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696 results on '"Bemben, Debra A."'

14. Sex-Specific Associations Between Bone-Loading Score and Adiposity Markers in Middle-Aged and Older Adults.

Author

Singh, Harshvardhan, Moore, Bethany A., Rathore, Roshita, Bemben, Michael G., and Bemben, Debra A.

Subjects
BIOMARKERS, STATURE, SKELETAL muscle, PHOTON absorptiometry, MULTIPLE regression analysis, AGE distribution, SEX distribution, QUESTIONNAIRES, BODY mass index, ADIPOSE tissues
Abstract

The authors examined sex-specific relationships between fat mass index (FMI), android/gynoid (A/G) fat ratio, relative skeletal muscle mass index, and Bone-Specific Physical Activity Questionnaire derived bone-loading scores (BLSs) in middle-aged and older adults (men, n = 27; women, n = 33; age = 55–75 years). The FMI, A/G fat ratio, and relative skeletal muscle mass index were estimated by dual-energy X-ray absorptiometry. The Bone-Specific Physical Activity Questionnaire was used to assess: (a) BLSpast (age 1 until 12 months before the study visit), (b) BLScurrent (last 12 months), and (c) BLStotal (average of [a] and [b]) scores. Separate multiple linear regression analysis of (a) age, FMI, and relative skeletal muscle mass index and (b) age, height, and A/G fat ratio versus BLS revealed that FMI and A/G fat ratio were negatively associated with BLSpast and BLStotal (p <.05) in women only. Adiposity and, specifically, central adiposity is negatively related to bone-loading physical activity in middle-aged and older women. [ABSTRACT FROM AUTHOR]

Published
2022
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32. Effects of Collagen Peptides on Recovery Following Eccentric Exercise in Resistance-Trained Males—A Pilot Study.

Author

Prowting, Joel L., Bemben, Debra, Black, Christopher D., Day, Eric A., and Campbell, Jason A.

Subjects
*RESISTANCE training, *COLLAGEN, *PILOT projects, *MUSCLE contraction, *SKELETAL muscle, *CONNECTIVE tissues, *CONVALESCENCE, *TIME, *MEN, *INGESTION, *PLACEBOS, *DIETARY supplements, *BODY movement, *JUMPING, *PEPTIDES, *METABOLISM
Abstract

The authors sought to determine whether consuming collagen peptides (CP) enhances musculoskeletal recovery of connective tissues following a damaging exercise bout. Resistance-trained males consumed 15 g/day of CP (n = 7) or placebo (n = 8), and after 7 days, maximal voluntary isometric contraction (MVIC), countermovement jump height, soreness, and collagen turnover were examined. Five sets of 20 drop jumps were performed and outcome measures were collected 24, 48, and 120 hr postexercise. Countermovement jump height was maintained in the CP group at 24 hr (PRE = 39.9 ± 8.8 cm vs. 24 hr = 37.9 ± 8.9 cm, p =.102), whereas the CP group experienced a significant decline at 24 hr (PRE = 40.4 ± 7.9 cm vs. 24 hr = 35.5 ± 6.4 cm, p =.001; d = 0.32). In both groups, muscle soreness was significantly higher than PRE at 24 hr (p =.001) and 48 hr (p =.018) but not at 120 hr (p >.05). MVIC in both legs showed a significant time effect (left: p =.007; right: p =.010) over the 5-day postexercise period. Neither collagen biomarker changed significantly at any time point. CP supplementation attenuated performance decline 24 hr following muscle damage. Acute consumption of CP may provide a performance benefit the day following a bout of damaging exercise in resistance-trained males. [ABSTRACT FROM AUTHOR]

Published
2021
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42. Decreased Postural Balance in Multiple Sclerosis Patients with Low Disability

Author

Fjeldstad, Cecilie, Pardo, Gabriel, and Bemben, Debra

Abstract

To evaluate balance in women with multiple sclerosis (MS) who have low disability and minimal clinical impairments as measured by the Expanded Disability Status Scale (EDSS), and compare them with healthy age-matched controls. Patients were aged between 18 and 64 years; 67 individuals with MS (mu = 44.0 plus or minus 1.2 years) and 45 healthy controls (mu = 40.4 plus or minus 2.4 years). All patients had an EDSS score of 3.5 or below. Both the groups underwent a series of balance measures using the NeuroCom Balance Master. The mean EDSS for the MS group was 1.8. For balance, there was a significant difference between the two groups, with the MS group performing worse on the modified clinical test for sensory integration of balance measures standing on a foam surface with eyes closed (P less than 0.01). A significant difference was also found for the unilateral stance with eyes closed and eyes open, and the tandem walk, with the MS group showing significantly more sway during those tests (P less than 0.01). The MS group did significantly worse when compared with the healthy age-matched controls on the balance measures, indicating greater postural instability despite the low disability measured by EDSS.

Published
2011
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