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[81], 'though': [82], 'reports': [83], 'that': [84, 97], 'it': [85], 'athletic': [87], 'performance': [88], 'will': [89], 'stimulate': [90], 'further': [91], 'studies.': [92], 'Subsets': [93], 'population': [96], 'benefit': [99], 'betaine': [101, 115, 120, 142, 150, 167], 'could': [103], 'be': [104], 'identified': [105], 'laboratory,': [108], 'particular': [110], 'those': [111], 'who': [112], 'excessively': [113], 'lose': [114], 'through': [116], 'urine.': [118], 'Plasma': [119, 134], 'highly': [122, 155], 'individual,': [123], 'women': [125], 'typically': [126, 137], '20–60': [127], 'μmol/L': [128], 'men': [131], '25–75': [132], 'μmol/L.': [133, 140], 'dimethylglycine': [135], '<': [138, 159], '10': [139], 'Urine': [141], 'excretion': [143], 'minimal,': [145], 'even': [146], 'following': [147], 'large': [149], 'dose.': [151], 'It': [152], 'constant,': [154], 'individual': [156], 'normally': [158], '35': [160], 'mmol/mole': [161], 'creatinine.': [162], 'The': [163], 'preferred': [164], 'method': [165], 'measurement': [168], 'LC-MS/MS,': [171], 'which': [172], 'rapid': [174], 'capable': [176], 'automation.': [178], 'Slower': [179], 'HPLC': [180], 'methods': [181], 'give': [182], 'comparable': [183], 'results.': [184], 'Proton': [185], 'NMR': [186], 'spectrometry': [187], 'another': [189], 'option': [190], 'caution': [192], 'needed': [194], 'avoid': [196], 'confusion': [197], 'trimethylamine-N-oxide.': [199]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2052716733', 'counts_by_year': [{'year': 2024, 'cited_by_count': 22}, {'year': 2023, 'cited_by_count': 24}, {'year': 2022, 'cited_by_count': 29}, {'year': 2021, 'cited_by_count': 42}, {'year': 2020, 'cited_by_count': 32}, {'year': 2019, 'cited_by_count': 36}, {'year': 2018, 'cited_by_count': 27}, {'year': 2017, 'cited_by_count': 47}, {'year': 2016, 'cited_by_count': 23}, {'year': 2015, 'cited_by_count': 33}, {'year': 2014, 'cited_by_count': 23}, {'year': 2013, 'cited_by_count': 24}, {'year': 2012, 'cited_by_count': 21}], 'updated_date': '2024-09-07T03:41:13.742339', 'created_date': '2016-06-24'}