 male (M), 6 female (F), 23±4 years, 22.0±4.3 kg/m
    Interventions: Both groups completed eight sessions of HEs over 4 weeks. The FBHE group received vibrotactile feedback through wearable sensors to reduce contact time during outdoor running.
    Primary and secondary outcome measures: Patient-reported outcome measures (PROMs) and outdoor gait assessments were conducted for both groups at baseline and 4 weeks. PROMs were repeated at 6 weeks, and feedback retention was assessed at 6 weeks for the FBHE group. Repeated measures analyses of variance were used to assess the influence of group and timepoint on primary outcomes.
    Results: The FBHE group reported increased function and recovery on PROMs beyond the HE group at 6 weeks (p<0.001). There was a significant group by time interaction for Global Rating of Change (p=0.004) and contact time (p=0.002); the FBHE group reported greater subjective improvement and reduced contact time at 4 and 6 weeks compared with the HE group and compared with baseline. The FBHE group had increased cadence (mean difference: 7 steps/min, p=0.01) at 4 weeks during outdoor running compared with baseline.
    Conclusion: FBHE was more effective than HE alone for runners with exercise-related lower leg pain, manifested with improved PROMs, reduced contact time and increased cadence.
    Trial registration number: NCT04270565.
    Language English
    Publishing date 2022-11-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 2817580-3
    ISSN 2055-7647
    ISSN 2055-7647
    DOI 10.1136/bmjsem-2021-001293
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Resistance training improves femoral artery endothelial dysfunction in aged rats.

    Harris, M Brennan / Slack, Kristen N / Prestosa, David T / Hryvniak, David J

    European journal of applied physiology

    2009  Volume 108, Issue 3, Page(s) 533–540

    Abstract: Although endurance exercise improves age-associated endothelial dysfunction, few studies have examined the effects of resistance training and the potential molecular mechanisms involved in altering vascular reactivity with age. Young (9 months) and aged ( ...

    Abstract Although endurance exercise improves age-associated endothelial dysfunction, few studies have examined the effects of resistance training and the potential molecular mechanisms involved in altering vascular reactivity with age. Young (9 months) and aged (20 months) male, Fisher 344 rats were divided into four groups: Young Sedentary (YS, n = 14), Young Trained (YT, n = 10), Aged Sedentary (AS, n = 12), and Aged Trained (AT, n = 10). Resistance training consisted of climbing a 1 m wire ladder, at an 85 degrees angle, 3 days/week for 6 weeks with increasing weight added to the tail. Endothelial function in femoral arteries was determined by constructing acetylcholine dose-response curves on a wire myograph. Femoral artery phospho-Ser1179-eNOS, eNOS and Hsp90 expression were evaluated by Western blot. Acetylcholine-induced vasorelaxation was significantly (P < 0.05) impaired in AS compared to YS and YT but not AT compared to YS and YT. Phospho-Ser1179-eNOS and eNOS were elevated (P < 0.05) in aged animals but not changed with resistance training. Resistance training increased Hsp90 levels in both young and old animals. Therefore, resistance training improves age-associated endothelial dysfunction in femoral arteries without changes in eNOS phosphorylation and expression. Increased Hsp90 expression, a regulator of eNOS activity and coupling, suggests a potential mechanism for this improvement.
    MeSH term(s) Acetylcholine/pharmacology ; Aging/physiology ; Animals ; Endothelium, Vascular/drug effects ; Endothelium, Vascular/metabolism ; Endothelium, Vascular/physiopathology ; Femoral Artery/drug effects ; Femoral Artery/metabolism ; Femoral Artery/physiopathology ; HSP90 Heat-Shock Proteins/metabolism ; Male ; Models, Animal ; Nitric Oxide/metabolism ; Nitric Oxide Synthase Type III/metabolism ; Physical Conditioning, Animal/physiology ; Rats ; Rats, Inbred F344 ; Resistance Training ; Vasodilator Agents/pharmacology
    Chemical Substances HSP90 Heat-Shock Proteins ; Vasodilator Agents ; Nitric Oxide (31C4KY9ESH) ; Nitric Oxide Synthase Type III (EC 1.14.13.39) ; Acetylcholine (N9YNS0M02X)
    Language English
    Publishing date 2009-10-27
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 124793-1
    ISSN 1439-6327 ; 1432-1025 ; 0301-5548 ; 1439-6319
    ISSN (online) 1439-6327 ; 1432-1025
    ISSN 0301-5548 ; 1439-6319
    DOI 10.1007/s00421-009-1250-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Uc I Zs.195: Show issues Location:
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